reducing the cobalt content constitutes a substantial contribution to reduced GHG emissions from the
manufacturing of cathode materials and LIBs.
くさび■Magnetic materials for motors 楔 (development technology)
Global Research & Innovative Technology Center
Power Electronics Materials Business Unit, Advanced Components & Materials Division
It is said that motors consume nearly 50% of the global supply of electric power, and as such, improving
the efficiency of this mechanism is one of the most overriding issues of energy-conserving and CO2
emissions reducing technologies. Against this background, we have developed new high-performancemagnetic slot wedges. This represents the technology that is often used to increase motor efficiency,
specifically by improving the magnetic flux distribution within the motor. With previous products, however,
the improvement effect was limited due to the inadequate density of magnetic particles and magnetic
permeability. In comparison, our recent development technology, an application of our proprietary powder
metallurgy technique, provides a higher density of magnetic particles, and achieves permeability that isabout double the level of the previous products. A computer simulation suggests that use of the new highpermeability magnetic slot wedges is expected to increase the motor efficiency by about 0.9% compared
to no technology of this kind being used and about 0.3% compared to use of previous products. We plan
to mass-produce this magnetic slot wedge technology, looking to contribute to a low-carbon society.

Simulation conditions
3.7kW 4P
200V 50Hz
Rectangular-wave
input

Magnetic slot wedges(external view)

Comparison of magnetic properties

3. Environmental Consideration in Manufacturing
This is a graphical representation of the balance of materials in manufacturing processes at the Hitachi
Metals Group for fiscal 2021.
The Hitachi Metals Group is promoting the reduction of the environmental burden in two directions:
reducing the volume of input through the efficient use of resources and energy, and reducing the volume
of output by controlling atmospheric releases and wastewater discharges, reducing and recycling waste,
and so on.

59
Hitachi Metals Group CSR Detailed Activity Report 2022

(1) Material Balance
The Hitachi Metals Group’s Material Balance for Fiscal 2021 (Global)

Input of Primary Materials
Total: 2,615 kt･New materials: 549 kt
･Recycled materials: 2,066 kt

Input of Energy
1,011,000 kl(crude oil equivalent)

Input of Water Resources
11,602,000 m3

Products
Specialty steel
Magnetic Materials andApplications
Automotive casting products
Wires, Cables, and Related
Products

Reuse

RecycleHitachi Metals Group

Recycling volume
615 ktFinal disposedvolumeTransfer emissions(waste, etc.)

Released to the Atmosphere

Released into Water

Waste Volume: 824 kt
(PRTR Substances*volume transferred
Volume transferred: 623 t)CO2: 2,216 kt
SOx：189t
NOx：489t
PRTR Substances*: 59 t

Total volume ofwastewater: 11,309,000 m3
BOD：57t
COD：118t
PRTR Substances*: 0.3 t

180 kt* PRTR emission quantities are totals of those released
by domestic companies in the Hitachi Metals Group(2) Climate Change Prevention
The Hitachi Metals Group is a materials manufacturer and uses significant amounts of energy in its
manufacturing processes. For this reason, the Group positions the prevention of climate change as amanagement priority. The Group has established medium- to long-term targets and is now working onenergy conservation measures to reduce its energy consumption rate and CO 2 emissions.
60
Hitachi Metals Group CSR Detailed Activity Report 2022

(a) Addressing Climate Change

1. Disclosure in accordance with TCFD Recommendations
As countries around the world intensify their efforts to address climate change in accordance with theParis Agreement, the Japanese government announced in October 2020 its policy goal of reducing
emissions of greenhouse gases, as typified by carbon dioxide (CO 2), to virtually zero by 2050.
Accordingly, companies are expected to be more proactive than ever in their efforts to transition to a
decarbonized society.
Hitachi Metals Group considers the impact of climate change on its business as one of our mostimportant management issues, and we believe that enhanced disclosure of climate change-related
information is a key factor in building a relationship of trust with our stakeholders. Accordingly, in June
2021, we registered our support for the TCFD*

Recommendations. We will continue to enhance ourdisclosure of information on the impact of climate change on our business activities in accordance with
the TCFD Recommendations.

*TCFD (Task Force on Climate-related Financial Disclosures):
Created in 2015 by the Financial Stability Board (FSB) in response to the related request from the G20 summit
meeting. In June 2017, the TCFD published the final recommendations, specifying items for business and otherorganizations to deal with when disclosing information on climate-related risks and opportunities.

2. Indicators and Targets
The Hitachi Metals Group has set targets for reducing CO2 emissions* as shown in the illustration
below. In promoting carbon neutrality, we will implement various measures, such as process
improvement particularly through facility investment, fuel conversion for melting and heating
furnaces and other equipment, technology development for expanding usage of carbon-free fuels,
and introducing renewable energy in addition to continuing with previous energy-conserving
activities.
CO2 emissions reduction targets
2,779 thousand t-CO2
Reduce by 38%
from FY2015

FY2015(Base year)

FY2030(Target)Achieve

net zero

FY2030(Target)*Scope 1: direct CO2 emissions by the Company
Scope 2: indirect emissions associated with the use of electricity, heat, and steam supplied by other companies(absolute value)
61
Hitachi Metals Group CSR Detailed Activity Report 2022

Actual achievements for Scopes 1 and 2 (1000t-CO2)

Item

FY2019FY2020

FY2021

Scope1

927

777

876

Scope2

1,392

1,218

1,340

Scope1+Scope2

2,319

1,995

2,216

*Executive Compensation
Executive compensation in the Hitachi Metals Group is determined on the basis of the achievementof annual targets. Starting in fiscal 2022, the extent to which the CO2 emissions reduction targets
have been achieved will be added to the index as an evaluation item for our climate change
response.
*Internal carbon priceTo promote CO2 emissions reduction, we have added the concept of “internal carbon pricing” toour internal regulations related to capital investment. In detail, we set a carbon price (8,000 yen/t
CO2) based on the total amount of CO2 emissions after capital investment, and the effect of theCO2 reduction of the capital investment is calculated as profit. (October 2021)
3. Strategy (Scenario Analysis)

The Hitachi Metals Group has begun “scenario analysis” to clarify the risks andopportunities posed by future climate change and to develop business strategies to reducerisks and expand opportunities. While we recognize that scenario analysis should cover
the entire group, including the supply chain, in fiscal year 2021, we limited our analysis to alimited number of scenarios and scope of coverage. In fiscal year 2022, we plan tocomplete the analysis regarding domestic business, andfrom fiscal year 2023 onward, we will promote scenario analysis including overseas
operations.
• Scenario-analysis Process

Scenario analysis—consisting of the four steps shown in Figure 1—aims to assess (i)financial and business impacts under different scenarios and (ii) resilience of the Hitachi
Metals Group strategy in regard to climate-related risks and opportunities.
• Assumptions for scenario analysis
Scenario: Refer to “Below-2°C scenario” for risks and opportunities excluding physical risks, andrefer to “4°C scenario” for physical risks.
Target businesses: (FY2021) Advanced Metals Division (domestic sites)(FY2022) Advanced Components and Materials Division (domestic sites);
Advanced metals Division (domestic sites)
Target year:

Impact as of 2030
62
Hitachi Metals Group CSR Detailed Activity Report 2022

・ Reference scenario
Classification

Less-than 2°C
scenario

4°C scenario

Main reference scenario
・IEA World Energy Outlook 2020. Sustainable Development
Scenario
・IPCC RCP2.6
・IEA World Energy Outlook 2020. Stated Policy Scenario
・IPCC RCP8.5

・Steps of scenario analysis

The following table summarizes the results of examinations on risks and opportunities
posed by climate change.
■ Business and financial impacts and responses under the assumption of the year 2030
(Advanced Metals Division [domestic sites])
Classification

Type

Risk Transition Policy/regulations

Content

Increased production
and operating costs
owing to stricter
regulations, such as
the introduction ofcarbon pricing (CP),which includes carbon
taxes, taxes on fueland energy
consumption, andemissions trading.

Business/financial
impactOur response

MediumCurrently, we are working to
reduce CO2 emissions bypromoting various energy-saving
measures (e.g., LED lighting andintroduction of or switch to highefficiency equipment) andactivities to improve productivity.
From now onwards, we will
actively promote fuel conversion
and the introduction of renewableenergy (i.e., installation of solar
panels) so as to achieve our CO2
reduction target for 2030.

63
Hitachi Metals Group CSR Detailed Activity Report 2022

Higher procurement
costs for raw materials(including rare metals
and auxiliary materials
such as directcomplementarymaterials) due tostricter CP and otherregulations.

Technology

Increased operating
costs associated with
the introduction of
manufacturing
processes (based onelectrification andalternative fuels) tomeet decarbonization
requirements.
Decreased sales of
peripheral components
of internal combustion
engines owing to the
expansion of xEVs.

MarketDecreased sales due
to changes incustomer procurement
standards (RE100 andother compliancerequirements) inaccordance withdecarbonization.
Increased costs ofdeveloping new
products for adecarbonized society.

Increasedprocurement risk due
to increased demand
for raw materials.

Reputation

Decreased sales due
to lower customer
evaluations resulting
from delays in thedevelopment andlaunch ofenvironmentally

Medium

As for principle raw materials, wewill work to strengthen surcharges(price sliding-scale system) andconsider and implement plans tofind new suppliers. From theperspective of life-cycle
assessment (LCA), we will
increase the utilization ratio ofscrap generating low CO2
emissions and find new suppliers.

MediumWhen introducing new
manufacturing processes, we will
examine equipment specifications
with the aim of reducing its impact
on operating costs.

Medium

As for capturing demand forcomponents of automotive
internal combustion engines, wewill target the commercial vehicle
and agricultural/construction
equipment fields.

Small

As for reducing CO2 emissions
from manufacturing processes,
we will continue to promote both
energy conservation andrenewable energy, and we will
focus on how to respond to
customer requests for
decarbonization.

Small

We will develop environmentallyconscious products and launchthem onto the market sequentiallywhile not being restricted to ourconventional business areas.

Small

We will develop processes thatutilize overseas scrap alloys andlow-grade raw materials as wellas processes for reducing the useof rare metals.

Medium

We will strengthen cooperation
between sales departments andresearch and development
departments with the aim ofdeveloping environmentallyconscious products, and address
the issue as a company-wide top
priority.
64

Hitachi Metals Group CSR Detailed Activity Report 2022

conscious products
onto the market.
Orders and sales
decreased as a resultof delays in delivery
owing to operations
suspended due toabnormal weatherinduced natural
disasters.
PhysicalriskClassification

Large

We will systematically improve
our production systems inanticipation of extreme weather
events. We will expand the BCP
system and refine the action
manual for emergencies.

Increased businesscosts due to rising
insurance costs

Small

In areas where disasters such as
tidal waves and floods are
anticipated based on the local
history of disasters, we will
systematically implement disaster
preparedness measures such as
relocation of factories and productwarehouses, protection of
production lines, etc.

Content

Business/financial
impactOur response

MediumTo achieve the 2030 CO2emissions reduction target, we
will promote various energysaving measures (e.g., LED
lighting and introduction of or
switch to high-efficiency
equipment) and productivityimprovement measures while
promoting fuel conversion andintroduction of renewable energy(i.e., installation of solar panels)
in a proactive manner. Naturally,
we will publicize our efforts andachievements.

Medium

We will actively promote CO2
reduction by introducing
renewable energy and switching
to carbon-neutral fuels.

Large

We will receive new orders andincrease market share of target
products by shortening thedevelopment lead time andreducing the costs ofenvironmentally conscious
products. We will continue to

Acute andchronic

Type

Resource
efficiency

Sales increased byraising product value
through efficient
production and effective
use of materials andenergy.

Source ofenergySales increased
through an
improvement in thecustomer’s evaluation
for supplier selection
by working on
decarbonization.

Products/Servi
ces

Sales increased bydeveloping andlaunchingenvironmentallyconscious products
onto the market.

Opportunity

65
Hitachi Metals Group CSR Detailed Activity Report 2022

expand sales of environmentallyconscious products, which are
expected to be in more demandin the future.
Examples:・Mold materials that provide
longer service life
・Materials for various industrial
machinery, undercarriage
parts, and exhaust-gas filtersthat contribute to improved fuelefficiency and reduced
emissions by cars
・Aerospace products that are
expected to improve the fuelefficiency of airplanes
・Battery materials (cladproducts) and powersemiconductor materials foruse in batteries and otherproducts
・Mass-flow controllers thatenable semiconductor
manufacturing equipment tosave energy

MarketSales increased byexpanding sales ofenvironmentallyconscious products
into new global
markets in response toincreased demand.

Sales increased byexpanding into the xEVmarket.

MediumAs decarbonization progresses,
products are expected to become
smaller, more powerful, andlighter; accordingly, we willdevelop new applications withvarious alloys that can takeadvantage of different material
properties.

MediumMany of our products, including
clad metals, are used in lithiumion rechargeable batteries, forwhich demand is increasing withthe expanding xEV market, so we
expect sales to increase.

Business and financial impacts and responses under the assumption of the year 2030 (Advanced
Components & Materials Division [domestic sites])
Classification

Risk

Type

Content

Increased production
and operating costs
owing to stricter
Transition Policy/regulations regulations, such as
the introduction ofcarbon pricing (CP),which includes carbon

Business/financial
impactOur response

MediumCurrently, we are working to
reduce CO2 emissions bypromoting various energy-saving
measures (e.g., LED lighting andintroduction of or switch to highefficiency equipment) andactivities to improve productivity.
66

Hitachi Metals Group CSR Detailed Activity Report 2022

taxes, taxes on fueland energy
consumption, andemissions trading.

From now onwards, we will
actively promote fuel conversion,purchase of renewable energy,
and introduction of related
equipment (i.e., installation ofsolar panels) so as to achieve our
CO2 reduction target for 2030.

Higher procurement
costs for raw materials(including rare metals
and auxiliary materials
such as directcomplementarymaterials) due tostricter CP and otherregulations.

Technology

Increased operating
costs associated withfacility investment for
introducing
manufacturing
processes (based onelectrification andalternative fuels) tomeet decarbonization
requirements.
Sales decreased due tolowered prices and lostorders as a result ofintensifying competition
with xEV suppliers.

MarketSales decreased due tooperations reduced asa result of rising copper
demand causing tightsupply of mainmaterials.
Sales decreased as aresult of existingproducts failing to
respond to
decarbonation
requirements (RE100,etc.) in a timely manner
or losing newmarketingopportunities.

Large

As for principle raw materials, wewill work to strengthen
surcharges and consider andimplement plans to find new
suppliers. From the perspectiveof life-cycle assessment, we will
increase the utilization ratio ofscrap generating low CO2
emissions, and develop andmarket materials with low heavyrare earth content in a bid to
reduce the usage amount andprocurement costs of suchelements in the magnet business.

Small

When introducing new
manufacturing processes, we will
examine equipment
specifications, such as
introducing the latest energysaving technologies, with the aimof reducing its impact on
operating costs. Also, we willpass increased costs on to sales
prices.

Small

We will promote cost reductionplans, such as introducing highefficiency equipment, increasing
productivity, and facilitating local
procurement of parts.

Medium

We will work to increase
productivity to reduce copper
usage and find new suppliers todiversify procurement channels.

Medium

We will increase the renewableenergy usage rate by promoting
the introduction of renewableenergy and choosing electricity
companies that supply power witha higher percentage of renewableenergy sources.

67
Hitachi Metals Group CSR Detailed Activity Report 2022

Physical
riskClassification

Acute andchronic

Orders and sales
decreased owing tooperations suspended
as a result of abnormal
weather-induced
natural disasters.

Medium

We will systematically improve
our production systems inanticipation of extreme weather
events. We will expand the BCP
system and refine the action
manual for emergencies.

Type

Content

Business/financial
impactOur response

Small

To achieve the 2030 CO2emissions reduction target, we
will promote various energysaving measures (e.g., LED
lighting and introduction of or
switch to high-efficiency
equipment) and productivityimprovement measures while
promoting fuel conversion andintroduction of renewable energy(i.e., installation of solar panels)
in a proactive manner.

Small

We will work to increase
productivity to reduce electricity
usage and raise the renewableenergy usage rate.

Sales increased bydeveloping andlaunchingenvironmentallyconscious products
onto the market.

Large

We will develop and expand
sales of environmentallyconscious products that
contribute to a low-carbon
society.
■ Products that contribute toimproving the efficiency ofxEVs・Motor-related materials (rareearth magnets, ferrite magnets,
magnet wires, power feeders)・Power semiconductor-relatedmaterials (silicon nitride, siliconcarbon)・Automotive electronic
components, such as
harnesses■ Amorphous alloys that
contribute to the higher
efficiency of transformers

Increased sales of lowheavy rare earth

Large

Targeting customers considering
a switch from magnets with a

Resource
efficiency

Sales increased byraising product value
through efficient
production andeffective use ofmaterials and energy.

Source ofenergySales increased
through an
improvement in thecustomer’s evaluation
for supplier selection
by working on
decarbonization.

Opportunity

Products/Serv
ices

Market68
Hitachi Metals Group CSR Detailed Activity Report 2022

magnets and ferrite
magnets against thebackground of rising
prices of heavy rareearth and increasing
risks of procurement.

high heavy rare earth content, we
will develop and market lowheavy rare earth magnets andhigh-performance ferrite
magnets, aiming to expand sales.

xEV: A generic term for electric vehicles (EVs), hybrid electric vehicles (HEVs), and plug-in hybrid electric vehicles(PHEVs)RE100: Global corporate initiative of businesses committed to 100% renewable energy

Definition for assessment of business/financial impact (*1 Net sales of target businesses)•

Large: cost or effect equal to or greater than 5% of sales *1•

Medium: cost or effect equal to at least 1% but less than 5% of sales*1•

Small: cost or effect equal to less than 1% of sales* 1

As described above, the scenario analysis of the business areas of Advanced Components andMaterials Division (domestic sites), in addition to that for the Advanced Metals Division (domestic sites)with the results disclosed on May 26, 2022, verified the response to each risk and opportunity withrespect to the strategy for each business, and the analysis results confirmed that our strategy is resilient.

(b) Vision for Preventing Climate Change
The following presents the targets of the Hitachi Metals Group’s three-year plan covering fiscal 2019 to
fiscal 2021 and the results of fiscal 2021.

● Targets for Fiscal 2021 in the Medium-Term Environmental Action Plan
Reduction of per unit of CO2 emitted*1 in manufacturing processes by 7% from that in FY2010(global)*1. (CO2 emissions) / (amount of activity*2)*2: A figure representing the scale of business activities such as sales or production weight● Fiscal 2021 Results
Improvement ratio of CO2 emissions per unit: 2.2%(c) Trends in Energy Consumption and Sales Energy Consumption Ratio
The Hitachi Metals Group’s global energy consumption in fiscal 2021 was equivalent to 1,012 thousand
kl of crude oil, up 97 thousand kl (10.6%) from fiscal 2020. This was down 23 thousand kl (2.3%) fromfiscal 2019 before the outbreak of the COVID-19 pandemic.
In fiscal 2021, production recovered from a fall posted in the previous year, recording a revenue increaseof 23.8% from fiscal 2020 and 7.0% from fiscal 2019. On the other hand, the basic unit for revenue was
1.073, down about 10.7% from fiscal 2020, and down 8.6% from fiscal 2019. Major factors contributing
to the improved per unit value were various energy-saving measures (improved productivity, more
efficient operation of facilities, introduction of high-efficiency equipment, and reduced consumption offuels particularly by using alternative coke) and facility utilization increased by expanded production.
To reduce energy consumption even further, we will continue to pursue energy-saving activities linked
to monozukuri (manufacturing). The emphasis is on eliminating excess processes, improving efficiency,
boosting the yield rate, curtailing fixed energy, installing energy-saving equipment, fuel conversion andintroducing renewable energy.
69
Hitachi Metals Group CSR Detailed Activity Report 2022

Trends in Energy Consumption and Sales Energy Consumption Ratio

1.135

1.074

Energy consumption (kl)

123

122

129

1.084

1.202

1.2

1.073

1.174

137

1.0

135

138
115

800

0.8

490

473

489

465

413

398
371

600

0.6

400

200

0.4

480

482

504

508

Energy consumption ratio(kl/million yen)

1200

1000

Energy consumption ratio

1.183

アジア
Asia

487

429

476

0

0.2

0.0
2015

2016

2017

2018
FY

2019

2020

2021

Americas
米州
Japan
日本
Revenue
売上収益
base unit
原単位(d) Trends in CO2 Emissions from Energy Usage and CO2 Emissions per Unit
The Hitachi Metals Group’s global CO2 emissions from energy usage in fiscal 2021 were 2,216 thousand
tons, up 221 thousand tons (11.1%) from fiscal 2020. This was down 103 thousand tons (4.4%) from fiscal
2019 before the outbreak of the COVID-19 pandemic.
In fiscal 2021, production recovered from a fall posted in the previous year, recording a revenue increaseof 23.8% from fiscal 2020 and 7.0% from fiscal 2019. On the other hand, the basic unit for revenue was
2.351, down about 10.3% from fiscal 2020, and down 10.6% from fiscal 2019. Major factors contributing
to the improved per unit value were various energy-saving measures (improved productivity, more efficient
operation of facilities, introduction of high-efficiency equipment, and reduced consumption of fuelsparticularly by using alternative coke), facility utilization increased by expanded production, andintroduction of carbon-free natural gas.
Going forward, we will step up our efforts to reduce CO 2 emissions, setting medium- to long-term targets
aimed at achieving carbon neutrality in 2050, with a focus on introducing renewable energy while
continuing with our energy-saving activities.

Trends in CO2 Emissions from Energy Usage and CO2 Emissions per Unit
70
Hitachi Metals Group CSR Detailed Activity Report 2022

2.731CO2 emissions per unit

2.811
2.935

2.570

CO2 emissions (1000t-CO2)

2,000

2.619

2.631

2,500

1,711

1,657

1,724

3.0

2.351 2.5

2.0

1,582
1,392

1,340

1,500

1.5

1,218
1,000

500

1.0

1,068

1,015

1,054

1,048

926

777

876

2020

2021

0

0.5

CO2 emissions per unit (t-CO2/million yen)

3,000

Scope 2

Scope 1

Revenue
売上収益
base unit
原単位

0.0

2015

2016

2017

2018

2019

FY
Note: Approximately 60% of the Hitachi Metals Group’s CO2 emissions are attributable to Scope 2 (electricity). Within Scope 1(fossil fuels), the largest emitter is coke, followed by city gas.
We use CO2 emission factors of electric power on a regional basis: in Japan, emission factor for each electric powercompany published by the Ministry of the Environment; and in the Americas and Asian countries, the country-specificconversion factor issued in 2021 by the International Energy Agency (IEA).

(3) Effective Use of Resources(a) Vision for Effective Use of Resources
The Hitachi Metals Group is using in-house reuse and recycling by way of intermediate processing tocreate a resource-efficient society and achieve the “thorough circulation of resources throughout the life
cycle of goods and services,” as stated in the 4th Fundamental Plan for Establishing a Sound MaterialCycle Society.

● Targets for Fiscal 2021 in the Medium-Term Environmental Action Plan
• Reduction of waste generation per production unit*1 by at least 14% compared to fiscal 2010
(global)• Waste landfill rate: 12% or less (global)*1. (Waste and valuables generation) / (amount of activity*2)*2: A figure representing the scale of business activities such as sales or production weight● Fiscal 2021 Results
Rate of reduction of waste generation per production unit: 18.9%
Waste landfill rate: 11.7%
We are working to reduce waste/valuables generation (“waste”), which is measured using the indicatorof generation of waste per production unit. We are promoting efforts to reduce waste output, focusing on
process innovation such as kaizen (improvement) of production processes. Furthermore, in response to71
Hitachi Metals Group CSR Detailed Activity Report 2022

tight conditions in the final disposal site and requirements to respond to social demands regarding theeffective use of resources,
we are working to improve the waste landfill rate to attain the targets set in fiscal 2019, chiefly bypromoting recycling and reducing the final disposal volume.

(b) Results of Waste Management
Total waste generated by the Hitachi Metals Group in fiscal 2021 reached about 824 thousand tons, up
63 thousand tons from 761 thousand tons in the previous fiscal year.
We achieved a 18.9% reduction from the base year in the generation of waste per production unit, amanagement indicator in our Environmental Action Plan, and exceeded our target. This was attributable
to the launch of a sand recycling system at the U.S.-based Waupaca Foundry, Inc.
The amount of recycled resources was 138 thousand tons in Japan, 432 thousand tons in the Americas,
and 45 thousand tons in Asia (total: 615 thousand tons). The final disposal amount was 15 thousand
tons in Japan, 150 thousand tons in the Americas, and 15 thousand tons in Asia (total: 180 thousandtons). (The final disposal amount includes the amount of household waste, hazardous waste, and waste
deposited on our premises.) The amount of recycled plastics waste was 0.5 thousand tons (0.2 thousand
tons on a non-consolidated basis), and the recycling rate was 82.8% (82.7% on a non-consolidated
basis). (Targets planned to be considered based on the results of fiscal 2022.)
There were many challenges to recycling waste in Japan, but thanks to recycling activities in theAmericas and other factors, the waste landfill rate in fiscal 2021 was 11.7%, compared to the target
value of 12%. Going forward, we plan to raise the bar overall through activities stepped up at overseas
sites, where we believe that many recyclable items remain.

Also of note, we achieved zero emission status*1 at 14 business offices.
*1. From fiscal 2011, deemed to be a final disposal volume of less than 0.5% of total emissions.

Trends in Recycling Volume, Final Disposal Volume, and Recycling Ratio

72
Hitachi Metals Group CSR Detailed Activity Report 2022

900

100%

700

66

63

64

71

90%

61

600
78.1%

45

78.2%

77.0%

78.8% 43

500

504

484

80%
77.4%

76.7%

73.8%
519

400
496

429

Recycling ratio (％)

Recycling volume and final disposal volume (1,000t)

800

70%

432
404

300

Japan
日本

Americas
米州

200

60%
261

100

194

175

221

197 215

178

Asia
アジア

218

215
151

173
122

138

180
Final disposed volume
最終処分量

0

50%
2015

2016

2017

2018

2019

2020

2021
再資源化率
Recycling ratio

FY

Breakdown of Waste Volume(Hitachi Metals Group)
Waste
alkali
0.5%

Waste plastic
0.7%

Waste oil
1.1%
Sludge1.7%

Wood Waste
waste paper
0.5% 0.4%

Other
0.5%

Breakdown of Final Disposal Volume(Hitachi Metals Group)
Waste oil Other
BreakdownRubbleof Final
Disposed
0.5% 1.6%
2.4%
Glass
Volume
4.6%
汚泥
2.4%

Glass
1.8%

Rubble
4.9%

Dust
6.2%

Scrap
9.9%

Dust
26.5%

Total released
824 thousand tons

Final disposedvolume180 thousand tons

Slag
61.9%

Slag
71.7%

Note: The final disposal amount includes household waste, hazardous waste, and in-house landfill.

(c) Reduction of Water Usage73
Hitachi Metals Group CSR Detailed Activity Report 2022

● Targets for Fiscal 2021 in the Medium-Term Environmental Action Plan
• Reduction of water usage per production unit*1 by at least 26% compared to fiscal 2010
(global)*1. (Water usage) / (amount of activity*2)*2. A figure representing the scale of business activities such as sales or production weight● Fiscal 2021 Results
Improvement rate of water usage per production unit: 29.9%
Since fiscal 2016, we have been working to achieve the targets for effective use of water resources set
in the Environmental Action Plan through global efforts. Our water usage amounted to 11,602 thousand
m3, an increase of 253 thousand m3 from fiscal 2020. We reduced water usage per production unit by
29.9% compared to the base year, achieving our target. Major factors contributing to achieved per unit
value targets were: recovery of production volume from the decline caused by the spread of COVID-19;
and reduction of water usage through measures such as installing water recycling systems in equipmentwith less impact on quality, adopting functions to reduce water discharge, and repair of water leakage.
We plan to work on raising water use efficiency, in order to further reduce water usage.

18,00035%
30%

16,00030%

28%
14,000

24%
1,445

22%

1,619
1,369

Water usage (km3)

12,000

25%

1,163

2,779
2,243

2,171

10,000

1,866
15%

988

1,092

1,396

1,516

12%

8,000

20%

15%

6,000
10,327

9,986

9,850

4,000

9,156

10%
8,965

8,993
5%

2,000
0

0%
2016

2017

2018

2019

FY

2020

2021

Improvement rate of water usage per production unit (%)

Trends in Improvement Rate of Water Usage per Production Unit

Asia
アジア
Americas
米州
Japan
日本
Improvement

原単位
rate perproduction unit
改善率74
Hitachi Metals Group CSR Detailed Activity Report 2022

(4) Chemical Substance Management(a) Reduction of Substances of Environmental Concern
Of the substances handled by domestic companies in the Hitachi Metals Group that are subject to the
PRTR Law,*1 six materials which are nickel (including compounds), chromium, molybdenum,
manganese, phthalic acid (2-ethylhexyl), and cobalt are essential raw materials used in Hitachi Metals’
products. These six substances constitute 96% of regulated materials and 80% of the total amounttransferred.
Of the total amount released into the atmosphere, 46% is attributable to toluene and xylene, which arevolatile organic compounds (VOCs).
*1. Law Concerning Reporting, etc., of Releases to the Environment of Specific Chemical Substances and Promoting
Improvements in Their Management

The State of PRTR Substance Handling in Fiscal 2021 (Domestic Group)
Fig. Breakdown of Volume

Bis (2-ethylhexyl)
phthalate
2%

HandledManganeseand its
compounds
1%

Other
4%

Cobalt and its compounds
2%
Nickel compounds
3%

Molybdenum
and its
compounds 4%
Chromiumand chromium(III)
compounds
23%

Volumehandled52,884t

Nickel61%

Fig. Volumes Consumed, Released, andTransferred, and Other Breakdowns

Recycled 4.4%
Removalprocess 2.1%

Total released
0.3%
Total
transferred
1.2%

Volumehandled52,884t

Comsumed
92.0%

75
Hitachi Metals Group CSR Detailed Activity Report 2022

Fig. Breakdown of Release (atmosphere, water)
1,3,5Tromethylben
zene 2%

Total of othersubstances
2%

Cresol2%

N,Ndimethylacetamide
3%
1,2,4Trimethylbenzene
5%Toluene27%
Phenol8%

Total released
Triethylamine
9%59tEthylbenzene
9%

Xylene20%

N,Ndimethylformamide

13%

Fig. Breakdown of Transfer (waste, sewerage)
Manganeseand its
compounds
1%

Xylene2%

Hydrogen fluoride
and its watersoluble salts 1%

Phenol
2%

Other
4%

Bis (2-ethylhexyl)
phthalate2%
Cobalt and its
compounds 2%

Organoboron
compounds
6%

N, Ndimethylformamide
6%
Nichkel compounds
6%

Molybdenum andits compounds
10%

Total
transferred:
623t

Chromium andchromium (III)compounds
47%

Nichkel11%

76
Hitachi Metals Group CSR Detailed Activity Report 2022

Fiscal 2021: PRTR Data (in Japan) (Unit: Tons/year)
NumberName

31 Antimony and its compounds

CAS Number

Volume released
Volume transferred
Volumehandled Atmosphere Public water system Soil Landfill Total Sewerage Waste Total

-

95

0.0

0.0

0.0

0.0

0.0

0.0

1.4

1.4

37 4,4’-Isopropylidenediphenol (alias: bisphenol A)

80-05-7

2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

42 2-imidazolidinone

96-45-7

1

0.0

0.0

0.0

0.0

0.0

0.0

0.1

0.1

-

2

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

53 Ethylbenzene

100-41-4

32

5.1

0.0

0.0

0.0

5.1

0.0

4.6

4.6

71 Ferric chloride

7705-08-0

378

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

80 Xylene

1330-20-7

93

11.5

0.0

0.0

0.0

11.5

0.0

9.4

9.4

-

22

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

1319-77-3

221

1.3

0.0

0.0

0.0

1.3

0.0

5.2

5.2

-

12,161

0.0

0.1

0.0

55.5

55.5

0.0

292.2

292.2

132 Cobalt and its compounds

-

1,278

0.0

0.0

0.0

0.0

0.0

1.4

13.0

14.4

188 N,N-dicyclohexylamine

101-83-7

1

0.0

0.0

0.0

0.0

0.0

0.0

1.3

1.3

213 N,N-dimethylacetamide

127-19-5

79

1.8

0.0

0.0

0.0

1.8

0.0

2.4

2.4

230 N-(1,3-dimethylbutyl)-N’-phenyl-p-phenylenediamine

793-24-8

3

0.0

0.0

0.0

0.0

0.0

0.0

0.6

0.6

232 N, N-dimethylformamide

68-12-2

310

7.9

0.0

0.0

0.0

7.9

0.0

37.0

37.0

44 Indium and its compounds

82 Silver and its water-soluble compounds
86 Cresol
87 Chromium and chromium (III) compounds

272 Water-soluble copper salts (excluding complex salts)

-

40

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

277 Triethylamine

121-44-8

90

5.0

0.0

0.0

0.0

5.0

0.0

0.0

0.0

296 1,2,4-Trimethylbenzene

95-63-6

40

3.2

0.0

0.0

0.0

3.2

0.0

3.0

3.0

297 1,3,5-Trimethylbenzene

108-67-8

12

0.9

0.0

0.0

0.0

0.9

0.0

0.4

0.4

300 Toluene

108-88-3

21

15.8

0.0

0.0

0.0

15.8

0.0

4.4

4.4

304 Lead7439-92-1

26

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

-

7

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

7440-02-0

32,238

0.0

0.0

0.0

0.0

0.0

0.0

70.9

70.9
37.3

305 Lead compounds
308 Nickel
309 Nickel compounds

-

1,326

0.0

0.2

0.0

23.2

23.5

0.0

37.3

330 Bis (1-methyl-1-phenylethyl) peroxide80-43-3

15

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

349 Phenol

108-95-2

262

5.0

0.0

0.0

0.0

5.0

0.0

12.2

12.2

355 Manganese and its compounds

117-81-7

1,253

0.0

0.0

0.0

0.0

0.0

0.0

13.1

13.1

-

20

0.0

0.0

0.0

0.0

0.0

0.1

6.4

6.5

391 Hexamethylene = diisocyanate

822-06-0

47

0.0

0.0

0.0

0.9

0.9

0.0

0.0

0.0

392 Normal Hexane

110-54-3

2

0.8

0.0

0.0

0.0

0.8

0.0

0.8

0.8

-

293

0.0

0.0

0.0

0.2

0.2

11.0

24.1

35.1

50-00-0

1

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

-

539

0.0

0.0

0.0

2.6

2.6

0.0

7.7

7.8

1321-94-4

7

0.0

0.0

0.0

0.0

0.0

0.0

0.0

0.0

(A total of 40 substances with handled volumes of less than one ton)

7

0.3

0.0

0.0

0.0

0.3

0.0

1.1

1.1

374 Hydrofluoric acid and its water-soluble salts

405 Boron compounds
411 Formaldehyde
412 Manganese and its compounds
438 Methylnaphthalene

77
Hitachi Metals Group CSR Detailed Activity Report 2022

(b) Reduction of Chemical Substance Emissions
We have revised our chemical substance management system launched in fiscal 2016, which had
previously targeted only volatile organic compounds (VOCs), based on risks such as acute toxicity andcarcinogenesis, and have identified 50 new substances for management from among substances
handled in large amounts. We are engaged in activities aimed at controlling the release of thesesubstances into the environment. Most are emitted into the atmosphere, and VOCs account for over
90% of the total. We are therefore continuing improvement activities that focus on the treatment ofsolvent components used for product coating, as in the past, working to reduce emissions byconducting technological investigations and making changes in equipment to find substitutes forcoating materials and improve processes.
The amount of emissions released into the atmosphere was 86 tons, or 0.15%, in fiscal 2021, almost
the same as fiscal 2020.

300

2.0%
268

a

Percentage of emissions released into the atmosphere (%)

Trends in Percentage of Chemical Substance Emissions Released into the Atmosphere

250

235

Emissions into atmosphere (tons)

217
a

1.5%

209

200

150

1.0%

100

88
0.53%

86
0.5%

0.47%
0.36%

50

0.18%

0.31%

0.15%

0

0.0%
2016

2017

2018

2019
FY

2020

2021

Emissions to
大気排出量(t)atmosphere (tons)
Percentage of emissions

released into the atmosphere
大気排出割合(Emissions to the（大気排出量/取扱量）
atmosphere/transaction volume)78
Hitachi Metals Group CSR Detailed Activity Report 2022

(5) Eco-Factory Case Study
Reduction of CO2 emissions by using alternative coke

Waupaca Foundry, Inc.

Waupaca Foundry, Inc. (hereinafter “WFI”) melts scrap metal,
by primarily using cupola melting technology, to produce steel
castings for fabricating various parts and components forautomotive and other industries. Approximately 50% of WFI’s
CO2 emissions come from coke used as fuel and carbon
additive in cupolas. To reduce CO2 emissions, WFI adopted
alternative coke as an additive in order to reduce coke usage.
Alternative coke represents a method of reducing coke usage
by replacing some of the coke with a calorie-free carbon
additive, while adjusting the amount of carbon in the cast ironproduct. By implementing this measure, we reduced cokeusage by 10,995 tons and CO2 emissions by 31,616 tons infiscal 2021. WFI also implemented CO2 emissions reduction
Confirming the combustion
condition in the cupola furnace
the blast air of the cupola furnace and recovering waste heat from the furnace, resulting in a total
measures such as reducing coke consumption by dehumidifying

reduction of 41,087 tons of CO2 emissions in fiscal 2021.
In addition to the above-described measures, WFI is promoting various activities, such as introducing
renewable energy, to reduce CO2 emissions and eventually achieve carbon neutrality.

Clad metals for rechargeable batteries of xEVs

Hitachi Metals Neomaterial, Ltd.

In recent years, demand for xEVs* has been increasing rapidly
as people increasingly consider solving climate change issues.
In line with this trend, demand for lithium-ion batteries, which

Hitachi Metals Neomaterial, Ltd. (hereinafter “HMN”)

Ni
Cu

provides materials for the anode leads used in lithium-ion

Ni

are mainly used in xEVs, has also increased significantly.

batteries. The anode lead must have high electricalconductivity because it serves to extract electricity from theClad metals for anode lead (Ni/Cu/Ni)

current-collecting foil. It must also have excellent weldability
because it is incorporated into the battery after being welded to the current-collecting foil.

79
Hitachi Metals Group CSR Detailed Activity Report 2022

HMN has produced a number of clad metals that are madeAnode leadby joining two or more different metals, each with its own
unique characteristics. To meet multiple requirements foranode leads, the Suita Works has developed a three-layer

Current-collecting

clad metal, consisting of nickel as the outer layers surface andfoil (anode)
Current-collector

copper as the inner layer, which is used in lithium-ion batteries

foil (cathode)for xEVs through various customers.

Separator

We have received many requests from customers toincrease production, and we will strive to further improve

Anode lead for lithium-ion battery

production efficiency and contribute to solving
environmental issues by providing materials for xEVs.
* xEV is a generic term for electric vehicles (EV), hybrid electric vehicles (HEV), and plug-in electricvehicles (PHEV).

80
Hitachi Metals Group CSR Detailed Activity Report 2022

(6) Site Data
Materials Flow at Major Domestic Manufacturing Sites in the Hitachi Metals Group in Fiscal 2021
OUTPUTINPUTClassification

Raw materials, etc.

Energy consumption(t / year)(crude oil kl / year)

Water
3

(thousand m / year)

PRTR chemical substances

Emissions(t / year)(t / year)

CO2*1(t / year)

Saga Works

9,740
34,36812,065######
52
9,922
58
15,8170182
32,802
307
27,729312
15,379158,667 5,262
311
14,724770
30,862
61
2,877
0
7,811
46
5,849

4,207 10,299 64,016
76 18,823 51,048
22 10,727 27,314
18,748 61,079 352,665
505 27,731
696
155 3,872 55,969
5,387
460
4
235 16,279
3
198 11,296
12

Ibaraki Plant######

37,798 1,062

1,806 7,136

68,916

HMY, Ltd.

03,324
53,07542,216
0
1,702
2,893
7,564
35,8001,217
8,816

10,221
9,124
41,61627,0805,373
6,615
16,650
9,009
4,713
1,514
5,397

10
11
481
145
18
73
186
61
58
74
184

19,541 1,470
2,915 4,092
2,856 13,522
731 38,894772
0
132 1,558
0 1,41260 1,066
538 2,060
422
30
350 2,020

22,037
19,37878,42448,002
9,464
13,812
34,294
17,817
8,305
3,244
10,105

Kyushu Works
Moka Works
Kuwana Works
Yasugi Works
Okegawa Works
Kumagaya Magnetics WorksYamazaki Manufacturing Dept.

Metglas Yasugi Works

Hitachi Metals Precision, Ltd.
Hitachi Metals Neomaterial, Ltd.
Hitachi Metals Wakamatsu, Ltd.

Hitachi Metals Tool Steel, Ltd.
Hitachi Ferrite Electronics, Ltd.

NEOMAX KINKI Co.,Ltd.
NEOMAX KYUSHU Co., Ltd.
Tonichi Kyousan Cable, Ltd.
Tohoku Rubber Co.,Ltd.
Santoku Corporation

DrainageNOx*2 BOD*2 COD*2 PRTR emissions
SOx*2(t / year) (t / year) (t / year) (t / year) *3 (t / year) *3 (t / year) (thousand m / y ear)Transferred amount of PRTR

3

Maindischarge destination

1.7
0.0
2.3
0.1
3.2
1.1
21.2 155.0
9.8
0.2
0.0
1.4
0.0
0.0
0.0
0.0
0.0
0.0

0.0
6.0
0.0
0.8
3.4
0.0
0.2
0.0
0.0

0.3
0.0
0.1
12.8
3.2
0.0
0.1
0.0
0.0

91.6
0.0
3.2
0.3
0.0
0.1
1.7
0.2
0.0

55 Seto Inland Sea
0.0
226 Kinugawa River
0.0
297 Inabegaw a River
5.9
424.5 5,125 Nakaumi Lake
306 Arakawa River
7.2
4.5
0 Arakawa River
44 Sewerage
2.6
0 Nakaumi Lake
0.0
46
0.0

0.2

5.6

16.9

14.6

26.5

73.7

855

0.6
0.0
0.9
0.0
0.0
0.0
0.1
4.0
0.1
0.7
0.0

0.7
10.8
3.2
8.2
0.0
0.0
1.1
0.7
0.4
0.6
0.0

0.0
0.0
2.4
0.0
0.0
2.5
0.3
0.0
0.0
0.4
0.0

0.0
0.0
1.1
0.0
0.0
0.0
0.4
0.0
0.0
0.6
0.0

0.0
0.0
1.0
0.4
0.0
0.0
0.0
2.5
0.3
13.7
0.0

0.1
8.1
1.1
49.2
0.0
2.2
0.0
2.0
12.8
4.1
25.2

4 Nakaumi Lake
3 Nakaumi Lake
437
78 Sewerage
13 Sewerage
71 Sewerage
186
61
58 Kasumigaura
66 Pacific Ocean
184 Sewerage

Rokkakugawa Riv er

Pacific Ocean
Kazu sawagawa
River,
Juo River

SewerageYoneshirogawa River

Maruyamagawa
RiverRokkakugawa
River*1. Calculations of CO2 emissions for electric power use the adjusted emission coefficients for each power company.
*2. Atmospheric emission concentrations measured based upon the Air Pollution Control Law and Water Pollution Prevention Act.
*3. PRTR emission quantities are totals of emissions to the atmosphere, public waterways, and soil. PRTR transfers are totals of transfers to waste materials and to sewers.

81
Hitachi Metals Group CSR Detailed Activity Report 2022