This SDS is the English translation version of the document No.MEI-4001 that has been issued by
Japan Cutting & Wear-resistant Tool Association. Please note that this SDS may not conform to
the laws, regulations of the countries other than Japan.
＊本 SDS は、日本機械工具工業会発行の文書 No.MEI-4001 を英語に翻訳したものです。本 SDS は、日本国以外の国々の法律や規則に適合しない場合がありますので注意ください。

Safety Data Sheet（SDS）Standard Form…20220106
This SDS (Safety Data Sheet) will be a standard form created by the Japan Cutting &Wear-resistant Tool Association (hereinafter referred to as “JTA”). In particular, the part written inblue letters will be information related to products, ingredients and JTA management, so pleasechange them as appropriate by each company and operate with responsibility.

Established Date: 16/Feb/2017
Revised Date: 06/Jan/2022

1. Identification of the Substance and of the Company
Product Identifier:Cemented Carbide (include the coated or surface treated Cemented Carbide)
Supplier Information:
Company Name: Nihon Hardmetal Co.,Ltd
Address: 4004 Nakatsu Aikawa machi Aikou gun Kanagawa pref, 243-0303
Phone Number: 046-285-0388
FAX Number: 046-285-3136
Emergency Phone Number: 046-285-0388
Recommended Use of the Cemented Carbide
Cutting and drilling tools for metallic materials
Restrictions on Use of the Cemented Carbide
Do not use for other than the specified purpose
Attention to the Phase/State of the Cemented Carbide
・Cemented Carbide as solid state like cutting tools is chemically stable and safe at
explosive, flammable, combustible, pyrophoric, water-reactive, and oxidizability undernormal environment.
・Cemented Carbide is safe for use as the cutting tools (grinding, machining, rolling formetals) under normal condition.
・This SDS informs about the dust, fume or vapor which occur from Cemented Carbide
producing process such as raw material powder handling and grinding.

2. Hazard Identification
The GHS Classification
Some data (such as the burning rate test data, etc.) for the dust, fume or vapor which
occur from Cemented Carbide producing process are unavailable. Therefore, they are not
be classified by GHS.
In here, GHS classification of the each metallic ingredients (cobalt, nickel andchromium) for composing the Cemented Carbide can be disclosed. In addition, otherhazards and harmful effects (for health, environment, physical and chemical) which are
not listed are unclassifiable or non-applicable by GHS.

GHS classification for the hazards of cobalt alone in below,(When cobalt is included as ingredients of Cemented Carbide.)Health Hazard
Category4
・Acute toxicity (oral)
・Acute toxicity (inhaled: dust, mist) Category1・Serious eye damage / eye irritation Category2B
Category1A・Respiratory sensitization
Category1A・Skin sensitization
Category2
・Carcinogenicity
Category1B
・Reproductive toxicity
Category1
・Specific target organ toxicity(Respiratory)(Single exposure)
Category1
・Specific target organ toxicity(Respiratory, Heart,(Repeated exposure)
Thyroid, Blood)
Environmental
Category1
・Hazardous to the aquatic
Hazard:environment – prolonged (Chronic
hazard)Category1
・Hazardous to the aquatic
environment – repeated (Acutehazard)GHS classification for the hazards of nickel alone in below,(When nickel is included as ingredients of Cemented Carbide.)Health Hazard
Category1
・Respiratory sensitization
Category1
・Skin sensitization
Category2
・Carcinogenicity
Category1
・Specific target organ toxicity(Respiratory tract irritation)(Single exposure)
Category1
・Specific target organ toxicity(Respiratory)(Repeated exposure)Environmental
Category4
・Hazardous to the aquatic
Hazard:environment – prolonged (Chronic
hazard)GHS classification for the hazards of chromium alone in below,(When chromium is included as ingredients of Cemented Carbide.)Health Hazard
Category2B・Serious eye damage
Category1
・Respiratory sensitization
Category1
・Skin sensitization
Category2
・Germ cell mutagenicity
Category2
・Specific target organ toxicity(Respiratory tract irritation)(Single exposure)
Category3
・Specific target organ toxicity(Respiratory)(Repeated exposure)
GHS Label Elements
GHS label elements of the each metallic ingredients (cobalt, nickel and chromium) forcomposing the Cemented Carbide can be disclosed in below.

Cobalt

NickelChromium

HazardPictograms：

SignalWords：
HazardStatements：

Danger・Risk of causing
・Risk of causing
・Risk of causing
allergies, asthma or
allergies, asthma or
allergies, asthma or
breathing difficulties
breathing difficulties
breathing difficulties
if inhaled.
if inhaled.
if inhaled.
・Risk of causing an
・Risk of causing an
・Risk of causing anallergic skin reaction. allergic skin reaction. allergic skin reaction.
・May cause cancer.
・May cause cancer.
・Suspected of causing
genetic disease
・May cause adverse・Respiratory and・Failure to systemic
effects on fertility or
kidney disorders
the unborn child.
・Cause of respiratory toxicity
・Risk of respiratory
・Risk of respiratory
failure due toirritation.
long-term or repetitive irritation.
・Cause of respiratory exposure.
・May be harmful tofailure due tolong-term oraquatic life due to longrepetitive exposure.
lasting effects
・May be harmful toaquatic life due tolong lasting effects
Precautionary 【Prevention】
Statements： ･Obtain safety instructions* before use.
･Do not handle until all safety precautions have been read andunderstood.
･Use appropriate personal protection and ventilation system keeping
away from exposure.
･Wear suitable protective gloves.
･When insufficient ventilation, wear respirator as required.
･Do not breathe dust, fume or vapor.
･Do not eat, drink or smoke in handling area.
･Wash skin thoroughly after handling.
･Do not release into the environment.
【Responses】･If inhaled, move to fresh air and take a rest with posture easy tobreathe.
･If respiratory symptoms occurs, contact a doctor.
･When feeling ill, get medical advice/attention.
･Take off contaminated clothing and wash before reuse.
･If on skin, rinse away immediately with a large amount of water andsoap.
･If skin irritation occurs, contact a doctor and get medical
advice/attention.
･If exposed or concerned, get medical advice/attention.
･If dust is in eyes, immediately wash away with clean water (remove
the contact lenses if possible). If irritation persists, get medical

advice/attention.
･If a large amount of dust is swallowed, get medical advice/attention
after ingesting plenty of water to dilute.
【Storage】･Avoid sudden changes of temperature and high humidity for storage.
【Disposal】･Dispose of contents/container to an approved waste disposal plantunder the laws.
*For safety instructions, refer to the Japan Cutting & Wear-resistant Tool Association
website（http://www.jta-tool.jp/）.
3. Composition/Information on Ingredients
Distinction between chemical substance and mixture: Mixture (alloy)
Chemical name or general name: Cemented Carbide
Cemented Carbide may be coated or surface treated with the following substances.
AlCrN, AlN, Al2O3, (Al,Ti)N, B4C, Cr3C2, CrN, MoS2, Ti(B,C,N), TiC, TiCN, TiN,
(Ti,Si)N, (Ti,Zr)N, WC
Ingredients and concentration or concentration range (composition) of the Cemented
CarbideIngredientChemical
Formula

CAS NoOfficial Numberof Law for
PRTR

Official Number ofIndustrial Safety
and Health Law

Compositionmass%

Tungsten carbideWC

12070-12-1

N/A

N/A

55-95

Tantalum carbide

TaC

12070-06-3

N/A

N/A

0-20

Niobium carbide

NbC

12069-94-2

N/A

N/A

0-20

Titanium carbide

TiC

12070-08-5

N/A

N/A

0-20

Titanium nitride

TiN

25583-20-4

N/A

N/A

0-5

Vanadium carbide

VC

12070-10-9Class1:321

N/A

0-5

CobaltCo

7440-48-4

Class1:132

Appendix9-172

0-30

NickelNi

7440-02-0

Class1:308

Appendix9-418

0-30

ChromiumCr

7440-47-3

Class1:87

Appendix9-142

0-5*For the details regarding the content of the designated chemical material such as cobalt,
nickel, chromium, and vanadium carbide (effective digit: 2), please contact to the above
supplier.
*Even if the Cemented Carbide do not contain cobalt, nickel, chromium as an active
ingredient may include cobalt, nickel, chromium as an impurity.

4. First-Aid Measures
If Inhaled
If the high concentration of dust is inhaled or respiratory symptoms (coughs, gasping,shortness of breath, etc.) are experienced, move to fresh air and take a rest with postureeasy to breathe. If breathing difficulties occur, administer oxygen inhalation. If
breathing has stopped, immediately administer artificial respiration and get medical
advice/attention.
If irritation or rash persists, get medical advice and attention.
If on Skin
If dust is contacted with skin, take off contaminated clothing and rinse the affectedarea with soapy water thoroughly. If irritation or rash persists, get medical
advice/attention.

If in Eyes
If dust is in eyes, immediately wash away with clean water (remove the contact lenses
if possible). If irritation persists, get medical advice/attention.
If Swallowed
If a large amount of dust is swallowed, get medical advice/attention after ingesting
plenty of water to dilute.

5. Fire-Fighting Measures
Suitable Extinguishing Media and Unsuitable Extinguishing MediaTo extinguish the fire of dust, use dry sand, expanded vermiculite, dilatable perlite,
ABC type (general, oil, electric fire) powder extinguishers or water (no water allowed forthe dust containing cut powders of light metal such as magnesium and aluminum).
Special Protective Equipment and Emergency Procedures for Fire-Fighters
In fighting a fire, wear a protective clothing, dust-proof respirator or respiratory
protective equipment.
6. Accidental Release Measures
Personal Precautions, Protective Equipment, and Emergency Procedures
It is recommended that someone who cleans dust should wear clothing and respiratory
protective equipment to minimize exposure.
Environmental Precautions
Dispose of dust as industrial wastes and prevent release in water systems.
Containment and Cleanup Methods and Equipment
If there is dust which occur from Cemented Carbide producing process, isolate the area
and remove with a cleaner equipped with a filter which can take up fine particles very
efficiently. If appropriate removing methods are not available, sweep with water
sprayers or wet mops.
7. Handling and Storage
Handling■ Technical Measures
If the disperse of dust containing cobalt or nickel is concerned, provide local exhaust
ventilation and use personal protective equipment to minimize exposure to humanbody.
■ Precautions for Safe Handling
Obtain safety instructions before use.
Do not handle until all safety precautions have been read and understood.
■ Contact Avoidance
Take measures described in “Exposure Controls/Personal Protection.”
Do not breathe dust, fume or vapor.
Do not eat, drink or smoke in handling area.
■ Hygiene Measures
Wash skin thoroughly after handling.
Do not release into the environment.
Storage■ Conditions for Safe Storage
Avoid sudden changes of temperature and high humidity for storage.
If storing fine powder, dust, and swarf generated by cutting or polishing, cover themwith a cover to prevent dispersal.
■ Materials for Safe Container
Use materials meeting the specific gravity of CBN/Cemented Carbid

8. Exposure Controls/Personal Protection
Exposure Prevention
・Permissible concentration in working environment (reference value)

IngredientChemical
Formula

OSHA* PEL*
mg/m3

ACGIH* TLV*
mg/m3

Japan Society for
Occupational Health
Exposure Limit*
mg/m3

Tungsten carbide
Tantalum carbide
Niobium carbide
Titanium carbide
Titanium nitride
Vanadium carbide
CobaltNickelChromium

WC
TaC
NbC
TiC
TiN
VC
Co
Ni
Cr

5 (as W)
5 (as Ta)
N/A
N/A
N/A
N/A
0.1
1.0
1.0

5 (as W)
5 (as Ta)
N/A
N/A
N/A
N/A
0.02
1.5
0.5

N/A
N/A
N/A
N/A
N/A
N/A
0.05
1.0
0.5

*OSHA：*PEL：*ACGIH：*TLV：* Exposure
Limit:*N/A：

Occupational Safety & Health Administration U.S. Department
Permissible Exposure Limit
American Conference of Governmental Industrial Hygienists Inc.
Threshold Limit Value
If processing such as polishing and cutting that generates dust, foringredients with not indicated value, refer to the exposure limit of theJapan Society for Occupational Health
Not Applicable・Facility measures
Provide local exhaust ventilation so that dusts in the air may not exceed the exposure
limits in the above table. It is to be noted that management concentration of the cobalt(and its inorganic compounds) is to be 0.02mg/m3 in accordance with the working
environment assessment standard by Japanese Minister of Health, Labour and Welfare
under the paragraph (2), Article 65-2 of the Industrial Safety and Health Act in Japan.
In addition, cobalt (and its inorganic compounds) in the storage or handling, and that totake the necessary action conforming to the Ordinance on Prevention of Hazards due toSpecified Chemical Substances.
Protection Measures
Respiratory Protection:
Hand Protection:
Eye Protection:
Skin/Body Protection:

Dust-proof respirators and respiratory protective equipment
are recommended.
Protective gloves for dust are recommended.
Protective glasses for dust are recommended.
Avoid direct skin contact.
Clean up deposited dust on clothing, rags, etc. by washing or
absorbing with suitable filters but not by whisking off.
Change the contaminated clothing into clean one.

Hygiene Measure
Wash skin thoroughly after handling.

9. Physical and Chemical Properties
Physical State:
Solid state
Color :
Dark gray color(in case of the coated or surface treated cemented carbide, theappearance color is often different.)
Odor:
Odorless
Melting/Freezing No data available
Point:
Boiling or Initial No data available
Boiling Point andBoiling Range:
Flammability,
No data available
Explosion
Limits,Flammability
Limit,
Flash
Point,
Spontaneous
Ignition
Temperature,
Resolution
Temperature:pH:
No data available
Kinematic
No data available
Viscosity:
Solubility:
Insoluble
Vapor Pressure:
No data available
Density and/or 11.0 - 15.5
Relative Density:
Relative
Gas No data available
Density:
Particle
No data available
Properties:
10. Stability and Reactivity
A grain of dust which occur from Cemented Carbide producing process is very fine andunder the specific conditions in which the dusts are mixed with grinding oil with low flash
point, it is possible to become pyrophoric. If dusts under very flammable conditions are
dispersed in the air, it is possible to explode.
The each metallic ingredients (cobalt, nickel and chromium) for composing the cemented
carbide has the following information about stability and reactivity under specificconditions.
Stability and reactivity of cobalt alone in below,(When cobalt is included as ingredients of Cemented Carbide.)
Reactivity, chemical stability:
Stable to heat and contact with water
Ignite spontaneously in air
Hazardous reactions:
It reacts with strong oxidizing agents
It reacts violently with oxygen, and it poses a riskof fire or explosion
It reacts violently with acid to generate hydrogen
Conditions to avoid:Contact with incompatible materials
Incompatible materials:
Strong oxidizing agents, acidHazardous decomposition products:
By combustion, cobalt oxide and fumes of cobalt
oxide may occur

Stability and reactivity of nickel alone in below,(When nickel is included as ingredients of Cemented Carbide.)
Reactivity, chemical stability:
It is considered stable in storage and handling inaccordance with the laws and regulations
Hazardous reactions:
Metallic nickel is usually stabilized against
oxidation by the oxide film, fresh metal surfaces
without oxide film is rapidly oxidized by air. Thus,
fresh metallic nickel powder, there is a risk ofignition in air.
Conditions to avoid:No data available
Hazardous decomposition products:
No data available
Stability and reactivity of chromium alone in below,(When chromium is included as ingredients of Cemented Carbide.)
Reactivity, chemical stability:
Stable under normal handling conditions
Hazardous reactions:
Reacts violently with strong oxidizing agents suchas hydrogen peroxide, it poses a risk of fire or
explosion.
It reacts with dilute hydrochloric acid and dilute
sulfuric acid.
Conditions to avoid:
The alkali or alkaline carbonate is Incompatible.
When mixed with air in powder or granular form,
there is a possibility of dust explosion.
Incompatible materials:
Strong oxidizing agents, dilute hydrochloric acid,
dilute sulfuric acid, alkali, alkali carbonate
Hazardous decomposition products:
During combustion, there can be irritating or toxic
fumes and gases.

11. Toxicological Information
Acute Toxicity:
Skin Corrosion/Irritation:
Serious Eye Damage/Eye Irritation:
Respiratory or Skin Sensitization:
Germ Cell Mutagenicity:
Carcinogenicity:

No data available on Cemented Carbide
No data available on Cemented Carbide
No data available on Cemented Carbide
No data available on Cemented Carbide
No data available on Cemented Carbide
Group 2A on IARC, as cobalt powder
coexisting with tungsten carbide powder.
Suspected to be carcinogenic in humans(Ref.1)
Reproductive Toxicity:
No data available on Cemented Carbide
Specific Target Organ Toxicity/Systemic Toxicity: No data available on Cemented Carbide(Single Exposure)Specific Target Organ Toxicity/Systemic Toxicity: No data available on Cemented Carbide(Repeated Exposure)
Aspiration Hazard:
No data available on Cemented Carbide

12. Ecological Information
Ecotoxicity, Persistence, Degradability, Bioaccumulation, Mobility in soil, Hazardous tothe ozone layer
Not reported on Cemented Carbide
13. Disposal Considerations
Safe and environmentally desirable disposal method
The main ingredients such as tungsten carbide, cobalt, nickel are rare metal. It is
desirable to collect and recycle them.

For disposal, conform to the applicable laws regarding industrial wastes such as ‘Waste
Disposal and Public Cleansing Law’ and relevant local by laws.

14. Transport Information
International Regulations
UN Number:
Not applicable
Proper Shipping
Not applicableName
UN Hazard Class:Not applicable
Marine Pollutant:
Not applicable*When transporting a powder of metallic ingredients (cobalt, nickel) for composing the
Cemented Carbide, there is a possibility that it is necessary to take appropriate action inaccordance with the relevant provisions established by IMO (International Maritime
Organization), ICAO (International Civil Aviation Organization), IATA (International Air
Transport Association).
Domestic Regulations
Land Regulatory Information

In accordance with theFire Service Act/ theRoad Act
Marine Transportation
In accordance with theInformation:
Ship Safety Act/ the
Act
on
Port
Regulations
Marine Pollutant:
Not applicable
Aviation transportation
In accordance with the
Civil Aeronautics Act
information：*When transporting a powder of metallic ingredients (cobalt, nickel) for composing the
Cemented Carbide, there is a possibility that it is necessary to take appropriate action inaccordance with the relevant provisions of Ship Safety Law and the Aviation Law.
Special Safety Measures for Transportation and Transportation Method
When transporting the dust which occur from Cemented Carbide producing process, makesure that there is no damage or corrosion or leakage of the container, to ensure
implementation of the prevention of collapse of cargo.

15. Regulatory Information
Name and Information of Applicable Regulatory
Law for Pollutant Release and Transfer Register (PRTR)
Vanadium carbide: “Class 1 designated chemical substances”, Cabinet Order No.321
Cobalt: “Class 1 designated chemical substances”, Cabinet Order No.132
Nickel: “Class 1 designated chemical substances”, Cabinet OrderNo.308
Chromium: “Class 1 designated chemical substances”, Cabinet OrderNo.87
Industrial Safety and Health Law, Ordinance on Prevention of Hazards due toSpecified Chemical Substances
Cobalt: The substances are defined in the Article 57-2 of the Act, and the cobalt islisted by No.172 in Appended Table9 in the Article 18-2 of the
Enforcement Order as “Dangerous or Harmful Substances to be notified
their names, etc.”
Article 2, Paragraph 1, Items 2 and 5 of Ordinance on Prevention ofHazards due to Specified Chemical Substance, Specified chemical
substance class 2, Management class 2.

When the content of cobalt and cobalt oxide is less than 1%, the Ordinanceon Prevention of Hazards due to Specified Chemical Substance is notcovered.
Nickel: The substances are defined in the Article 57-2 of the Act, and the nickel islisted by No.418 in Appended Table9 in the Article 18-2 of the
Enforcement Order as “Dangerous or Harmful Substances to be notified
their names, etc.”
Chromium: The substances are defined in the Article 57-2 of the Act, and thechromium is listed by No.142in Appended Table9 in the Article 18-2 ofthe Enforcement Order as “Dangerous or Harmful Substances to be
notified their names, etc.”
16. Other Information
Other Hazardous Information
The following attention should be paid for dust which occur from Cemented Carbide
producing process.
If a large amount of dust containing cobalt is inhaled, blood, heart, thyroid gland, andspleen disorders may result. (Ref.2)
It is reported that repeated or prolonged contact with cobalt, nickel, or chromium may
affect skin, respiratory organs, heart, etc. (Ref.3 - 6)
For carcinogenicity of metallic ingredients of cemented carbide has the following
knowledge.
Cobalt metal
ACGIH
A3: Confirmed animal carcinogen withunknown relevance to humans.
IARC
2B: Possibly carcinogenic to humans.
Japan Society for
2B: The substance has been determined to be
Occupational
possibly carcinogenic to humans (withHealthrelatively insufficient evidence).
Nickel metal
ACGIH
A5: Not suspected as a human carcinogen.
IARC
2B: Possibly carcinogenic to humans.
Japan Society for
2B: The substance has been determined to be
Occupational
possibly carcinogenic to humans (withHealthrelatively insufficient evidence).
Chromium metal
IARC
3: Not classifiable as to its carcinogenicity tohumans.
*ACGIH：

American Conference of Governmental Industrial Hygienists Inc.

*IARC：

International Agency for Research on Cancer

Disclaimer
The contents of this SDS are based on material and information available as of today andmay be revised due to knowledge newly obtained. The values of concentration,
physical/chemical properties are not guaranteed. In addition, the precautions describedherein apply only to normal uses, and thus safety cannot be guaranteed.
Reference URL
Ministry of Economy, Trade and Industry：
Ministry of the Environment：
Ministry of Health, Labour and Welfare：Japan Industrial Safety and Health Assoc.：

http://www.meti.go.jp/
http://www.env.go.jp/
http://www.mhlw.go.jp/
http://www.jaish.gr.jp/

International Agency for Research on Cancer：
http://monographs.iarc.fr/
International Chemical Safety Card：
http://www.nihs.go.jp/ICSC/National Institute of Technology and Evaluation：
http://www.safe.nite.go.jp/ghs/list.html
Reference Documents(1) IARC Monographs on the Evaluation of Carcinogenic Risks to Humans, vol.86(2006).
(2) Food & Drug Research Laboratories, study No.8005B (4.11.84).
(3) T. Shirakawa et al., Chest. 95, 29 (1989).
(4) International Chemical Safety Cards (cobalt, chromium, nickel).
(5) The Guide to Chemical Hazards (edited by Japan Industrial Safety & Health
Association)(6) A. O. Bech et al., Brit. J. Ind., 19, 239 (1962).
Revision History
First edition
First revision

16/Feb/2017
06/Jan/2022