Safety Data Sheet (SDS)First edition: 1/Apr/2009
Forth revision: 25/Dec/2023

1. Identification of the Substance and of the Company
Product Identifier: Cemented Carbide (including coated or surface-treated Cemented Carbide)
Supplier Information:
Company Name:OSG Corporation
Address:
3-22 Honnogahara Toyokawa-City Aichi-Pref. 442-8543, Japan
Contact Department:
Quality Assurance Dept
Phone Number:(81) 536-25-1315 (International Dept.)
FAX Number:(81) 536-25-1310
Emergency Phone Number: (81) 536-25-1315 (International Dept.)
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 a solid is chemically stable and safe from explosives, flammable, combustible,
pyrophoric, water reactive, and oxidizable in a normal environment.
• Cemented Carbide is safe for use as cutting tools (grinding, machining, rolling for metals) undernormal conditions.
• This SDS informs about the dust, fumes or vapors which occur from Cemented Carbide producing
process such as raw material powder handling and grinding.

2. Hazard Statements:
The GHS Classification
Some data (such as the burning rate test data, etc.) for the dust, fumes or vapors which occur from
Cemented Carbide producing process are unavailable. Therefore, they are not classified by GHS.
The hazards of the individual metal ingredients (cobalt, nickel, and chromium) that make up the
Cemented Carbide are classified as follows. In addition, other hazards and harmful effects (health,environmental, physical and chemical) that are not listed are not applicable or classifiable under GHS.
 GHS classification for the hazards of cobalt alone is below.
(When cobalt is included as a metal ingredient of Cemented Carbide)
Health Hazard:  Acute toxicity (oral)
Category 4
 Acute toxicity (inhalation: dust, mist)
Category 1
 Serious eye damage/Eye irritation
Category 2B
 Respiratory sensitization
Category 1A
 Skin sensitization
Category 1A
 Carcinogenicity
Category 2
 Reproductive toxicity
Category 1B
 Specific target organ toxicity (single exposure)
Category 1 (respiratory system) Specific target organ toxicity (repeated exposure) Category 1 (respiratory system,
heart, thyroid,
blood system,
reproductive system (male))
Environmental  Hazardous to the aquatic environment – short-term (acute) Category 1
Hazard: Hazardous to the aquatic environment – long-term (chronic) Category 1

 GHS classification for the hazards of nickel alone is below.
(When nickel is included as a metal ingredient of Cemented Carbide)
Health Hazard:  Respiratory sensitization
Category 1
 Skin sensitization
Category 1
 Carcinogenicity
Category 2
 Specific target organ toxicity (single exposure)
Category 1 (respiratory system,
kidney) Specific target organ toxicity (repeated exposure)
Category 1 (respiratory system)
Environmental  Hazardous to the aquatic environment – long-term (chronic) Category 4
Hazard: GHS classification for the hazards of chromium alone is below.
(When chromium is included as a metal ingredient of Cemented Carbide)
Health Hazard:  Serious eye damage/Eye irritation
Category 2
 Respiratory sensitization
Category 1A
 Skin sensitization
Category 1A
 Specific target organ toxicity (single exposure)
Category 3 (respiratory tract irritation)
GHS Label Elements
GHS label elements for the individual metal ingredients (cobalt, nickel and chromium) that make up
the Cemented Carbide are as follows.
CobaltNickelChromium
Hazard Pictograms:

Signal Words:
Hazard Statements:

Danger Harmful if swallowed Life threatening if
inhaled Eye irritation
 Risk of causing allergies,
asthma or breathingdifficulties if inhaled Risk of causing anallergic skin reaction
 May cause cancer
 May cause adverse
effects on fertility or theunborn child Organ disorder(respiratory system) Organ disorder due tolong-term or repeatedexposure (respiratory
system, heart, thyroid,
blood system,
reproductive system(male))
 Very toxic to aquatic life
due to long-lasting
effects

 Risk of causing
allergies, asthma or
breathingdifficulties if
inhaled Risk of causing anallergic skinreaction May cause cancer
 Respiratory andkidney disorders
 Respiratory
disorder due tolong-term or
repeated exposure May be harmful toaquatic life due tolong-lasting effects

 Severe eye irritation
 Risk of causing
allergies, asthma or
breathing difficulties
if inhaled Risk of causing anallergic skin reaction
 Risk of respiratory
irritation (respiratory
tract irritation)Precautionary
Statements:【Prevention】
 Obtain safety instructions* before use Do not handle until all safety precautions have been read and understood Use appropriate personal protection and ventilation system keeping awayfrom exposure Wear suitable protective gloves
 If ventilation is inadequate, wear a suitable respirator
 Do not breathe dust, fumes or vapors
 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 to breathe If respiratory symptoms occur, 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 and soap
 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 thecontact lenses if possible)
If irritation persists, get medical advice/attention
 If a large amount of dust is swallowed, get medical advice/attention afteringesting plenty of water to dilute【Storage】
 Avoid sudden changes of temperature and high humidity for storage【Disposal】
 Contact a specialized waste disposal company licensed by the governor*For safety instructions, refer to the Japan Cutting & Wear-resistant Tool Association website(http://www.jta-tool.jp/)
3. Composition/Information on Ingredient Distinction between 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, etc.
 Ingredients and concentration or concentration range (composition) of the Cemented Carbide
IngredientTungsten carbide
Tantalum carbide
Niobium carbide
Titanium carbide
Titanium nitride
Vanadium carbide
CobaltNickelChromium

Chemical
Formula
WC
TaC
NbC
TiC
TiN
VC
Co
Ni
Cr

CAS No12070-12-1
12070-06-3
12069-94-2
12070-08-5
25583-20-4
12070-10-9
7440-48-4
7440-02-0
7440-47-3

PRTR Law
No

Official Number of Industrial
Safety and Health Law

Composition
mass%

321
132
308
87

n/a
n/a
n/a
n/a
n/a
n/a
Appendix 9-172
Appendix 9-418
Appendix 9-142

55 to 95
0 to 20
0 to 20
0 to 20
0 to 50 to 50 to 30
0 to 30
0 to 5※ For the details regarding the content of the designated chemical material (effective digit: 2) such ascobalt, nickel, chromium, and vanadium carbide, please contact the responsible department.
※ Even if the cemented carbide does not contain cobalt, nickel, and chromium as an active ingredient,
it may contain cobalt, nickel, and chromium as an impurity.

4. First-Aid Measures
If Inhaled If the high concentration of dust is inhaled or respiratory symptoms (coughs, gasping, shortness ofbreath, etc.) are experienced, move to fresh air and take a rest with posture easy 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/attention.
If on Skin If dust is contacted with skin, take off contaminated clothing and rinse the affected area 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 Media To extinguish dust fire, use dry sand, expanded vermiculite, dilatable perlite, ABC type (general, oil,electric fire) powder extinguishers or water (no water allowed for the dust containing cut powdersof 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 waste and prevent release in water systems.
Containment and Cleanup Methods and Equipment
 If there is dust which occurs from Cemented Carbide producing process, isolate the area and remove
the dust with a cleaner equipped with a filter which can take up fine particles very efficiently. If
appropriate removing methods are not available, wet with water mist or wet floor mop to removedust.
7. Handling and Storage
Handling■
Technical Measures If the disperse of dust containing cobalt or nickel is concerned, provide local exhaust ventilation anduse personal protective equipment to minimize exposure to human body.
■
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, fumes or vapors.
 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 them with a cover toprevent dispersal.
■

Materials for Safe Container
 Use materials meeting the specific gravity of Cemented Carbide

8. Exposure Controls/Personal Protection
Exposure Prevention
 Permissible concentration in working environment (reference value)
IngredientTungsten carbide
Tantalum carbide
Niobium carbide
Titanium carbide
Titanium nitride
Vanadium carbide
CobaltNickelChromium*OSHA:*PEL:*ACGIH:*TLV:*Exposure
Limit:*N/A:

Chemical
Formula

OSHA*
PEL*
mg/m3

ACGIH*
TLV*
mg/m3

WC
TaC
NbC
TiC
TiN
VC
Co
Ni
Cr

N/A
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

Japan Society for
Occupational Health
Exposure Limit*
mg/m3

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

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, for ingredients withno indicated value, refer to the exposure limit of the Japan Society for Occupational
HealthNot Applicable Facility measures
Provide local exhaust ventilation so that dust in the air may not exceed the exposure limits in theabove table.
It is to be noted that the management concentration of cobalt (and its inorganic compounds) is tobe 0.02 mg/m3 in accordance with the working environment assessment standard by the Japanese
Minister of Health, Labour and Welfare under paragraph (2), Article 65-2 of the Industrial Safety and
Health Act in Japan.
In addition, for cobalt (and its inorganic compounds) in storage or handling, take the necessary
action conforming to the Ordinance on Prevention of Hazards due to Specified Chemical Substances.
Protection Measures
 Respiratory Protection:
 Hand Protection:
 Eye/Face Protection:
 Skin/Body Protection:

Dust-proof respirators and respiratory protective
equipment are recommended.
Protective gloves for dust are recommended.
Eye/Face protections for dust are recommended.
Avoid direct skin contact.
Clean up deposited dust on clothing, rags, etc. by washing or
absorbing it with suitable filters, but not by whisking it off. Clothing
exposed to dust should be replaced with new clothing.

9. Physical and Chemical Properties
Physical State:
Color:

Solid state
Dark gray color

Odor:
Melting/Freezing Point:
Boiling or Initial Boiling Point andBoiling Range:
Flammability, Explosion Limits,
Flammability Limit, Flash Point,
Spontaneous Ignition Temperature,
Resolution Temperature:
pH:
Kinematic Viscosity:
Solubility:
Vapor Pressure:
Density and/or Relative Density:
Relative Gas Density:
Particle Properties:

Odorless
No data available
No data available(In case of the coated or surface treated Cemented Carbide, theappearance color is often different.)

No data available

No data available
No data available
Insoluble
No data available
11.0 to 15.5
No data available
No data available

10. Stability and Reactivity
A grain of dust which occurs from Cemented Carbide producing process is very fine and under the
specific conditions in which the dust is mixed with grinding oil with low flash point, it is possible tobecome pyrophoric. If dust under very flammable conditions is dispersed in the air, it is possible toexplode.
The individual metal ingredients (cobalt, nickel, and chromium) for composing the Cemented Carbide
have the following information about stability and reactivity under specific conditions.
 Stability and reactivity of cobalt alone is below.
(When cobalt is included as a metal ingredient of Cemented Carbide)
Reactivity, chemical stability:
 Stable to heat and contact with water.
 Ignites spontaneously in air.
Hazardous reactions: Reacts with strong oxidizing agents.
 Reacts violently with oxygen, posing a risk of fire or explosion.
 Reacts violently with acid to generate hydrogen.
Conditions to avoid: Contact with incompatible materials.
Incompatible materials:
 Strong oxidizing agents, acid.
Hazardous decomposition
 By combustion, cobalt oxide and fumes of cobalt oxide may
products:
occur.
 Stability and reactivity of nickel alone is below.
(When nickel is included as a metal ingredient of Cemented Carbide)
Reactivity, chemical stability:
 It is considered stable in storage and handling in accordance withthe laws and regulations.
Hazardous reactions: Although metal nickel is usually stabilized against oxidation by
the oxide film, fresh metal surfaces without oxide film is rapidly
oxidized by air. Therefore, there is a risk of ignition in the air for
fresh metal nickel powder.
Conditions to avoid: No data available
Hazardous decomposition
 No data available
products:

 Stability and reactivity of chromium alone is below.
(When chromium is included as a metal ingredient of Cemented Carbide)
Reactivity, chemical stability:
 Stable under normal handling conditions.
Hazardous reactions: Reacts violently with strong oxidizing agents such as hydrogen
peroxide, posing a risk of fire or explosion.
 Reacts with dilute hydrochloric acid and dilute sulfuric acid.
Conditions to avoid: Incompatible with alkalis and alkaline carbonates.
 When mixed with air in powder or granular form, there is apossibility of dust explosion.
Incompatible materials:
 Strong oxidizing agents, dilute hydrochloric acid, dilute sulfuric
acid, alkali, alkali carbonate.
Hazardous decomposition
 During combustion, there can be irritating or toxic fumes andproducts:
gases.

11. Toxicological Information
Acute Toxicity:
Skin Corrosion/Irritation:
Serious eye damage/Eye irritation:
Respiratory or Skin Sensitization:
Germ Cell Mutagenicity:
Carcinogenicity:
Reproductive Toxicity:
Specific Target Organ Toxicity (Single
Exposure):
Specific Target Organ Toxicity (Repeated
Exposure):
Aspiration Hazard:

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
Cobalt powder coexisting with tungsten carbide is
IARC Group 2A. Suspected to be a humancarcinogen. (Ref.1)
No data available on Cemented Carbide
No data available on Cemented Carbide
No data available on Cemented Carbide
No data available on Cemented Carbide

12. Ecological Information
Ecotoxicity, Persistence/Degradability, Bioaccumulation, Mobility in soil, Hazardous to the ozone
layer No data available on Cemented Carbide
13. Disposal Considerations
Safe and environmentally desirable disposal or recycle method The main ingredients such as tungsten carbide, cobalt, nickel are rare metal, so it is desirable tocollect and recycle them.
 For disposal, comply with the applicable laws and regulations regarding industrial waste.
14. Transport Information
International Regulations
UN Number:
Not applicable
Proper Shipping
Not applicableName:
UN Hazard Class:Not applicable
Packing Group:
Not applicable
Marine Pollutant:
Not applicable※ When transporting a powder of metal ingredients (cobalt, nickel) for composing the Cemented
Carbide, there is a possibility that it is necessary to take appropriate action in accordance with therelevant provisions established by IMO (International Maritime Organization), ICAO (International
Civil Aviation Organization), IATA (International Air Transport Association).

Domestic Regulations
Land Regulatory
In accordance with the Fire
Information:
Service Act/ the Road Act
MarineIn accordance with the Ship
Transportation
Safety Act/ the Act on Port
Information:
Regulations
Marine Pollutant:
Not applicable
Aviation
In accordance with the Civil
Transportation
Aeronautics Act
Information：※ When transporting a powder of metal ingredients (cobalt, nickel) for composing the Cemented
Carbide, there is a possibility that it is necessary to take appropriate action in accordance with therelevant provisions of the Ship Safety Act and the Civil Aeronautics Act.
Special Safety Measures for Transportation and Transportation Method
When transporting the dust which occurs from Cemented Carbide producing process, make sure that
there is no damage or corrosion or leakage of the container, to ensure implementation of the preventionof 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 substance No. 363
CobaltClass 1 designated chemical substance No. 156
NickelClass 1 designated chemical substance No. 354
ChromiumClass 1 designated chemical substance No. 111
 Industrial Safety and Health Law, Ordinance on Prevention of Hazards due to Specified Chemical
Substances
CobaltThe substance is defined in Article 57-2 of the Act, and is listed as
No.172 in Appended Table 9 in Article 18-2 of the Enforcement Orderas Dangerous or Harmful Substances to be notified of 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.
NickelThe substance is defined in Article 57-2 of the Act, and is listed asNo.418 in Appended Table 9 in Article 18-2 of the Enforcement Orderas Dangerous or Harmful Substances to be notified of their names, etc.
Chromium
The substance is defined in Article 57-2 of the Act, and is listed as
No.142 in Appended Table 9 in Article 18-2 of the Enforcement Orderas Dangerous or Harmful Substances to be notified of their names, etc.

16. Other Information
Other Hazardous Information
 If a large amount of dust containing cobalt is inhaled, blood, heart, thyroid gland, and spleen
disorders may result. (Ref.2)
 It is reported that repeated or long-term contact with cobalt, nickel, or chromium may affect skin,
respiratory organs, heart, etc. (Ref.3 to 6)
 The carcinogenicity of the metal ingredients is as follows.
Cobalt metal
ACGIH
A3: Confirmed to be carcinogenic to animals, but
relevance to humans is unknown
IARC
2B: Possibly carcinogenic to humans
Japan Society for
2B: The substance has been determined to be possibly
Occupational Healthcarcinogenic to humans (with relatively insufficientevidence)
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 possibly
Occupational Healthcarcinogenic to humans (with relatively insufficientevidence)
Chromium
IARC
3: Not classifiable as to its carcinogenicity to humans
metal*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 and may berevised due to knowledge newly obtained. The values of concentration, physical/chemical properties are
not guaranteed. In addition, the precautions described herein 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 Association:
 International Agency for Research on Cancer:
 International Chemical Safety Cards:
 National Institute of Technology and Evaluation:

http://www.meti.go.jp/
http://www.env.go.jp/
http://www.mhlw.go.jp/
http://www.jaish.gr.jp/
http://monographs.iarc.fr/
http://www.nihs.go.jp/ICSC/
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).