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Tungsten carbide

CAS No.: 12070-12-1
Formula: CW
Molecular Weight: 195.85
Suppliers: All(0) China Suppliers(0) Products(0)
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What is Tungsten carbide

Tungsten carbide is a highly durable and versatile compound renowned for its exceptional hardness, wear resistance, and strength. Composed of tungsten and carbon atoms, it is one of the hardest materials known, second only to diamond. This makes it ideal for applications requiring extreme durability, such as cutting tools, drill bits, mining equipment, and industrial machinery. Tungsten carbide is also valued for its resistance to high temperatures and corrosion, making it suitable for use in harsh environments. Its unique properties have made it a critical material in industries like aerospace, automotive, and manufacturing, where precision and longevity are paramount.

Preparation Process: Tungsten carbide (WC) is prepared by the direct carburization of tungsten powder with carbon at high temperatures. First, high-purity tungsten powder (W) is mixed with carbon black or graphite in a stoichiometric ratio (typically 6:1 by weight). The mixture is pressed into pellets and heated in a hydrogen or vacuum atmosphere at 1400–1600°C for 1–2 hours to ensure complete reaction (W + C → WC). The product is then cooled, milled, and sieved to obtain fine WC powder. For nanostructured WC, advanced methods like chemical vapor deposition (CVD) or sol-gel processes may be employed. Proper control of temperature and carbon content is critical to avoid unwanted phases like W2C.

Usage Scenarios: Tungsten carbide (WC) is a hard, dense compound widely used in industrial applications due to its exceptional wear resistance and high melting point (2,870°C). It is commonly employed in cutting tools, drill bits, and abrasives for machining metals, wood, and composites. In mining and construction, WC enhances the durability of drill tips and wear parts. It also serves in armor-piercing ammunition due to its hardness. Additionally, WC is used in high-performance ball bearings, seals, and nozzles. The compound’s thermal and electrical conductivity makes it valuable in electronics and aerospace components. Cemented carbide (WC-Co) combines WC with cobalt, further improving toughness for heavy-duty applications.

Tungsten carbide Basic Info
Chemical Name Tungsten carbide
Synonyms ncic61198;Wolframcarbid;Nitinol Sheets;tungsten cabide;Tungsten carbid;Wolfram carbide;Tunsten carbide;TUNGSTEN CARBIDE;tungstencarbide(wc);tungsteniomethanide
CAS No. 12070-12-1
Molecular Formula CW
Molecular Weight 195.85
PSA 0.00000
LogP 0.08130
Safely Info
RTECS YO7250000
Hazard Class 4.1
Safety Statements 22-24/25
HS Code 28499020
WGK Germany -
Packing Group III
RIDADR UN3178
Risk Statements 23
Hazard Codes T
Caution Statement P210-P240-P241-P280-P370+P378a
Hazard Declaration H228
Symbol GHS02
Signal Word -
Tungsten carbide Price
United States: $30-$60 per kg
China: $20-$40 per kg
Russia: $35-$55 per kg
Germany: $40-$70 per kg
India: $25-$45 per kg
Japan: $50-$80 per kg
Brazil: $30-$50 per kg
South Korea: $35-$60 per kg
Philippines: No results
United Kingdom: $45-$75 per kg
France: $50-$80 per kg
Mexico: $25-$45 per kg
Canada: $40-$70 per kg
South Africa: $30-$50 per kg
Egypt: $35-$60 per kg
Turkey: $25-$45 per kg
Thailand: $30-$50 per kg
Indonesia: $20-$40 per kg
MSDS
MSDS
Name: Tungsten Carbide 99% Material Safety Data Sheet
Synonym: Tungsten Monocarbide
CAS: 12070-12-1
Section 1 - Chemical Product   MSDS Name:Tungsten Carbide 99% Material Safety Data Sheet
Synonym:Tungsten Monocarbide

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
12070-12-1 Tungsten Carbide 99 235-123-0
Hazard Symbols: T
Risk Phrases: 23

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Toxic by inhalation.The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause skin irritation.
Ingestion:
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
Inhalation:
May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated.
Chronic:
No information found.

Section 4 - FIRST AID MEASURES
  Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin:
Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion:
Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion.
Extinguishing Media:
Use agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Storage:
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low.
Exposure Limits CAS# 12070-12-1: United Kingdom, WEL - TWA: (listed as tungsten, insoluble compoun 5 mg/m3 TWA (as W) United Kingdom, WEL - STEL: (listed as tungsten, insoluble compounds): 10 mg/m3 STEL (as W) Belgium - TWA: (listed as tungsten, insoluble compounds): 5 mg/m3 (as W) Belgium - STEL: (listed as tungsten, insoluble compounds): 10 mg/ VLE (as W) Malaysia: (listed as tungsten, insoluble compounds): 5 mg/m3 TWA W) Netherlands: (listed as tungsten, insoluble compounds): 5 mg/m3 M (as W) Russia: 6 mg/m3 TWA (as W) Spain: (listed as tungsten, insoluble compounds): 5 mg/m3 VLA-ED W) Spain: (listed as tungsten, insoluble compounds): 10 mg/m3 VLA-EC W) Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Solid
Color: white to off-white
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: CW
Molecular Weight: 195.86

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, excess heat, strong oxidants.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 12070-12-1: YO7250000 LD50/LC50:
Not available.
Carcinogenicity:
Tungsten Carbide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
 

Section 13 - DISPOSAL CONSIDERATIONS
  Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION
 
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T
Risk Phrases:
R 23 Toxic by inhalation.
Safety Phrases:
S 22 Do not breathe dust.
S 28A After contact with skin, wash immediately with
plenty of water.
S 37 Wear suitable gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 12070-12-1: 0
Canada
CAS# 12070-12-1 is listed on Canada's DSL List.
CAS# 12070-12-1 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 12070-12-1 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A
SDS 1.0
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