Tungsten carbide

Tungsten carbide
Names
	IUPAC name Tungsten carbide
	Other names Tungsten(IV) carbide; Tungsten tetracarbide
Identifiers
CAS Number	12070-12-1 ;
3D model (JSmol)	(W+≡C−): Interactive image;
ChemSpider	2006424;
ECHA InfoCard	100.031.918
EC Number	235-123-0;
PubChem CID	2724274 (W+≡C−);
RTECS number	YO7250000;
UNII	PKZ44S724L ;
UN number	3178
CompTox Dashboard (EPA)	DTXSID4029305;
	InChI InChI=1S/C.W/q-1;+1 Key: UONOETXJSWQNOL-UHFFFAOYSA-N ;
	SMILES (W+≡C−): [C-]#[W+];
Properties
Chemical formula	WC
Molar mass	195.85 g·mol−1
Appearance	Grey-black lustrous solid
Density	15.6 g/cm3
Melting point	2,785–2,830 °C (5,045–5,126 °F; 3,058–3,103 K)
Boiling point	6,000 °C (10,830 °F; 6,270 K) ; at 760 mmHg
Solubility in water	Insoluble
Solubility	Soluble in HNO; 3, HF
Magnetic susceptibility (χ)	1·10−5 cm3/mol
Thermal conductivity	110 W/(m·K)
Structure
Crystal structure	Hexagonal, hP2
Space group	P6m2, No. 187
Point group	6m2
Lattice constant	a = 2.906 Å, c = 2.837 Å α = 90°, β = 90°, γ = 120°
Molecular shape	Trigonal prismatic (center at C)
Thermochemistry
Heat capacity (C)	39.8 J/(mol·K)
Std molar; entropy (S⦵298)	32.1 J/mol·K
Related compounds
Other anions	Tungsten boride; Tungsten nitride
Other cations	Molybdenum carbide; Titanium carbide; Silicon carbide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering for use in industrial machinery, cutting tools, chisels, abrasives, armor-piercing shells and jewelry.

Tungsten carbide is approximately three times as stiff as steel, with a Young's modulus of approximately 530–700 GPa,^[4]^[7]^[8]^[9] and is twice as dense as steel. It is comparable with corundum (α-Al
₂O
₃) in hardness and can be polished and finished only with abrasives of superior hardness such as cubic boron nitride and diamond powder, wheels and compounds.

^ "Tungsten carbide". GESTIS Substance Database. Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung. Archived from the original on 19 August 2023. Retrieved 19 August 2023.
^ ^a ^b Cite error: The named reference shthcc was invoked but never defined (see the help page).
^ ^a ^b ^c Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.96. ISBN 1-4398-5511-0.
^ ^a ^b ^c Blau, Peter J. (2003). Wear of Materials. Elsevier. p. 1345. ISBN 978-0-08-044301-0.
^ ^a ^b ^c ^d Kurlov, p. 22
^ Cite error: The named reference Wells was invoked but never defined (see the help page).
^ Cite error: The named reference Kurlov3 was invoked but never defined (see the help page).
^ Cite error: The named reference Groover2010 was invoked but never defined (see the help page).
^ Cite error: The named reference Cardarelli2008 was invoked but never defined (see the help page).

[1] "Tungsten carbide". GESTIS Substance Database. Institut für Arbeitsschutz der Deutschen Gesetzlichen Unfallversicherung. Archived from the original on 19 August 2023. Retrieved 19 August 2023.

[shthcc-2] Cite error: The named reference shthcc was invoked but never defined (see the help page).

[crc-3] Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). Boca Raton, FL: CRC Press. p. 4.96. ISBN 1-4398-5511-0.

[Blau2003-4] Blau, Peter J. (2003). Wear of Materials. Elsevier. p. 1345. ISBN 978-0-08-044301-0.

[str-5] Kurlov, p. 22

[Wells-6] Cite error: The named reference Wells was invoked but never defined (see the help page).

[Kurlov3-7] Cite error: The named reference Kurlov3 was invoked but never defined (see the help page).

[Groover2010-8] Cite error: The named reference Groover2010 was invoked but never defined (see the help page).

[Cardarelli2008-9] Cite error: The named reference Cardarelli2008 was invoked but never defined (see the help page).

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Names

IUPAC name Tungsten carbide
Other names Tungsten(IV) carbide Tungsten tetracarbide
Identifiers
CAS Number	12070-12-1^Y
3D model (JSmol)	(W⁺≡C⁻): Interactive image
ChemSpider	2006424
ECHA InfoCard	100.031.918
EC Number	235-123-0
PubChem CID	2724274 (W⁺≡C⁻)
RTECS number	YO7250000
UNII	PKZ44S724L^Y
UN number	3178
CompTox Dashboard (EPA)	DTXSID4029305
InChI InChI=1S/C.W/q-1;+1^N Key: UONOETXJSWQNOL-UHFFFAOYSA-N^N
SMILES (W⁺≡C⁻): [C-]#[W+]
Properties
Chemical formula	WC
Molar mass	195.85 g·mol⁻¹
Appearance	Grey-black lustrous solid
Density	15.6 g/cm³^[1]
Melting point	2,785–2,830 °C (5,045–5,126 °F; 3,058–3,103 K)^[3]^[2]
Boiling point	6,000 °C (10,830 °F; 6,270 K) at 760 mmHg^[2]
Solubility in water	Insoluble
Solubility	Soluble in HNO ₃, HF^[3]
Magnetic susceptibility (χ)	1·10⁻⁵ cm³/mol^[3]
Thermal conductivity	110 W/(m·K)^[4]
Structure
Crystal structure	Hexagonal, hP2^[5]
Space group	P6m2, No. 187^[5]
Point group	6m2^[5]
Lattice constant	a = 2.906 Å, c = 2.837 Å^[5] α = 90°, β = 90°, γ = 120°
Molecular shape	Trigonal prismatic (center at C)^[6]
Thermochemistry
Heat capacity (C)	39.8 J/(mol·K)^[4]
Std molar entropy (S^⦵₂₉₈)	32.1 J/mol·K
Related compounds
Other anions	Tungsten boride Tungsten nitride
Other cations	Molybdenum carbide Titanium carbide Silicon carbide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references