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Compound	Formula	Decomposition or softening point. ํC	Remarks
silicon carbide	SiC	2500-2800*	high thermal conductivity very hard resistant to oxidation up to 1600 ํC
boron carbide	B4C	2450	Very hard (9.3 Mohs).
Zirconium carbide	ZrC	3550	Stable in nitrogen or hydrogen.
Hafnium carbide	HfC	3900	Very high use linit in vacuum ,oxidizes above 800 ํC
Tantalum carbide	TaC	3900	Same properties as HFC.
Graphite	C	3650	Good hot strength.Not resistant to oxidation.
Zirconium boride	ZrB	3040	Starts to oxidize above 900 ํC.
Titanium boride	TiB	2940	Can be used for short period up to 1400 ํC
Titanium nitride	TiN	2940	Starts to oxidize above 1100 ํC
Zirconium nitride	ZrN	2890	Starts to oxidize above 1100 ํC
Molybdenum disilicide.	MoSi2	2105	Resistant to oxdation to 1820 ํC Electrical conductor. used for heation elements

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