Appendix

Compositions of Selected Superalloys

			Approximate Nominal Composition in Weight Percent
Alloy	Al	B	C	Co	Cr	Hf	Mo	Ni	Ta	Ti	W	Zr	Others
*Nickel-Base Polycrystalline*
Waspaloy	1.2	0.005	0.07	13.5	19.5		4.2	Bal		3		0.09	Fe 15.8
Hatelloy X	2		0.15	1.5	22		9	Bal			0.6		Fe 15.8
IN 718	0.05		0.04		19		3	Bal		0.9			Fe 18, Nb 5, Cu 0.25
IN 792	3.2	0.02	0.2	9	13		2	Bal		4.2	4	0.1	Nb 2
IN 100	5.5	0.015	0.17	15	9.5		3	Bal		4.8		0.06	V 1
B-1900 + Hf	6	0.015	0.11	10	8	1.2	6	Bal	4.3	1		0.08
Ren 80	3	0.015	0.17	9.5	14		4	Bal		5	4	0.03
Ren 80 + Hf	3	0.015	0.08	9.5	14		4	Bal		4.8	4	0.02	Hf 0.75
IN 738	3.4	0.01	0.17	8.5	16		1.7	Bal	1.7	3.4	2.6	0.1	Nb 0.9
Mar-M247	5.5	0.016	0.15	10	8.4	1.4	0.6	Bal	3	1	10	0.06
DS* Mar-M247	5.5	0.015	0.15	10	8.4	1.4	0.6	Bal	3	1	10	0.06
Mar-M200	5	0.015	0.15	10	9			Bal		2	12	0.05	Nb 1
DS Mar-M200 + Hf	5	0.015	0.13	10	9	2		Bal	2		12	0.05	Nb