Heat Treatment
Wrought forms of HASTELLOY^® C-22^® alloy are furnished in the solution heat-treated condition unless otherwise specified. The standard solution heat treatment consists of heating at 2050°F (1121°C) followed by rapid air cooling or water quenching.

Parts which have been hot formed or severely cold formed should be solution heat-treated prior to further fabrication or installation.

Forming
C-22 alloy has excellent forming characteristics. Cold forming is the preferred method of forming. Because of its good ductility, it can easily be cold-worked. The alloy is generally stiffer than the austenitic stainless steels. Therefore, more energy is required during cold forming. For further information, please consult the Haynes publication H-2010.

Formability

Form	Condition	HASTELLOY Alloys	Average Olsen Cup Depth
			in.	mm
Sheet, 0.028 in. (0.71mm) thick	Heat-treated at 2050°F (1121°C), Rapid Quenched	C-22	0.49	12.4
		C-276	0.48	12.2
Sheet, 0.028 in. (0.71mm) thick	Aged at 1600°F (871°C), for 1000 hrs.	C-22	0.49	12.4
		C-276	0.48	12.2
Sheet, 0.028 in. (0.71mm) thick	Cold worked 33%	C-22	0.49	12.4
		C-276	0.48	12.2
Sheet, 0.028 in. (0.71mm) thick	Cold worked 33% and Aged at 932°F (500°C) for 100 hrs.	C-22	0.49	12.4
		C-276	0.48	12.2

Average Room Temperature Tensile Data, Cold-Worked Sheet

Cold-Worked %	Ultimate Tensile Strength Ksi*	Yield Strength at 0.2% Offset, Ksi*	Elongiation in 2 in. (50.8 mm), %
0	116	59	57
10	130	93	39
20	151	127	23
30	170	151	13
40	192	174	9
50	206	183	10
60	222	202	7

Average Room Temperature Tensile Data, Cold-Worked and Aged** Sheet

Cold-Worked %	Ultimate Tensile Strength Ksi*	Yield Strength at 0.2% Offset, Ksi*	Elongiation in 2 in. (50.8 mm), %
0	116	62	73
10	141	110	42
20	165	141	28
40	206	193	15
60	250	244	6
Ksi can be converted to MPa (Megapascals) by multiplying by 6.895. *Aged 100 hours at 932°F (500°C).

Average Room Temperature Hardness, Aged Sheet*

Aging Temperature,		Cold Reduction, %
°F	(°C)	0	10	20	30	40	50	60
No Aging		R_B 90	R_C 24	R_C 33	R_C 36	R_C 40	R_C 41	R_C 43
940	(504)	R_B 94	R_C 24	R_C 32	R_C 37	R_C 42	R_C 45	R_C 48
1010	(543)	R_B 95	R_C 26	R_C 32	R_C 41	R_C 44	R_C 45	R_C 48
1070	(577)	R_B 95	R_C 28	R_C 32	R_C 39	R_C 40	R_C 44	R_C 48
1130	(610)	R_B 93	R_C 22	R_C 27	R_C 33	R_C 37	R_C 41	R_C 45
1200	(649)	R_B 93	R_C 21	R_C 27	R_C 33	R_C 37	R_C 41	R_C 45
1260	(682)	R_B 95	R_C 20	R_C 25	R_C 31	R_C 36	R_C 41	R_C 44
1510	(821)	R_B 94	R_C 21	R_C 26	R_C 32	R_C 35	R_C 36	R_C 37
1770	(966)	R_B 93	R_C 21	R_C 21	R_C 21	R_C 23	R_C 25	R_C 25
1980	(1082)	R_B 83	R_B 83	R_B 84	R_B 84	R_B 83	R_B 83	R_B 80
*Aged 100 hours

Average Impact Strength, Aged Plate

Aging Temperature,		Aging Time, hrs.		V-Notch Impact Strength -320°F (-196°C)
°F	(°C)	Aging Time, hrs.		ft.-lb.	Joules
1000	(538)		1	259*	351*
			10	259*	351*
			100	259*	351*

1200	(649)		1	259*	351*
			10	259*	351*
			100	99	134

1400	(760)		1	259*	351*
			10	84	114
			100	28	38

1600	(871)		1	118	160
			10	38	52
			100	3	4

1800	(982)		1	114	155
			10	44	60
			100	12	16
*Specimens did not break

Haynes International, Inc. 800-354-0806 765-456-6012

HASTELLOY® C-22® alloy Information*

HASTELLOY^® C-22^® alloy Information*