Properties at Cryogenic Temperatures

The austenitic stainless steels remain tough and ductile to very low temperatures. Metals such as iron and constructional steels undergo a marked decrease in ductility at lower temperatures.

COMMON CRYOGENIC TEMPERATURES:

EFFECT OF TEMPERATURE ON MODULUS OF ELASTICITY:

MECHANICAL PROPERTIES AT CRYOGENIC TEMPERATURES:

	Strength by Alloy Listed in ksi
	301	302	304	304L	3105	316	321	347
0øC
Yield	42	42	38	28	35	40	40	40
Tensile	160	120	115	98	88	90	100	100
Elong.	60%	50%	60%	58%	50%	68%	58%	60%
Charpy keyhole notch in ft. lb.	39	34	37	-	38	35	32	29
	301	302	304	304L	3105	316	321	347
-40øC
Yield	44	43	40	30	40	45	45	45
Tensile	180	135	135	115	94	105	120	115
Elong.	40%	58%	55%	55%	70%	67%	55%	58%
Charpy keyhole notch in ft. lb.	-	-	-	-	-	-	-	-
	301	302	304	304L	3105	316	321	347
-78øC
Yield	50	58	45	35	48	57	50	50
Tensile	162	164	165	138	110	120	138	136
Elong.	52%	52%	48%	50%	78%	65%	53%	52%
Charpy keyhole notch in ft. lb.	21	27	26	-	30	26	25	23
	301	302	304	304L	3105	316	321	347
-168øC
Yield	62	62	55	40	62	73	58	50
Tensile	210	210	208	175	140	160	185	180
Elong.	44%	43%	42%	44%	90%	61%	47%	45%
Charpy keyhole notch in ft. lb.	5.5	9.5	21	16	24	19	22	19
	301	302	304	304L	3105	316	321	347
-196øC
Yield	55	62	57	45	75	80	60	52
Tensile	275	225	225	192	151	180	211	195
Elong.	30%	40%	38%	42%	93%	19%	22%	19%
Charpy keyhole notch in ft. lb.	-	-	-	-	-	-	-	-
	301	302	304	304L	3105	316	321	347
-253øC
Yield	-	62	69	50	96	93	68	65
Tensile	-	258	250	220	180	230	248	230
Elong.	-	38%	27%	41%	71%	55%	34%	-
Charpy keyhole notch in ft. lb.	-	-	-	19	-	-	-	-