Material Chemical and Physical Properties

	Carbon Steel			Steel Casting for Pressure‐ Containing Parts for low temperature services
Specification	ASTM A216			ASTM A352
Grade or Class	WCA	WCB	WCC	LCA	LCB	LCC	CA6NM
C	0.25	0.30	0.25	0.25	0.30	0.25	0.06
Si	0.60	0.60	0.60	0.60	0.60	0.60	1.00
Mn	0.70	1.00	1.20	0.70	1.00	1.20	1.00
S	0.045	0.045	0.045	0.045	0.045	0.045	0.030
P	0.040	0.040	0.040	0.040	0.040	0.040	0.040
Cu	0.30	0.30	0.30	0.30	0.30	0.30
Ni	0.50	0.50	0.50	0.50	0.50	0.50	3.50‐4.50
Cr	0.50	0.50	0.50	0.50	0.50	0.50	11.5‐14.0
Mo	0.20	0.20	0.20	0.20	0.20	0.20	0.40‐1.00
V	0.03	0.03	0.03	0.03	0.03	0.03
Pysical Properties
Tensile Strength N/mm2, Ksi				414-586	448-620	483-655	758-931
Yield Strength N/mm2@ 0.2%				207	241	276	552
Elongation in 2 in, %				165	165	152	104
Reduction of Area, %				241	241	241	241

	Stainless Steel for Pressure‐ Containing Parts
Specification	ASTM A351
Grade or Class	CF3	CF8	CF8M	CF3	CF3M	CF3MA	CF3MN	CN7M
C	0.03	0.08	0.08	0.03	0.03	0.03	0.03	0.07
Si	2.00	2.00	1.50	2.00	1.50	1.50	1.50	1.50
Mn	1.50	1.50	1.50	1.50	1.50	1.50	1.50	1.50
S	0.040	0.040	0.040	0.040	0.040	0.040	0.040	0.040
P	0.040	0.040	0.040	0.040	0.040	0.040	0.040	0.040
Cu								3.00‐4.00
Ni	8‐12	8‐11	9‐12	8‐12	9‐13	9‐13	9‐13	27.5‐30.5
Cr	17‐21	18‐21	18‐21	17‐21	17‐21	17‐21	17‐21	19‐22
Mo	0.50	0.50	2.00‐3.00	0.50	2.00‐3.00	2.00‐3.00	2.00‐3.00	2.00‐3.00
N							0.10‐0.20
Pysical Properties
Tensile Strength N/mm2	483	483	483	483	483	80	552	427
Yield Strength N/mm2@ 0.2%	207	207	207	207	207	233	255	172
Elongation in 2 in, % N/mm2	241	241	241	241	207	207	241	241