〔12〕压力容器用淬火及回火之锰钼钢及锰钼镍合金钢板
（Mn-Mo and Mn-Mo-Ni Alloy Steel Plates Quenched and Tempered for Pressure Vessels)
标准代号	规格号码	记号	化学成分（%)Chemical composition										拉伸试验 Tensile requirements
			C	Si	Mn	P	S	Ni	Mo	Cu	V	Al	降伏强度(Mpa)	抗拉强度(Mpa)	伸长度(%)
CNS	8973	SQV1A	≦0.25	0.15-0.30	1.15-1.5	≦0.035	≦0.04	-	0.45-0.60	-	-	-	≧345	550-690	≧18
JIS	G3120	SQV1A	≦0.25	0.15-0.30	1.15-1.5	≦0.035	≦0.04	-	0.45-0.60	-	-	-	≧345	550-690	≧18
ASTM	A533	Type A Class 1	≦0.25	0.15-0.40	1.15-1.5	≦0.035	≦0.035	-	0.45-0.60	-	-	-	≧345	550-690	≧18
CNS	8973	AQV1B	≦0.25	0.15-0.30	1.15-1.5	≦0.035	≦0.04	-	0.45-0.60	-	-	-	≧480	620-790	≧16
JIS	G3120	AQV1B	≦0.25	0.15-0.30	1.15-1.5	≦0.035	≦0.04	-	0.45-0.60	-	-	-	≧480	620-790	≧16
ASTM	A533	Type A Class 2	≦0.25	0.15-0.40	1.15-1.5	≦0.035	≦0.035	0.4-0.7	0.45-0.60	-	-	-	≧485	620-795	≧16
CNS	8973	SQV2A	≦0.25	0.15-0.30	0.15-1.50	≦0.035	≦0.04	0.4-0.7	0.45-0.60	-	-	-	≧345	550-690	≧18
JIS	G3120	SQV2A	≦0.25	0.15-0.30	0.15-1.50	≦0.035	≦0.04	0.4-0.7	0.45-0.60	-	-	-	≧345	550-690	≧18
ASTM	A533	Type B Class 1	≦0.25	0.15-0.40	1.15-1.50	≦0.035	≦0.04	0.4-0.7	0.45-0.60	-	-	-	≧345	550-690	≧18
VDER	SEW-640	20MnMo-Ni55	0.17-0.23	≦0.35	1.0-1.5	≦0.2	≦0.2	0.4-0.8	0.45-0.60	≦0.18	≦0.03	≦0.05	-	-	-
CNS	8973	SQV2B	≦0.25	0.15-0.30	0.15-1.50	≦0.035	≦0.04	0.4-0.7	0.45-0.60	-	-	-	≧480	620-790	≧16
JIS	G3120	SQV2B	≦0.25	0.15-0.30	0.15-1.50	≦0.035	≦0.04	0.4-0.7	0.45-0.60	-	-	-	≧480	620-790	≧16
ASTM	A533	Type B Class 2	≦0.25	0.15-0.40	1.15-1.50	≦0.035	≦0.035	0.4-0.7	0.45-0.60	-	-	-	≧485	620-795	≧16
CNS	8973	SQV3A	≦0.25	0.15-0.30	0.15-1.50	≦0.035	≦0.04	0.7-1.0	0.45-0.60	-	-	-	≧345	550-690	≧18
JIS	G3120	SQV3A	≦0.25	0.15-0.30	0.15-1.50	≦0.035	≦0.04	0.7-1.0	0.45-0.60	-	-	-	≧345	550-690	≧18
ASTM	A533	Type C Class 1	≦0.25	0.15-0.30	1.15-1.50	≦0.035	≦0.035	0.7-1.0	0.45-0.60	-	-	-	≧345	550-690	≧18
CNS	8973	SQV3B	≦0.25	0.15-0.30	0.15-1.50	≦0.035	≦0.04	0.7-1.0	0.45-0.60	-	-	-	≧480	620-790	≧16
JIS	G3120	SQV3B	≦0.25	0.15-0.30	0.15-1.50	≦0.035	≦0.04	0.7-1.0	0.45-0.60	-	-	-	≧480	620-790	≧16
ASTM	A533	Type C Class 2	≦0.25	0.15-0.40	1.15-1.50	≦0.035	≦0.035	0.7-1.0	0.45-0.60	-	-	-	≧485	620-795	≧16