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鋼組	序 號(hào)	統(tǒng)一數(shù) 字代號(hào)	牌 號(hào)	化學(xué)成分(質(zhì)量分?jǐn)?shù))(％)
				C	Si	Mn	Cr	Mo	Ni	B	V	其他
Mn	l	A00202	20Mn2	0.17-0.24	0.17-0.37	1.40-1.80
	2	A00302	30Mn2	0.27-0.34	0.17-0.37	1.40-1.80
	3	A00352	35Mn2	0.32-0.39	0.17-0.37	1.40-1.80
	4	A00402	40Mn2	0.37-0.44	0.17-0.37	1.40-1.80
	5	A00452	45Mn2	0.42-0.49	0.17-0.37	1.40-1.80
Mn	6	A00502	50Mn2	0.47-0.55	0.17-0.37	1.40-1.80
MnV	7	A01202	20MnV	0.17-0.24	0.17-0.37	1.30-.60					0.07-0.12
siMn	8	A10272	27siMn	0.24-0.32	1.10-1.40	1.10-1.40
	9	A10352	35siMn	0.32-0.40	1.10-1.40	1.10-1.40
	10	A10422	42siMn	0.39-0.45	1.10-1.40	1.10-1.40
SiMn- MoV	ll	A14202	20SiMn2MoV	0.17-0.23	0.90-1.20	2.20-2.60		0.30-0.40			0.05-0.12
	12	A14262	25SiMn2MoV	0.22-0.28	0.90-1.20	2.20-2.60		0.30-0.40			0.05-0.12
	13	A14372	37SiMn2MoV	0.33-0.39	0.60-0.90	1.60-1.90		0.40-0.50			0.05-0.12
B	14	A70402	40B	0.37-0.44	0.17-0.31	0.60-0.90				0.0005-0.0035
	15	A70452	45B	0.42-0.49	0.17-0.37	0.60-0.90				0.0005-0.0035
	16	A70602	50B	0.47-0.55	0.17-0.37	0.60-0.90				0.0005-0.0035
MnB	17	A71402	40MnB	0.37-0.44	0.17-0.37	1.10-1.40				0.0005-0.0035
	18	A71452	45MnB	0.42-0.49	0.17-0.37	1.10-1.40				0.0005-0.0035
Mn MoB	19	A72202	20MnMoB	0.16-0.22	0.17-0.37	0.90-1.20		0.20 -0.30		0.0005-0.0035
MnVB	20	A73152	15MnVB	0.12-0.18	0.17-0.37	1.20-1.60				0.0005-0.0035	0.07-0.12
	21	A73202	20MnVB	0.17-0.23	0.17-0.37	1.20-1.60				0.005-0.0035	0.07-0.12