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???	???	????????MPA??	????????MPA??
ASTM A106	A	??330	??205
	B	??415	??240
	C	??485	??275

???	???	??????
		C	Si	Mn	P	S	Cr	Mo	Cu	Ni	V
ASTM A106	A	??0.25	??0.10	0.27~0.93	??0.035	??0.035	??0.40	??0.15	??0.40	??0.40	??0.08
	B	??0.30	??0.10	0.29??1.06	??0.035	??0.035	??0.40	??0.15	??0.40	??0.40	??0.08
	C	??0.35	??0.10	0.29??1.06	??0.35	??0.35	??0.40	??0.15	??0.40	??0.40	??0.08

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???	???/???????(Mpa)		???????(Mpa)	????(%)
5310-95	20G	410~550	?? 245	?? 24
	25MnG	?? 415	?? 240	?? 22
	15MoG	450~600	?? 270	?? 22
	15CrMoG	440~640	?? 235	?? 21
	12Cr2MoG	450~600	?? 280	?? 20
	12Cr1MoVG	470~640	?? 255	?? 21

???	???	??????
		C	Si	Mn	P	S	Cr	Mo	Cu	Ni
GB5310	20G	0.17-0.24	0.17-0.37	0.35-0.65	??0.030	??0.030	/	/	??0.20	??0.25	/
	20MnG	0.17-0.24	0.17-0.37	0.70-1.00	??0.030	??0.030	/	/	??0.20	??0.25	/
	15MoG	0.12-0.18	0.17-0.37	0.40-0.80	??0.030	??0.030	/	0.25-0.35	??0.20	??0.30	/
	15CrMoG	0.12-0.18	0.17-0.37	0.40-0.70	??0.030	??0.030	0.80-1.10	0.40-0.55	??0.20	??0.30	/
	12Cr2MoG	0.08-0.15	??0.50	0.40-0.70	??0.030	??0.030	2.00-2.50	0.90-1.20	??0.20	??0.30	/
	12Cr1MoVG	0.08-0.15	0.17-0.37	0.40-0.70	??0.030	??0.030	0.90-1.20	0.25-0.35	??0.20	??0.30	0.15-0.35

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