〔40〕一般用途之碳钢锻件
（Carbon Steel Forgings for General use)
标准代号	规格号码	记号	化学成分（%)Chemical composition											拉伸试验 Tensile requirements				硬度（HB)
			C	Si	Mn	P	S	Ni	Cr	Mo	Cu	N	Co	厚度（mm)	降伏强度(Mpa)	抗拉强度(Mpa)	伸长度(%)
CNS	2673	SF35A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧175	340-440	≧27	≧90
JIS	G3201	SF340A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧175	340-440	≧27	≧90
ASTM	A668	Class A	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	≦500	-	≧325	-	≦183
DIN	17100	St37-3	-	-	-	≦0.04	≦0.04	-	-	-	-	-	-	40-100	≧215	340-470	-	-
CNS	2673	SF40A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧195	390-490	≧25	≧105
JIS	G3201	SF390A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧195	390-490	≧25	≧105
ASTM	A668	Class B	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	≦500	≧205	≧415	-	120-174
CNS	2673	SF45A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧225	440-540	≦24	≧121
JIS	G3201	SF440A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧225	440-540	≦24	≧121
ASTM	A668M	Class C	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	≦305	≧230	≧455	-	137-183
ASTM	A668M	Class C	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	≦500	≧230	≧455	-	139-183
DIN	17100	St44-3	≦0.2	-	-	≦0.04	≦0.04	-	-	-	-	-	-	40-63	≧255	410-540	-	-
DIN	17100	St44-3	≦0.2	-	-	≦0.04	≦0.04	-	-	-	-	-	-	63-80	≧245	410-540	-	-
DIN	17100	St44-3	≦0.2	-	-	≦0.04	≦0.04	-	-	-	-	-	-	80-100	≧235	410-540	-	-
CNS	2673	SF50A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧245	490-590	≦22	≧134
JIS	G3201	SF490A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧245	490-590	≦22	≧134
ASTM	A105	-	≦0.35	≦0.35	0.60-1.05	≦0.04	≦0.05	≦0.4	≦0.3	≦0.12	≦0.4	≦0.03	≦0.02	-	≧250	≧485	-	≦187
DIN	17100	St52-3	≦0.22	-	-	≦0.04	≦0.04	-	-	-	-	-	-	40-63	≧335	490-630	-	-
DIN	17100	St52-3	≦0.22	-	-	≦0.04	≦0.04	-	-	-	-	-	-	63-80	≧325	490-630	-	-
DIN	17100	St52-3	≦0.22	-	-	≦0.04	≦0.04	-	-	-	-	-	-	80-100	≧315	490-630	-	-
CNS	4693	SF55A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧275	540-640	≧20	≧152
JIS	G3201	SF540A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧275	540-640	≧20	≧152
ASTM	A668	Class D	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	-	≧260	≧515	-	149-207
CNS	2673	SF55B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	≦100	≧335	540-690	≧21	≧152
JIS	G3201	SF540B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	≦100	≧335	540-690	≧21	≧152
CNS	2673	SF60A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧295	590-690	≧18	≧167
JIS	G3201	SF590A	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	-	≧295	590-690	≧18	≧167
ASTM	A668	Class E	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	≦203	≧303	≧585	-	174-217
CNS	2673	SF60B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	≦100	≧263	590-740	≦43	≧167
CNS	2673	SF60B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	100-250	≧333	590-740	≦40	≧167
CNS	2673	SF60B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	250-400	≧323	590-740	≦38	≧167
JIS	G3201	SF590B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	≦100	≧360	590-740	≦43	≧167
JIS	G3201	SF590B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	100-250	≧335	590-740	≦40	≧167
JIS	G3201	SF590B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	250-400	≧325	590-740	≦38	≧167
ASTM	A668	Class F	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	≦102	≧380	≦620	-	187-235
ASTM	A668	Class F	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	102-178	≧345	≧585	-	174-217
ASTM	A668	Class F	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	178-254	≧345	≧585	-	174-217
ASTM	A668	Class F	-	-	≦1.35	≦0.05	≦0.05	-	-	-	-	-	-	254-508	≧330	≧565	-	174-217
CNS	2673	SF65B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	≦100	≧390	640-780	≦16	≧183
CNS	2673	SF65B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	100-250	≧390	640-780	≦16	≧183
CNS	2673	SF65B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	250-400	≧345	640-780	≦15	≧183
JIS	G3201	SF640B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	≦100	≧390	640-780	-	≧183
JIS	G3201	SF640B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	100-250	≧360	640-780	-	≧183
JIS	G3201	SF640B	≦0.6	0.15-0.50	0.3-1.2	≦0.03	≦0.035	-	-	-	-	-	-	250-400	≧325	640-780	-	≧183