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?????????-20#GB6479??????ù???-???????????????

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???????	??(D)		?????(S)
??ι?	?????(mm)	???????(mm)	?????(mm)	???????(mm)
	??30-50	??0.3	??30	??10%
	??50-219	??0.8%
??????	??219	??1.0%	??20	??10%

???	???	???????(MPa)	???????(MPa)	????(%)	?????(J)	???3??Akv
GB6479	10	335-490	??205	??24	/	??20???18
	20	410-550	??245	??24	??39	??20???18
	16Mn	490-670	??320	??21	??47	??40???21
	10MoWVNb	470-670	??295	??19	??62
	15CrMo	440-640	??235	??21	??47
	1Cr5Mo	390-590	??195	??22	??94
	12 Cr2Mo	450-600	??280	??20	??38

???	???	??????(%)
		C	Si	Mn	P	S	Cr	Mo	Ni
GB6479	10	0.07-0.14	0.17-0.37	0.35-0.65	??0.030	??0.030	/	/	/
	20	0.17-0.24	0.17-0.37	0.35-0.65	??0.030	??0.030	/	/	/
	16Mn	0.12-0.20	0.20-0.60	1.20-1.60	??0.030	??0.030
	10MoWVNb	0.07-0.13	0.50-0.80	0.50-0.80	??0.030	??0.030	/	0.60-0.90	/
	15CrMo	0.12-0.18	0.17-0.37	0.40-0.70	??0.030	??0.030	0.80-1.10	0.40-0.55	/
	1Cr5Mo	??0.15	??0.50	??0.60	??0.030	??0.030	4.00-6.00	0.45-0.60	??0.60
	12Cr2Mo	0.80-0.15	??0.50	0.40-0.70	??0.030	??0.030	2.0-2.50	0.90-1.20