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???????????????????????????????????????????????????????ˉ????????????????????????????????????β???????????????????? ???????????????????????????????????????????????????????β?????????????β??????? ????????????????????Ρ????????ε?????????????????????760mm??????????????? ??β???б??????ε??????????????????????а???????????????????塢??????????????д??????????????????????????????????????????????????
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????10# 0.07~0.13 0.17~0.37 0.35~0.65 ??0.035 ??0.035
20# 0.17~0.23 0.17~0.37 0.35~0.65 ??0.035 ??0.035
????35# 0.32~0.39 0.17~0.37 0.35~0.65 ??0.035 ??0.035
????45# 0.42~0.50 0.17~0.37 0.50~0.80 ??0.035 ??0.035
????40cr 0.37~0.44 0.17~0.37 0.50~0.80 ??0.035 ??0.035 0.08~1.10
????25Mn 0.22~0.2 0.17~0.37 0.70~1.00 ??0.035 ??0.035 ??0.25
????37Mn5 0.30~0.39 0.15~0.30 1.20~1.50 ??0.015 ??0.020
??б??
GB/T3639
GB/T8713
DIN2391-2
HK15-2000
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