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9948????????|20#????????|?????????????

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????GB9948-2006???й???????????????
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????10??20??15CrMo??1Cr2Mo??1Cr5Mo??
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????10??20<??????????????ι?????>
????15CrMo<??????????+?????ι?????+???>
????1Cr2Mo<??????????+?????ι?????+???>
????1Cr5Mo<???>
?????????????????????????-???X???X0.02466=KG/M
?????????????-???X???X0.02486=KG/M
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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??

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??????? ??? ????????MPa?? ????????MPa?? ????????? ???????J?? ????????HB?? ??????
GB9948 10 330??490 ??205 ??24 / / ????
20 410??550 ??245 ??21 ??39 / ????
15CrMo  440??640 ??235 ??21 ??47 ??170 ???????
1Cr2Mo  ??390 ??175 ??22 ??92 ??179 ???????
1Cr5Mo  ??390 ??195 ??22 ??92 ??187 ???

??????????:
??????? ??? ???????????
C Si Mn P S Cr  Mo  Ni
GB9948 10 0.07??0.14 0.17??0.37 0.35??0.65 ??0.035 ??0.035 ??0.15 / ??0.25
20 0.17??0.24 0.17??0.37 0.35??0.65 ??0.035 ??0.035 ??0.25 / ??0.25
15CrMo  0.12??0.18 0.17??0.37 0.40??0.70 ??0.035 ??0.035 0.80??1.10 0.40??0.55 ??0.30
1Cr2Mo  ??0.15 0.50??1.00 0.30??0.60 ??0.035 ??0.030 2.15??2.85 0.45??0.65 /
1Cr5Mo  ??0.15 ??0.50 ??0.60 ??0.035 ??0.030 4.00??6.00 0.45??0.60 ??0.60