?????????-??????????????-45#????????
20#?????????????20#???????15??????????????????????????????????????????????????????????
?綃???????????????????????????С???????????????????????????????????????????????λ???????????????á??????????????????????????????? ????20#??????????????????????
????20?? ?????????GB8162-2008 GB/T8163-2008 GB3087-2008 GB9948-2006 GB5310-2008 ????????15???????????????????????????????????????????????????????????綃???????????????????????????С???????????????????????????????????????????????λ???????????????á??????????????????????????????? ??????????? ????? C ??0.17??0.24"?? Si??0.17??0.37?? Mn??0.35??0.65?? S ????0.035?? P ????0.035?? Cr????0.25?? Ni????0.25? Cu????0.25 ?????????????? ??????????? ??b (MPa)????410(42)??????? ??s (MPa)????245(25)???? ??5 (??)????25?????????? ?? (??)????5????? ??δ?????,??156HB????????磺???????25mm
45#????
?????е????????????????????????????????????????????????????á?
45??
???????????????????????450???????????????????????????????????顣
45???
?????????0.42-0.50%????????????0.17-0.37%????????????0.50-0.80%???????????<=0.035%???????????<=0.035%???????????<=0.25%???????????<=0.2545??
???0.45%?????
45#?????????????
|
168*17 |
245*44 |
|
245*8 |
273*30 |
|
245*12 |
299*31 |
|
245*14 |
299*32 |
|
245*16 |
325*40 |
|
245*25 |
351*30 |
|
245*30 |
377*30 |
|
245*40 |
|
?????????δ?????45#?????????綽?????????????????????????????????!
?????????????????????????????????????????????????????????????????????????????????????????С???????????????????????????????????????????????????????????,??????????????20#??45#??16MN??Q345??A/B/C/D/E????27SIMN??15CrMO??12Cr1MOV??10CrMO910??304??304L??316??316L??321??P11??P22??P91??T91.??й???GB8162-99?????GB8163-99????????????ù?????????GB3087-99??GB5310-85????????ˉ?ù??GB5312-8???ù??...
???????????0510-88264321??88223334 ???棺0510-88223334 ?????18921237777
|
?????λ???
?? ? ? ?? 
