??????????????????GB??T17396??1998??
|
?????????????????GB??T17396??1998?? |
?????????????????
|
????磯mm |
???????(??) |
|
????? |
???? |
|
?? |
??1 |
??0.75 |
|
??? |
??20 |
??12.5 |
??10 |
|
>20 |
+12.5
-10 |
???
1.?????跽????????????Э?飬?????????????????????????????????????????80????
2.????????????3000-12000mm??
3.??????????????????????Χ???????????????+20mm0??????????????????1漲????п???????
????159mm????????????????????????????????????5-10mm
??>159mm???????????????????????? ????????????10-15mm
4.??????????????????1漲??
????15mm??????????????????????????????????????1.3mm??m
???>15??30mm??????????????????????????????????1.5mm??m
???>30mm??????????????????????????????????????2mm??m
(2)?????????
??????????????????????????
|
??? |
??????(????????)(??) |
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
Nb |
RE(??????) |
|
?? |
|
20 |
0.17??0.24 |
0.17??0.37 |
0.35??0.65 |
0.035 |
0.035 |
0.25 |
0.25 |
0.20 |
|
|
|
35 |
0.32??0.40 |
0.17??0.37 |
0.50??0.80 |
0.035 |
0.035 |
0.25 |
0.25 |
0.20 |
|
|
|
45 |
0.42??0.50 |
0.17??0.37 |
0.50??0.80 |
0.035 |
0.035 |
0.25 |
0.25 |
0.20 |
|
|
|
27SiMn |
0.24??0.32 |
1.10??1.40 |
1.10??1.40 |
0.035 |
0.035 |
0.030 |
0.030 |
0.030 |
|
|
|
30MnNBRE |
0.27??0.36 |
0.20??0.60 |
1.20??1.60 |
0.035 |
0.035 |
0.030 |
0.030 |
0.030 |
0.020-0.050 |
0.02-0.04 |
?????????????????????????????????????????????????????????????????????????????????????????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???
?? ? ? ?? 
