?????????-?????????????????-20#????????????????
???????????????
??б????
?й??????? GB/T8163
?????
????????????????????塣
??????????????
10#??20#??Q345
??е?????
|
??????? |
??(D) |
?????(S) |
|
??ι? |
?????(mm) |
???????(mm) |
?????(mm) |
???????(mm) |
|
??30??50 |
??0.3 |
??30 |
??10?? |
|
??50??219 |
??0.8?? |
|
|
|
?????? |
??219 |
??1.0?? |
??20 |
??10?? |
????????
|
??? |
??? |
???????(Mpa) |
???????(Mpa) |
????(??) |
|
GB/T8163 |
10 |
335??475 |
??205 |
??24 |
|
20 |
410??550 |
??245 |
??20 |
|
Q345 |
490??665 |
??325 |
??21 |
???????
|
??? |
??? |
?????? |
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Cu |
|
GB/T8163 |
10 |
0.07??0.14 |
0.17??0.37 |
0.35??0.65 |
??0.035 |
??0.035 |
??0.15 |
??0.25 |
??0.25 |
|
20 |
0.17??0.24 |
0.17??0.37 |
0.35??0.65 |
??0.035 |
??0.035 |
??0.25 |
??0.25 |
??0.25 |
|
Q345 |
0.12??0.20 |
0.20??0.55 |
1.20??1.60 |
??0.045 |
??0.045 |
/ |
/ |
/ |
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|
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