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22411182416 |
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?????????-?????245*20???????-273*20???????????? |
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245*20 |
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?????????-?????245*20???????-273*20????????????
????????????????GB/T8163-1999????????????????????????????????????
??????????????????[(??-???)*???]*0.02466=kg/?????????????
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?й??????? GB/T8163
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10#??20#??Q345
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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% |
???????
|
??? |
??? |
???????(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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???????????0510-88264321??88223334 ?????13967282625??18921237777
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| ???????417 ??????2012-2-24 ?????????? ??????? |
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