冷拔異型鋼管化學成分及機械性能表
GB/T 3094-2000 |
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| Steel grade | Chemical composition(%) |
Mechanical properties （heat treated condition） | |||||||||
C |
Mn |
Si |
S |
P |
Cr |
Ni |
Cu |
Tensile Strength |
Yield Point |
Elongation |
|
No less than |
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Rm |
ReH2 |
A5 |
|||||||||
N/mm2 |
N/mm2 |
% |
|||||||||
10 |
0.07～0.13 |
0.35～0.65 |
0.17～0.37 |
≤0.035 |
≤0.035 |
≤0.15 |
≤0.30 |
≤0.25 |
≥335 |
≥205 |
≥24 |
20 |
0.17～0.23 |
0.35～0.65 |
0.17～0.37 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.30 |
≤0.25 |
≥390 |
≥245 |
≥20 |
35 |
0.32～0.39 |
0.50～0.80 |
0.17～0.37 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.30 |
≤0.25 |
≥510 |
≥305 |
≥17 |
45 |
0.42～0.50 |
0.50～0.80 |
0.17～0.37 |
≤0.035 |
≤0.035 |
≤0.25 |
≤0.30 |
≤0.25 |
≥590 |
≥335 |
≥14 |
Q345(A～E) |
≤0.20 |
1.00～1.60 |
≤0.55 |
≤0.035 |
≤0.035 |
-- |
-- |
-- |
≥510 |
≥345 |
≥21 |