牌 号 |
试样方向 |
冷弯试验180° B=2aa |
|
钢材厚度(或直径)b/mm |
|||
≤60 |
﹚60~100 |
||
弯心直径d |
|||
Q195 |
纵 |
0 |
-- |
横 |
0.5a |
||
Q215 |
纵 |
0.5a |
1.5a |
横 |
a |
2a |
|
Q235 |
纵 |
a |
2a |
横 |
1.5a |
2.5a |
|
Q275 |
纵 |
1.5a |
2.5a |
横 |
2a |
3a |
|
a B为试样宽度,a为试样厚度(或直径)。 b 钢材厚度(或直径)大于100mm时,弯曲试验由双方协商确定。 |
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