| 化学元素 | % | Impact 影响 |
| Carbon ( C )碳 | 0.20 max |
A= Not required. BR= 27 Joules at room temp. 要求室温下27焦耳 BO= 25 Joules at 0 deg Cel. C= 25 Joules at -20 deg Cel. |
| Manganese ( Mn )锰 | 1.60 max | |
| Sulfur ( S )硫 | 0.045 max | |
| Phosphorus ( P )磷 | 0.045 max | |
| Silicon ( Si )硅 | 0.45 max | |
| Carbon equivalent 碳当量 | 0.50 max | |
| Nitrogen ( N2 ) 氮 | 0.012 % ( 120 ppm) |
| 拉伸强度 | 540 Mpa | 所有厚度 |
| 屈服强度 | 410 Mpa | < 20 mm thickness. |
| 390 Mpa | 20-40 mm thickness | |
| 380 Mpa | > 40 mm thickness | |
| %拉伸率 | 20 % min | |
|
弯曲至25mm 厚度 Bend upto 25 mm thickness |
2T | 137/8188/0376/ |
| > 25 mm thickness | Not required |
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