|
standard |
type of steel | C | Si | Mn | P | S | Cu | Ni | Cr | Mo | V |
| ASTM A106 | A | ≤0.25 | / | ≤0.95 | 0.05 | 0.045 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
| B | ≤0.30 | / | ≤1.20 | 0.05 | 0.06 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 | |
| A | ≤0.25 | ≥0.10 | 0.27-0.93 | 0.035 | 0.035 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 | |
| B | ≤0.30 | ≥0.10 | 0.29-1.06 | 0.035 | 0.035 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 | |
| C | ≤0.35 | ≥0.10 | 0.29-1.06 | 0.035 | 0.035 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 | |
| ASTM A53 | A | ≤0.25 | / | ≤0.95 | ≤0.05 | ≤0.06 | ≤0.04 | ≤0.04 | ≤0.04 | ≤0.15 | ≤0.08 |
| B | ≤0.35 | / | ≤1.20 | ≤0.05 | ≤0.06 | ≤0.04 | ≤0.04 | ≤0.04 | ≤0.15 | ≤0.08 | |
| DIN 1629 | St35 | ≤0.18 | 0.15-0.35 | 0.35-0.65 | 0.035 | 0.25 | 0.25 | 0.25 | / | / | |
| St45 | ≤0.25 | 0.15-0.35 | 0.50-0.80 | 0.035 | 0.25 | 0.25 | 0.25 | / | / | ||
| St55 | 0.33-0.41 | 0.15-0.35 | 0.50-0.80 | 0.035 | 0.25 | 0.25 | 0.25 | / | / | ||
| St52 | ≤0.20 | ≤0.55 | ≤1.50 | 0.035 | 0.25 | 0.25 | 0.25 | / | / | ||
|
GB/T 8162 GB/T 8163 |
10 |
0.07-0.14 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.25 | 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 | / | / | |
| 35 | 0.32-0.39 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / | |
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.25 | 0.25 | 0.25 | / | / | |
|
Q345 (16Mn) |
0.12-0.20 |
0.20-0.55 | 1.20-1.60 | 0.045 | 0.045 | 0.25 | 0.25 | 0.25 | / | / | |
| GB/T 3087 | 10 | 0.07-0.14 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 | 0.25 | 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 (16Mn) |
0.12-0.20 |
0.20-0.55 | 1.20-1.60 | 0.045 | 0.045 | 0.25 | 0.25 | 0.25 | / | / |