| 级别 | 厚度 |
| A、B | 1.25in.(32mm) |
| H、S | 2in.(50mm) |
| P | 4in.(100mm) |
| F | 2.50in.(65mm) |
| E、Q | 6in.(150mm) |
| 元素 | 成分,% | ||||||||
| 级别A | 级别B | 级别E | 级别F | 级别H | 级别P | 级别Q | 级别S | ||
| C | 熔炼分析 | 0.15~0.21 | 0.15~0.21 | 0.12~1.20 | 0.10~0.20 | 0.12~0.21 | 0.12~0.21 | 0.14~0.21 | 0.10~0.20 |
| 成品分析 | 0.13~0.23 | 0.13~0.23 | 0.10~1.22 | 0.08~0.22 | 0.10~0.23 | 0.10~0.23 | 0.12~0.23 | 0.10~0.22 | |
| Mn | 熔炼分析 | 0.80~1.10 | 0.70~1.00 | 0.40~0.70 | 0.60~1.00 | 0.95~1.30 | 0.45~0.70 | 0.95~1.30 | 1.10~1.50 |
| 成品分析 | 0.74~1.20 | 0.64~1.10 | 0.35~0.78 | 0.55~1.10 | 0.87~1.41 | 0.40~0.78 | 0.87~01.41 | 1.02~1.62 | |
| P①,≤ | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | |
| S①,≤ | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | 0.035 | |
| Si | 熔炼分析 | 0.40~0.80 | 0.15~0.35 | 0.10~00.40 | 0.15~0.35 | 0.15~0.35 | 0.20~0.35 | 0.15~0.35 | 0.15~0.40 |
| 成品分析 | 0.34~0.86 | 0.13~0.37 | 0.08~0.45 | 0.13~0.37 | 0.13~0.37 | 0.18~0.37 | 0.13~0.37 | 0.13~0.45 | |
| Ni | 熔炼分析 | ... | ... | ... | 0.70~1.00 | 0.30~0.70 | 1.20~1.50 | 1.20~1.50 | ... |
| 成品分析 | ... | ... | ... | 0.67~1.03 | 0.27~0.73 | 1.15~1.55 | 1.15~1.55 | ... | |
| Cr | 熔炼分析 | 0.50~0.80 | 0.40~0.65 | 1.40~2.00 | 0.40~0.65 | 0.40~0.65 | 0.85~1.20 | 1.00~1.50 | ... |
| 成品分析 | 0.46~0.84 | 0.36~0.69 | 1.34~2.06 | 0.36~0.69 | 0.36~0.69 | 0.79~1.26 | 0.94~1.56 | ... | |
| Mo | 熔炼分析 | 0.18~0.28 | 0.15~0.25 | 0.40~00.60 | 0.40~0.60 | 0.20~0.30 | 0.45~0.60 | 0.40~0.60 | 0.10~0.35 |
| 成品分析 | 0.15~0.31 | 0.12~0.28 | 0.36~0.64 | 0.36~0.64 | 0.17~0.33 | 0.41~0.64 | 0.36~0.64 | 0.10~0.38 | |
| B | ≤0.0025 | 0.0005~0.005 | 0.001~0.005 | 0.0005~0.006 | ≥0.0005 | 0.001~0.005 | ... | ... | |
| V | 熔炼分析 | ... | 0.03~0.08 | ② | 0.03~0.08 | 0.03~0.08 | ... | 0.03~0.08 | ... |
| 成品分析 | ... | 0.02~0.09 | ... | 0.02~0.09 | 0.02~0.09 | ... | 0.02~0.09 | ... | |
| Ti | 熔炼分析 | ... | 0.01~0.03 | 0.01~0.10 | ... | ... | ... | ... | 0.06 |
| 成品分析 | ... | 0.01~0.04 | 0.005~0.11 | ... | ... | ... | ... | 0.07 | |
| Zr | 熔炼分析 | 0.05~0.15③ | ... | ... | ... | ... | ... | ... | ... |
| 成品分析 | 0.04~0.16 | ... | ... | ... | ... | ... | ... | ... | |
| Cu | 熔炼分析 | ... | ... | ... | 0.15~0.50 | ... | ... | ... | ... |
| 成品分析 | ... | ... | ... | 0.12~0.53 | ... | ... | ... | ... | |
| Nb | 熔炼分析 | ... | ... | ... | ... | ... | ... | ... | 0.06 |
| 成品分析 | ... | ... | ... | ... | ... | ... | ... | 0.07 | |
| 项目 | 板厚不大于2.5in.(65mm) | 板厚大于2.5~6in.(65mm~150mm) | |
| 抗拉强度,ksi(MPa) | 115~135(795~930) | 105~135(725~930) | |
| 屈服强度,ksi(MPa) | ≥100(690) | ≥90(620) | |
| 伸长率(标距2in.或50mm)① | ≥16 | ≥14 | |
| 断面收缩率,% | 矩形试样 | ≥35 | ... |
| 圆形式样 | ≥45 | ≥45 | |
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