美标ABS船用级 DH36无缝钢管热轧AH36无缝钢管88.9x6厂家
ABS AH36 / DH36 / EH36 船用钢管性能对比表
1. 化学成分（典型上限，wt%）
表格
| Grade | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| AH36 | ≤0.18 | 0.10–0.50 | 0.90–1.60 | ≤0.035 | ≤0.035 |
| DH36 | ≤0.18 | 0.10–0.50 | 0.90–1.60 | ≤0.035 | ≤0.035 |
| EH36 | ≤0.18 | 0.10–0.50 | 0.90–1.60 | ≤0.035 | ≤0.035 |
三者基础成分基本一致，差异主要在冲击温度与韧性要求，而非化学成分。
2. 力学性能对比
表格
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| Property | AH36 | DH36 | EH36 |
|---|---|---|---|
| Yield strength | ≥355 MPa | ≥355 MPa | ≥355 MPa |
| Tensile strength | 490–620 MPa | 490–620 MPa | 490–620 MPa |
| Elongation | ≥21% | ≥21% | ≥21% |
Charpy V-no
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