United States · API
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API 2W — Specification for steel plates for offshore structures,produced by thermo-mechanical control processing (tmcp) fifth edition; effective date:june 2007
Chemical composition
wt% · log scale- min – max range
- typical value
Mechanical properties
value range by conditionChemical composition
| Element | min | max | Similar | Remarks |
|---|---|---|---|---|
| Al | 0.02 | 0.06 | ||
| C | 0.16 | |||
| Cb | 0.03 | |||
| Cr | 0.25 | |||
| Cu | 0.35 | |||
| Mn | 0.9 | 1.35 | ||
| Mo | 0.08 | |||
| N | 0.012 | |||
| Ni | 0.75 | |||
| P | 0.03 | |||
| S | 0.01 | |||
| Si | 0.05 | 0.5 | ||
| Ti | 0.003 | 0.02 |
Mechanical properties
| Heat treatment / condition | Yield strength | Tensile strength | Elongation | Reduction of area | Impact energy | Hardness |
|---|---|---|---|---|---|---|
| Plates, , <= 25 mm | 290–462 | ≥427 | ≥24 | ≥34 |