Minimum steel grade by plate thickness and structural category (primary / secondary / tertiary) per IACS UR W11.
Formula
$$ \text{Grade} = f(\text{thickness}, \text{category}) $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $A / B / D / E$ | Charpy test temperatures | - | IACS UR W11 |
Sources
- IACS UR W11 - Normal and higher-strength hull steels.