AH32
Data verifiedAH32 is a higher-strength hull structural steel (315 MPa yield) approved by the classification societies for shipbuilding. The A temperature grade is impact-tested at 0 °C; delivery is always under class survey with society certificates.
Chemical composition
| Element | Content (%) |
|---|---|
| C | ≤0.18 |
| Si | ≤0.50 |
| Mn | 0.90–1.60 |
| P | ≤0.035 |
| S | ≤0.035 |
| Note | Nb/V/Ti grain-refining per class rules |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Yield strength | ≥315 MPa |
| Tensile strength | 440–590 MPa |
| Impact | A-grade temperature: 0 °C |
| Density | 7.85 g/cm³ |
Heat treatment
Supplied as-rolled, normalized or TMCP under classification-society survey (ABS, LR, DNV, CCS…).
Equivalent grades
| Standard | Designation |
|---|---|
| aisi | A131 AH32 |
| jis | KA32 (near) |
| gb | AH32 (GB/T 712) |
Compare side by side: AH32 vs AH36
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Hull plating and longitudinals, decks, bulkheads of general cargo ships and bulk carriers.
Processing: Weld with class-approved consumables and procedures; mill certificates carry the classification society’s stamp — commercial substitution is not permitted.
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Ask for a quotationVisit NasteelSource: ASTM A131 / class rules published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.