Shipbuilding steel plate
A
Grade A is the baseline normal-strength hull structural grade, specified where no low-temperature impact testing is required — general shell plating, decks and bulkheads in ambient service.
Mechanical properties
- Grade class
- Normal strength
- Minimum yield ReH
- 235 MPa
- Tensile strength Rm
- 400–520 MPa
- Elongation A5
- 22%
- Impact test temperature
- Not required
Impact energy in joules is not listed here because it varies with plate thickness and specimen orientation. The value that governs your order is the one on the mill test certificate, issued per heat.
Stock & dimensions
- Thickness
- 3–12 mm
- Widths
- 1,500 / 1,800 / 2,000 mm
- Lengths
- 6,000 / 8,000 / 10,000 mm
Also supplied as bulb flat
A is also held as bulb flat bar for hull framing.
View bulb flat availabilityClassification society approvals
Approvals are held with the nine classification societies below. Certificates are available on request, and material is released with the mill test certificate for the relevant heat.
- CCS A
- ABS A
- DNV A
- GL A
- BV A
- LR A
- RINA A
- KR A
- NK A
Related grades
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