Material and assembly
Strength and stiffness change with temperature. Thermal expansion, restraint and heat gradients can cause deformation independent of the original room-temperature grade. Fire endurance is assessed for the relevant construction and protection system.
Post-exposure review
Identify the affected area, heating evidence, deformation and original material condition. A visual inspection or isolated hardness measurement is insufficient to certify retained design properties. Agree additional examination, sampling or replacement with the responsible engineer and class.
Purchasing implications
If elevated-temperature service is intended, specify the appropriate design code and material properties at that temperature. Do not advertise a generic maximum service temperature taken from a carbon-steel data aggregator as an AH36 design limit.
Information to record
- Exact product standard and edition; approved drawing or specification revision.
- Grade, dimensions, final condition and heat-to-piece traceability.
- Acceptance test, inspection document and responsible approving party.
Frequently asked questions
Does a ship plate grade include a fire rating?
No. The material certificate and the assembly fire assessment have different scopes.
Sources and reference scope
- Procurement and editorial guidance — Cross-checked against product terminology and the cited material rules
Guidance describes checks to request. It is not a claim of available stock, certificates or completed project engineering. - 钢材产品简介 — Slides 3, 5–6, 15–19
Product forms, units and grade vocabulary; not proof of current stock or class certification.