The procurement decision
AH36 is associated with the 0°C impact category, DH36 with −20°C and EH36 with −40°C in the referenced IACS W11 tables. Thickness, specimen orientation, size and permitted exemptions still matter. A single energy value without those conditions is an incomplete specification.
Strength is only one comparison
Check yield and tensile acceptance against the specified edition. Check chemistry, delivery condition, welding qualification, through-thickness properties and traceability separately. A plate with the requested grade marked on it can still fall outside a mill approval thickness range.
Avoid automatic upgrades
An EH36 certificate is not blanket authorization to change a drawing that specifies AH36. Submit the proposed material, certificate and delivery condition for project approval. Stock quantity, cutting yield and survey attendance can also change the purchase decision.
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
Is EH36 automatically more corrosion resistant?
No. The toughness category does not establish superior seawater corrosion resistance. Coating, corrosion allowance and exposure control remain separate design decisions.
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.