Material specification notes
Specification details
| Parameter / condition | Value / requirement |
|---|---|
| Grade | 27MnCrB5-2 |
| Specification reference | EN 10083-3; exact edition to be agreed |
| Application boundary | Engineering component steel: specify core properties, heat treatment and any surface-hardening requirements separately. |
| Mechanical acceptance | Confirm thickness-dependent values in the specified product standard and heat certificate |
| Chemical acceptance | Confirm heat analysis against the exact contract edition; no automatic equivalence |
| Delivery condition | As ordered and shown on certificate; verify any legacy designation |
| Dimensions and tolerance | Product-form-specific standard and ordered class |
| Class approval | Only where expressly required and accepted for this product |
The stated values use the rule edition shown above. Select the contract standard, thickness, delivery condition and test specimen together; the supplied plate certificate records the actual heat results.
27MnCrB5-2 designation and selection
27MnCrB5-2 is an alloy engineering-steel designation whose complete number and suffix should be preserved. The manganese, chromium and boron framework supports an application-specific treatment route; it is not a prequalified hull steel. Check the exact EN product specification, ruling section and final-condition test requirements.
Enquiry fields for EN 10083-3 27MnCrB5-2
Confirm the exact edition, product form and dimensions, final delivery condition, quantity, equipment duty and accepting authority. Ask the producer for thickness-specific mechanical requirements and the complete heat analysis. If the application is classed, specify the required approval and inspection documents before production.
Certificate review and release
Connect the specified material to the delivered heat and piece IDs, then review the results and final condition. Sampling, test temperature, specimen geometry and any supplementary examination must match the order. Resolve missing evidence before releasing the material for fabrication. A cross-reference handbook is a comparison aid; the applicable standard and accepting engineer determine the final decision.
Order parameters
- Thickness / size scope
- Product-form and contract specific
- Delivery condition
- Verify the complete grade and final condition
- Class society requested
Society names are enquiry options. Approval and certificate scope must be confirmed for the actual material.
Frequently asked questions
What should be retained in a 27MnCrB5-2 component material schedule?
Keep the entire number and suffix, together with the exact EN product specification, ruling section and final-condition test requirements. The alloy designation supports an application-specific treatment review; it does not make the material a prequalified hull steel.
Technical sources and specification notes
- 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. - Preserved original material records — Per-page origins recorded in page_origins and content-audit.csv
Legacy numeric claims are not adopted without corroboration; use for provenance and original designation only.