Grade overview

Nickel contributes toughness, chromium improves hardenability and wear behavior, and molybdenum supports hardenability and temper resistance.

Typical applications

Aircraft landing components, heavy shafts, gears, fasteners, pressure components and highly loaded forgings.

Equivalent / related designations

Often compared with EN 34CrNiMo6. Heat treatment and toughness requirements must be reviewed before substitution.

Common manufacturers and supply

Supplied by aerospace and specialty steel producers including Carpenter Technology, Aubert & Duval, Böhler/voestalpine, Daido and qualified forging-quality mills.

Fabrication and selection notes

Confirm the exact product standard, edition, dimensions, delivery condition, mechanical properties, impact requirements, heat treatment, welding procedure, corrosion environment and certification. A grade name alone is not sufficient for procurement or design approval.

QA/QC documentation

For critical service, verify heat number traceability, mill test certificate, chemical analysis, tensile/impact results where required, NDT, heat-treatment record and project-specific third-party inspection requirements.

Element Folio engineering reference. Values and requirements vary by standard edition, product form and manufacturer; always verify the latest governing specification.