4340

W.Nr 1.656540NiCrMo8-4

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Designations

Material family
Alloy Steels
Werkstoff (W.Nr)
1.6565
EN designation
40NiCrMo8-4

Specifications

AMS 6417

Material is released to the applicable specification with mill test reports and, on request, independent lab verification.

Available forms

Custom sizes converted from billet, plus saw cut, waterjet and near-net blanks.

About alloy steel

Alloys International is your #1 source for alloy steels. Backed by our global mill network, we offer commercially graded aircraft steel, military-grade steel, maraging steel, and custom products for specific applications, including aerospace steel alloys — with full certification included on every order.