AMS6278G Steel, Bars, Forgings, Mechanical Tubing, and Forging Stock, 4.1Cr - 3.4Ni - 4.2Mo - 1.2V (0.11 - 0.15C) (M50 NIL), Premium Aircraft-Quality for Bearing Applications, Double Vacuum Melted

Revised

7/13/2026

Features
Issuing Committee
Scope
Content
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
Details
Citation
SAE International Material Specification, Steel, Bars, Forgings, Mechanical Tubing, and Forging Stock, 4.1Cr - 3.4Ni - 4.2Mo - 1.2V (0.11 - 0.15C) (M50 NIL), Premium Aircraft-Quality for Bearing Applications, Double Vacuum Melted, SAE Standard AMS6278G, Revised July 2026, Reaffirmed May 1995, Issued October 1985, .
Additional Details
Published
Yesterday
Product Code
AMS6278G
Content Type
Material Specification
Status
Revised
Language
English