Application Segments


Melting Route

Airmelted + VAR

Product Description

BÖHLER V124SC is a premium aircraft-quality, low-alloy Ni-Cr-Mo steel in the form of bars, forgings and forging stock requiring high tensile and toughness values, particular in large cross sections in the hardened and tempered condition.

These products have been used typically for parts requiring a through-hardening capability up to 3.5 inches (89 mm) in nominal thickness at time of heat treatment but usage is not limited to such applications. E.g. highly stressed components and parts for the aircraft industry, Tracks, helicopter shafts, bolts and screws.

Technical Specifications

Material Numbers

4340 G43400 4340



Chemical Composition

Chemical composition (average %)
0.38 to 0.43 0.15 to 0.35 0.65 to 0.90 max. 0.010 max. 0.010 0.70 to 0.90 0.20 to 0.30 1.65 to 2.00 max. 0.35


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