Standards
[CURRENT]
BS 4S 28+A3
BS 4S 28+A3
Specification for aircraft material. 4 per cent nickel-chromium-molybdenum steel (air hardening) (100 tonf/sq in: limiting ruling section 2$9H in)
Title (German)
Flugzeugmaterial. Spezifikation. 4% Nickel-Chrom-Molybdaenstahl (lufthaertend) (100 tonf/sq in; hoechstzulaessiges Profil 2 $9H Zoll)