NA 131
DIN Standards Committee Aerospace
Standards
[CURRENT]
WL 1.7784-4
WL 1.7784-4
Ultra high-strength chromium-molybdenum-vanadium steel with about 0.4C-5Cr-1.3Mo-0.5V; pipes
Title (German)
Höchstfester Chrom-Molybdän-Vanadin-Stahl mit etwa 0,4C-5Cr-1,3Mo-0,5V; Rohre