MIL-S-8699A, MILITARY SPECIFICATION: STEEL BARS AND FORGING STOCK (4330) VANADIUM MODIFIED, AIRCRAFT QUALITY (22-JUL-1957) [S/S BY SAE-AMS6411 AND SAE-AMS6427]

MIL-S-8699A, MILITARY SPECIFICATION: STEEL BARS AND FORGING STOCK (4330) VANADIUM MODIFIED, AIRCRAFT QUALITY (22-JUL-1957) [S/S BY SAE-AMS6411 AND SAE-AMS6427]., This specification covers aircraft quality bars and forging stock of composition similar to that commercially designated as 4330 vanadium modified, and suitable for use for parts to be heat-treated to 220,000-psi tensile strength.