MIL-S-18729C, MILITARY SPECIFICATION, STEEL PLATE, SHEET, AND STRIP, ALLOY, 4130, AIRCRAFT QUALITY (5 MAR 1965) [S/S BY SAE-AMS6350, SAE-AMS6351 OR SAE-AMS6345]

MIL-S-18729C, MILITARY SPECIFICATION, STEEL PLATE, SHEET, AND STRIP, ALLOY, 4130, AIRCRAFT QUALITY (5 MAR 1965) [S/S BY SAE-AMS6350, SAE-AMS6351 OR SAE-AMS6345]., This specification covers chrome-molybdenum alloy 4130, steel sheet, strip, and plate of thickness to and including 1.50 inches.