4340 — CALIFORNIA METAL & SUPPLY
Stainless Steel. STAINLESS STEEL 13-8 15-5 17-4 17-7 ... AISI 4340, AISI E4340, Alloy 4340, 4340 VAC MELT, UNS G41300. 4340 AMS 6414- Vac Melt – Forged bar. ... 4340 Plate, 4340 Steel Bar, 4340 Forged Bar. All of our 4340 is ordered to specific thickness. We supply 4340 and are capable of fulfilling your required lengths and widths.