4340 Alloy Steel - Sheet, Plate, Bar, Forged Bar

UNS G41300, AMS 6409, AMS 6414, AMS 6415  

* All Trademarks and/or Trade names are the properties of their respective owners. 


4340 Specifications: AMS 6409, AMS 6414, AMS 6415

AISI 4340, AISI E4340, Alloy 4340,
4340 VAC MELT, UNS G41300

4340 AMS 6414- Vac Melt – Forged bar

4340 AMS 6414- Vac Melt – Forged bar


4340 Available Forms: 4340 Alloy Sheet, 4340 Alloy Plate, 4340 Alloy Bar, 4340 Alloy Forged Bar

4340 AMS 6414- Vac Melt – Forged bar

4340 AMS 6414- Vac Melt – Forged bar


4340 Applications: 4340 is is mainly used in power transmission gears and shafts, aircraft landing gear, and other structural parts.


Alloy Steel 4340 is another alloy known for superior mechanical properties. 4340 is a heat treatable, low alloy steel containing nickel, chromium and molybdenum. It is known for its toughness and capability of developing high strength in the heat treated condition while retaining good fatigue strength.

California Metal & Supply is a leading supplier of quality 4340 Sheet, 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. California Metal & Supply Inc. also has a stocking program to support long term contract for your 4340 needs.