SAE 4340 Chromoly steel is ideal for parts requiring critical harden-ability and high strength metal. For example, gears and aircraft parts which operate under highly stressed, severe conditions perform exceptionally when made from 4340 AQ metal. The term Aircraft Quality (AQ) steel means it is suitable for the manufacturing of aircraft parts which are subject to magnetic particle inspection after machining.
If you don't see the size below for your 4340 material, call your salesperson as our inventory is constantly changing and new items may not be listed below. Or request a quote online now using our convenient form.
Need Information on Current Steel Prices? Contact Us Today!
AMS 6359 - AISI 4340 (E4340) Aircraft Quality Steel Plate Size Table
|18" x 72"
|36" x 72"
|72" x 144"
Supplying the world AISI 4130 (E4130) and 4340 (E4340) Aircraft Quality Steel.
Partner with a company that stands behind its products and services!
Call us at