AISI 4340 (E4340) per AMS 6359 - Plate

Aircraft Quality 4340 per 6359 Hot Rolled Plate

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.

AMS 6359 - AISI 4340 (E4340) Aircraft Quality Steel Plate Size Table

SIZE
INCHES
WGT./
SQ.FT.
18" x 72"
ANNEALED
36" x 72"
ANNEALED
72" x 144"
ANNEALED
0.190 7.945 HR HR HR
1/4 10.20 HR HR HR
5/16 12.75 HR HR HR
3/8 15.30 HR HR HR
1/2 20.40 HR HR HR
5/8 25.50 HR HR HR
3/4 30.60 HR HR HR
7/8 35.70 HR HR HR
1 40.80 HR HR HR
1 1/4 51.00 HR HR HR
1 1/2 61.20 HR HR HR
1 3/4 71.40 HR HR HR
2 81.60 HR HR HR
2 1/2 102.00 HR HR HR
3 122.40 HR HR HR
3 1/2 142.80 HR HR HR
4 163.20 HR HR HR
4 1/2 183.50 HR HR HR
5 204.00 HR HR HR
6 244.83 HR HR HR
  • Material may also meet specs ASTM-A829, AMS-2301, EN10204.
  • For detailed information and chemical analysis visit the 4340 (E4340) steel page.
  • For our AISI 4130 (E4130) aircraft quality steel products please visit the 4130 (E4130) steel section.

 

We also offer Flat Bar from Plate

 

Supplying the world AISI 4130 (E4130) and 4340 (E4340) Aircraft Quality Steel.
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