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AISI 4340 Steel

AISI 4340 also known as EN24 comes treated in the T condition to 850/1000 N/mm2 . We offer AISI 4340 in blocks, plate from 10mm thick up to 300mm, diameters from 10mm up to 950mm, squares from 20mm to 300mm and flats 20 x 10 up to 3000 x 300mm from stock.

AISI BS 970 1955 EN BS 970 1991 Werkstoff
4340 EN24 817M40 1.6565

More EN24T properties, composition and equivalents here.

En24T is renown for its wear resistance properties and also were high strength properties are required.
Typical chemical composition of AISI 4340/En24T.

C

SI

MN

S

P

0.36/0.44

0.10/0.35

0.45/0.70

0.040 MAX

0.035 MAX

Cr

Mo

Ni

1.00/1.40

0.20/0.35

1.30/1.70

 

As we cut all our AISI 4340 flats & squares from plate we can cut other sizes more suitable for you.

AISI 4340 can also be supplied in blocks.

For a listing of the most popular sizes of AISI4340/EN24T steel please refer to our EN24T page.

Click here for Steel hardness conversion charts and heat treatment hardness tables

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Steel Express

Based in Wolverhampton, West Midlands, Steel Express are steel suppliers and stockholders. Stock is delivered on our own fleet of vehicles locally and nationally quickly and efficiently on the day we say we will.

We also provide a free issue cutting service, press braking, fabrication and forging.

 



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