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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Engineering Steel
- EN3B - 080A15 070M20 Mild steel
- EN1A - 220M07 230M07
- EN1A LD - 220M07 PB 230M07 PB
- EN8 - 080A42 080M40
- EN9 - 070M55
- EN14 - 150M19
- EN16 - 605M36 606M36
- EN19 - 708M40 709M40
- EN24/EN24T - 817M40
- EN36 - 655M13
- S690QL
- Alloy24™
- 4130 - 708A25
- 4140 - 708M40
- 4140 Plate
- Chrome Plated Steel Bar
Useful tools
