EN24T Engineering Steel, EN24 Steel treated in the T condition
EN24T also known as 817m40. EN24 comes treated in the T condition to 850/1000 N/mm2. We offer EN24T in plate from 10mm thick up to 300mm, diameters from 10mm up to 950mm, square bars from 20mm to 300mm and flat bars 20 x 10 up to 3000 x 300mm from stock. EN24T is a popular grade of through-hardening alloy steel due to its machinability in the "T" condition. EN24T steel is used in components such as gears, shafts, studs and bolts. EN24T can be further surface-hardened to create components with enhanced wear resistance by induction or nitriding processing.
EN24T properties, composition and equivalents here.
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We stock EN24 and EN24T for rapid local and national delivery, also available for export, call for details.
| BS 970 1991 | BS 970 1955 EN | AISI/SAE | Werkstoff |
| 817M40 | EN24 | 4340 | 1.6582 |
En24T is renown for its wear resistance properties and also where high strength properties are required.
Typical chemical composition of En24 |
|||||||
|---|---|---|---|---|---|---|---|
C |
SI |
MN |
S |
P |
Cr |
Mo |
Ni |
0.36/0.44 |
0.10/0.35 |
0.45/0.70 |
0.040 MAX |
0.035 MAX |
1.00/1.40 |
0.20/0.35 |
1.30/1.70 |
Popular En24T size ranges shown below, other sizes available upon request.
As we cut all our En24T flats & squares from plate we can cut other sizes more suitable for you.
10mm x 20, 25, 30, 40, 50, 60, 65, 70, 75, 80, 85, 90, 95, 100, 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500
20mm x 20, 25, 30, 40, 50, 60, 65, 70, 75, 80, 85, 90, 95, 100, 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500
30mm x 35, 40, 50, 60, 65, 70, 75, 80, 85, 90, 95, 100, 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500
40mm x 50, 60, 65, 70, 75, 80, 85, 90, 95, 100, 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500
50mm x 60, 65, 70, 75, 80, 85, 90, 95, 100, 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500
60mm x 65, 70, 75, 80, 85, 90, 95, 100, 120, 125, 130, 140,150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500,
70mm x 75, 80, 85, 90, 95, 100, 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500
80mm x 85, 90, 95, 100, 120, 125, 130, 140,150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500
90mm x 95, 100, 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500, 550, 600, 700, 800, 900, 1000
100mm x 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500, 550, 600, 700, 800, 900, 1000
110mm x 120, 125, 130, 140, 150, 160, 180, 200, 250, 250, 300, 320, 350, 400, 500, 550, 600, 700, 800, 900, 1000
120mm x 125, 130, 140, 150, 160, 180, 200, 250, 300, 320, 350, 400, 500, 550, 600, 700, 800, 900, 1000
130mm x 140, 150, 160, 180, 200, 250, 300, 320, 350, 400, 500, 550, 600, 700, 800, 900, 1000
140mm x 150, 160, 180, 200, 250, 300, 320, 350, 400, 500, 550, 600, 700, 800, 900, 1000
150mm x 160, 180, 200, 250, 300, 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
160mm x 180, 200, 250, 300, 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
180mm x 200, 250, 300, 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
190mm x 200, 250, 300, 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
200mm x 220, 250, 300, 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
220mm x 250, 300, 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
250mm x 260, 300, 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
280mm x 300, 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
300mm x 320, 350, 350, 400, 420, 450, 480, 500, 550, 600, 700, 750, 780, 800, 820, 850, 900, 1000
EN24T Flats and Squares |
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| 120 | x | x | x | x | x | x | x | x | x | x | x | |||||||
| 125 | x | x | x | x | x | x | x | x | x | x | x | |||||||
| 130 | x | x | x | x | x | x | x | x | x | x | x | x | ||||||
| 140 | x | x | x | x | x | x | x | x | x | x | x | x | x | |||||
| 150 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | ||||
| 160 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | |||
| 170 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | |||
| 180 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | ||
| 190 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 200 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 220 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 230 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 240 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 240 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 260 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 270 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 280 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 290 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 300 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 310 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| 320 | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x | x |
| Size (mm) | 40 | 50 | 60 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 115 | 120 | 125 | 130 | 140 | 150 | 160 | 170 | 180 | 190 | 200 | 220 | |
| 240 | 260 | 280 | 300 | 320 | 350 | 400 |
EN24T Rounds Bright Drawn
| Size (inches) | 5/16 | 3/8 | 7/16 | 1/2 | 9/16 | 5/8 | 3/4 | 7/8 | 15/16 | 1 | 1 1/8 | 1 1/4 | 1 3/8 | 1 1/2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 5/8 | 1 3/4 | 2 | 2 1/4 | 2 1/2 | 2 3/4 | 3 | 3 1/2 | 4 | ||||||
| Size (mm) | 10 | 12 | 15 | 16 | 18 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 |
EN24T Steel is equivalent to AISI 4340 steel or Werkstoff 1.6565 and 817M40
Click here for Steel hardness conversion charts and heat treatment hardness tables
Other engineering steel grades: En1A, En3B, En8, En9, En14, En16, En19, En24, EN24T, En36
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