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EN24 Engineering Steel

EN24 also known as 817m40. EN24 comes treated in the T condition to 850/1000 N/mm2 we can offer EN24 in 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. EN24 is a popular grade of through-hardening alloy steel due to its machinability in the "T" condition. EN24T 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.

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 En24 size ranges shown below, other sizes available upon request.

As we cut all our En24 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

EN24 Flats and Squares
25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190
25 x
30 x x
35 x x
40 x x x
45 x x x
50 x x x x
55 x x x x
60 x x x x x
65 x x x x x x
70 x x x x x x
75 x x x x x x
80 x x x x x x x
85 x x x x x x x
90 x x x x x x x x
95 x x x x x x x x
100 x x x x x x x x x
110 x x x x x x x x x x
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

EN24 Rounds Hot Rolled

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

EN24 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  

EN24 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

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