817M40 Engineering Steel

817M40 also known as EN24 comes treated as 817M40T to 850/1000 N/mm² we can offer 817M40 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.

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

817M40T is renown for its wear resistance properties and also were high strength properties are required.
Typical chemical composition of 817M40.

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

Popular 817M40 size ranges shown below, other sizes available upon request.

As we cut all our 817M40 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

817M40 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