Nickel Chromium Molybdenum Steel Hardened and Tempered – Flat
Grade: 817M40
Finish: Hot Rolled
USEN 24T/USALOY 24T –
Nickel Chromium Molybdenum Steel Hardened and Tempered –
Colour: White/Brown
BS 970: Part 1: 1983: 817M40, BS EN 10083-1: 1991: 34CrNiMo6
BS 970: 1955: EN24T
Nearest Equivalent to AISI SAE4340
Form of Supply:
Hot Rolled Flat: Hardened and Tempered to T condition.
Stocked sizes – mm.
15 | 25 | 30 | 35 | 40 | 50 | |
---|---|---|---|---|---|---|
30 | x | |||||
40 | x | |||||
50 | x | x | ||||
60 | x | x | ||||
75 | x | x | x | |||
100 | x | x | x | x | ||
125 | x |
Lengths – Standard bar lengths are 3/3.5 metres

Nickel Chromium Molybdenum Steel
Hot Rolled
Flat – 817M40
Download PDF - click link above
Central – Rugby
Call: +44 (0)1788 542 191
Fax: +44 (0)1788 535 352
rugbysales@aarteebrightbar.com
Paynes Lane, Rugby,
CV21 2UW, England
Northern – Manchester
Call: +44 (0)1204 576 321
Fax: +44 (0)1204 574 511
manchestersales@aarteebrightbar.com
Stone Hill Road, Farnworth, Bolton,
BL4 7NN, England
Western – Newport
Call: +44 (0)1633 422 944
Fax: +44 (0)1633 421 958
newportsales@aarteebrightbar.com
Ponthir Road, Caerleon, Newport,
South Wales, NP18 3XH
Southern – Southampton
Call: +44 (0)23 8087 1500
Fax: 4 (0)23 8087 1150
southamptonsales@aarteebrightbar.com
Suite B Testwood Park, Salisbury Road,
Calmore, Southampton, SO40 2RW
North East – Sunderland
Call: +44 (0)191 5200165
sunderlandsales@aarteebrightbar.com
Signature House, 3 Azure Court, Doxford
International Business Park, Sunderland,
SR3 3BE. England