Nickel Chromium Molybdenum Steel Hardened and Tempered – Square
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 Square: Hardened and Tempered to T condition.
Stocked sizes – Hot Rolled
Metric Squares (mm)
40, 45, 50 & 100
Lengths – Standard bar lengths are 3/3.5 metres

Nickel Chromium Molybdenum Steel
Hot Rolled
Square – 817M40
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