817M40 Steel — Specifications & Listings
BS970:1991 — British Ni-Cr-Mo alloy steel, successor to EN24
Grade Details
| Grade | 817M40 |
| Standard | BS970:1991 |
| Description | British Ni-Cr-Mo alloy steel, successor to EN24 |
| Applications | High tensile shafts, gears, crankshafts |
Equivalent / Similar Grades
Chemical Composition (%)
| C |
Mn |
Cr |
Mo |
Ni |
| 0.36–0.44 |
0.45–0.70 |
1.00–1.40 |
0.20–0.35 |
1.30–1.70 |
Mechanical Properties
| Tensile Strength |
850–1000 MPa |
| Yield Strength |
≥680 MPa |
| Elongation |
≥13% |
Typical Available Sizes
| Round Bar |
20mm–350mm dia |
| Flat Bar |
25×10mm–250×75mm |
Sizes are indicative. Contact seller for exact availability.
Active 817M40 Listings on M-EX