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EN39B | 835M15 grade steel is a 4.5% nickel-chromium-molybdenum case hardening steel which may be carburised and hardened in large sections to produce a hard wear resistance case, and developing a core strength of the order of 1310N/mm ² with good resistance to shock.
Case Hardening steel grade 835M15
EN39B | 835M15 Engineering steel
Steel stock range
High Peak Steels stock offer EN39B | 835M15 in black steel round bar.
Associated standards
UK Standard EN39B
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EN39B | 835M15 black steel
| Product | Min size | Max size |
|---|---|---|
 | 38mm dia | 140mm dia |
EN39B | 835M15 Chemical Composition
| C | Si | Mn | S | P | Cr | Ni | Mo | |
|---|---|---|---|---|---|---|---|---|
| Min | 0.12 | 0.10 | 0.25 | 1.00 | 3.90 | 0.15 | ||
| Max | 0.18 | 0.35 | 0.50 | 0.040 | 0.035 | 1.40 | 4.30 | 0.30 |
EN39B | 835M15 Mechanicals
| Yield N/mm2 | 0.2% proof N/mm2 | UTS (Rm) N/mm2 | Elong (A) % | Red of Area (Z) % | Hardness HB | Impact Test (KV) J |
|
|---|---|---|---|---|---|---|---|
| Annealed (min) | |||||||
| Annealed (max) | 277 | ||||||
| Q&T capability test on 19mm sample (min) | 1310 | 8 | |||||
| Q&T capability test on 19mm sample (max) |
Typical Applications of EN39B steel
- HIGH DUTY GEARS
- HEAVY DUTY WORMS
- HEAVY ROLLER BEARINGS
- BREECH MECHANISMS
- VALVE ROCKERS
- SMALL ARMS COMPONENTS
- CAMSHAFTS
- CLUTCH PLATES
