EN36C (832M13) Engineering steel
832M13 grade steel is a nickel-chromium alloy case hardening steel that is specified for heavy duty highly – stressed applications which High Peak Steels supply for such as High duty gears for aircraft and Steering Worms.
When carburised and hardened the core strengths of 850 – 1230 n/mm2 are attainable. The presence of chromium increases hardenability, while the nickel content increases toughness and resistance to stock.
The addition of molybdenum further increases this material’s hardenability when compared with grade 655M13 and improves its core strength after heat treatment.
The nickel acts to increase the toughness and resistance to shock.
832M13 is still often referred to as EN36C steel – its equivalent grade under the previous BS 970: 1955 standard.
Steel stock range
High Peak Steels stock 832M13 in a round bar.
Associated standards
UK Standard EN36 | European Grades 15NiCr13 | Werkstoff 1.5752 | SAE/AISI 3415
EN36C (655M13) Black
| Product | Min size | Max size |
|---|---|---|
 | 25mm dia | 330mm dia |
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EN36C (655M13) Bright
| Product | Metric sizes Min | Max | Imperial sizes Min | Max |
|---|---|---|---|---|
| 10mm dia | 50mm dia | 1/2" dia | 2" dia |
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EN36C (655M13) Chemical Composition
| C | Si | Mn | S | P | Cr | Ni | Mo | |
|---|---|---|---|---|---|---|---|---|
| Min | 0.1 | 0.1 | 0.35 | 0.7 | 3 | |||
| Max | 0.16 | 0.35 | 0.6 | 0.04 | 0.035 | 1 | 3.75 | 0.15 |
EN36C (655M13) 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) | 255 |
EN36C (832M13) Typical applications
- High duty gears for aircraft
- Heavy vehicle and automobile transmission components
- Steering worms
- Track rod pins
- Timing wheels
- Breech mechanisms
- Small arms parts