Available Shapes
EN31 Steel
EN31 Steel Rod is an actual high-strength steel alloy that is tough and hardened before contributing and has nickel, chromium, molybdenum making it great tensile steel power, with decent ductility and uniform resistance. EN31 is an actual great strength alloy manufacturing steel. EN31 mechanical properties is a superiority high carbon alloy steel that propositions a high degree of rigidity with compressive power and scrapes resistance.
Applications
Typical Analysis
Forging
Annealing
Stress Relieving
Hardening
Tampering
Applications
Typical applications for EN31 steel include taps, gauges, swaging dies, ejector pins, balls, and roller bearings. It is good quality steel for wear-resisting machine parts and for press tools that do not merit a more complex quality.
Typical Analysis
| Carbon | 0.90-1.20% | Manganese | 0.30-0.75% |
| Chromium | 1.00-1.60% | Sulphur | 0.050% max |
| Silicon | 0.10-0.35% | Phosphorous | 0.050% max |
Forging
Heat slowly and begin forging at 1000-1050°C. Allow sufficient time at the forging temperature for the steel to be thoroughly soaked through. Re heat as necessary and do not forge below 850°C. After forging EN31 steel, cool slowly preferably in a furnace.
Annealing
EN31 is usually supplied in the annealed and machineable condition. Re-annealing will only be necessary if the steel has been forged or hardened. To anneal, heat the EN31 steel slowly to 800-810°C, soak well and allow to cool in the furnace.
Stress Relieving
When parts are to be heavily machined, stress relieving will be beneficial prior to hardening. Heat the EN31 carefully to 700°C, soak well and allow to cool in air.
Hardening
Heat slowly to the hardening temperature of 800-820°C. Maintain until thoroughly soaked through. Plenty of time must be given for this soaking and then quench in oil.
Tampering
Temper according to the purpose for which the tools are required, generally between 150°C and 300°C. Soak well at the selected temperature and soak for at least one hour per 25mm of total thickness. Cool slowly in air.
| Temperature [°C] | 150 | 200 | 250 | 300 |
| Hardness [HRc] | 63-62 | 62-61 | 60-59 | 57-56 |
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