En31 Steel
| EN31 Steel | American (AISI) | WERKSTOFF (WNR) | Japanese (JIS) | German (DIN) | Bohler |
|---|---|---|---|---|---|
| A295 | - | G4805 | 17230/1.350 | - |
What is EN31 Steel ?
It is a Raw Material which Achives a High Degree of Hardness With Compressive Strength & Abrasion Resistance.
En31 Steel Is Used In ?
- Mould/Dies
- Taps
- Gauges
- Swaging
- Dies
- Injector Pins
- Ball & Roller Bearings
- Automobile
- Application Such as Heavy Duty Gear
- Shaft
- Pinion
- Camshafts
- Gudgeon Pins
- Machining Components etc.
| Hardness After Tempering (HRC) | 58-62 |
|---|
| Hardness BeforeTempering (HRC) | Approx 25 |
|---|
Chemical Composition Of En31 Steel
| C | Si | Mn | P | S | Cr |
|---|---|---|---|---|---|
| 0.90-1.20 | 0.10-0.35 | 0.30-0.75 | 0.050 max | 0.050 max | 1 -1.60 |
Heat Treatment of En31 Steel
| Forging | Annealing | Hardening | QuenChing | Tempernin |
|---|---|---|---|---|
| TempºC | TempºC | TempºC | Medium | TempºC |
| 1050-1000 | 780-800 | 800-860 | - | 150-225 |
Form Of Supply
| Round | Flat |
|---|
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 780-810°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 800-860°C. Maintain until thoroughly soaked through. Plenty of time must be given for this soaking and then quench in oil.
Tempering
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 |
Heat Treatment
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each EN31 component. Other considerations during the heat treatment process including the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of EN31.