Die Steel EN31
EN31 is a high carbon Alloy steel which achieves a high degree of hardness with compressive strength and abrasion resistance.
|Density||7.85 g/cc||0.284 lb/in3|
Forge at 1000°/1050°C. Heat slowly, allowing sufficient time at the forging temperature for the steel to be thoroughly soaked through. Re-heat as often as necessary to keep the temperature above 850°C. After forging cool very slowly, preferably in a furnace.
Heat uniformly to 800°C, equalize, then furnace cool. (Hardness about 229 Brinell).
If machining operations have been heavy or if the tool has an unbalanced section, remove stresses before hardening by heating up to 700°C, equalize, then cool slowly.
Heat uniformly to 800/820°C until heated through. Allow 30 minutes per inch of ruling section and quench immediately in oil.
Heat uniformly and thoroughly at the selected tempering temperatures and hold for at least one hour per inch of total thickness
|Name of Material||Composition in % of Weight||Thermal conductivity W/m-k||Density Kg/m^3||Melting Point|
|C||Mn Si Cr S P Mg|
|En-31 IS-103 Crl||1.5||0.52 0.22 1.3 0.05 0.05 -||46.6||7810||1540|
|Tensile Strength||750 N/mm²|
|Yield Stress||450 N/mm²|
|Reduction of Area||45%|
|Modulus of elasticity||215 000 N/mm²|
|Hardening Temperature||802˚- 860˚ C|
|Tempering Temperature||180˚- 225˚ C|
|Brinell-Rockwell Hardness||59 - 65|