EN30B is a 4录% nickel air/oil hardening steel. It achieves a good through hardness with high strength and toughness. It is capable of taking a good polish and is widely used as a plastic mould steel. Forging: Heat slowly and uniformly to uniformly to 1050掳C. After forging cool slowly.
Annealing: Heat uniformly to 630/650掳C. Soak well and cool slowly in the furnace.
Hardening: Pre heat slowly yo 650/700掳C and thoroughly soak. Continue heating to the final hardening temperature of 830/850掳C and allow the component to be heated through. Quench in oil or cool in air.
Tempering: Heat uniformly and thoroughly at the selected tempering temperatures and hold for one hour per inch of total thickness. Tempering 掳C 150 250 350 450
XAJTsteel EN30B 
