Si is less than equal to 0.40
Mn less than or equal 0.40
Cr2.20 ~ 2.70
W7.50 ~ 9.00
V0.20 ~ 0.50
p less than or equal 0.030
S less than or equal 0.030
Heat treatment and use
Heat treatment
Heat treatment: (Delivery Status: Brinell hardness HBW10/3000 (less than or equal 255 - 207)), quenching: 1075 ~ 1125, the cooling agent: oil;
Use
Uses: Commonly used die-casting mold steel. Lower carbon content, higher toughness and good thermal conductivity; the same time, contains more carbon atoms of chromium, tungsten, vanadium, phase transition temperature increase, the steel has high temperature strength, hardness and good thermal fatigue; hardenability. Suitable for high-temperature, high stress, but not shock load the die-casting copper, aluminum, magnesium alloy with mold, core, gate sets, split nails, high should beat wax, hot shear knives, hot forging die , flat forging machine punch and die, inserts and so on.
