SKD12 an air quenching tool steel, hardened with the deep space of performance, which requires quenching and tempering must maintain its shape after the mold is extremely useful complexity. As the air quenching the steel deformation caused by oil quenching system only about manganese tool steel 1 / 4, wear resistance between the manganese-and high-carbon high-chromium type tool steel between the toughness of any kind is good, particularly for good wear resistance also requires a special tool for good toughness, is widely used in cutting die and the forming mold, roll, punch, rolling die and rolling die, but also for certain types of shears, and blades .

  Use
Die for a variety of hardware, and bear a greater impact on large, complex red set mode.

  Factory state
Ball annealing HB ≤ 230

  Chemical composition
C: 0.95/1.05

Mn: ≤ 1.00

Si: ≤ 0.50

Cr: 4.75/5.50

P: ≤ 0.025

S: ≤ 0.020

Mo: 0.90/1.40

V: 0.15/0.50

  Feature
1, air quenching tool steel hardened with a deep space of performance,

2, high wear-resistant line, micro-deformation, high hardenability, high compressive strength,

3, Cr12 steel carbide distribution more uniform.

  Heat treatment
Slow cooling annealing :1,800-850oC 2 spheroidizing

Air-cooled quenching :940-960oC

Tempering :180-220oC cooled HRc = 60-64 510-520oC cooled HRc = 57-60