KUSHAL METAL & STEEL INDUSTRIES

www.kushalmetal.com www.berylliumcopper.in 33 HIGH-PERFORMANCE DIE STEEL FOR HOT EXTRUSION KDA1 Hardness after heat treatment Main Ingredients of Hot Tool Steel Typical Chemical Ingredients of Hot Tool Steel Positioning of Tool Steel for Hot Work Mo. W. Co. Strength at high temperature high Toughness ---> High Si DOWN, Ni UP Examples of Hot Extrusion Dies Troubles (HRC) O Tempering temperature ( C) Hardening and Tempering Hardness Curve Mechanical property Charpy Impact Value 0.2% Proof Stress, Tensile Strength KDA 1 has 1.5 times better toughness thank SKD61. (T direction) 0.2% Proof Stress, Tensile Strength are equivalent to SKD61. Decrease of dies cracks Room temperature 500 O tempering temperature ( C) Heat Resisting Softening Heat resisting softening at heating and holding KDA 1 has good performance about Heat Resisting Softening. Prevent dies bending by softening High temperature deformation Test results of High temperature deformation KDA 1 is less deformed under high temperature environment than SKD61. Prevent dies bending  Reduction of permanent distortion  Decreases of dies cracks Deflection characteristics in Dies KDA1 is less deflection than SKD61 on extrusion press. Increasing hardness, reduces deflection. SOLE DISTRIBUTOR