Hot work die steel is a type of tool steel that is specifically designed to retain its strength, hardness, and toughness at high temperatures. Hot work die steel is used in applications in which the tool or die is in repeated contact with hot material such as is the case in forging, extrusion, or die-casting operations to name a few.

Key Features:

• High Temperature Resistance: Distinguished by its ability to maintain its hardness and dimensional stability during high operating temperatures.
• Toughness & Wear Resistance: Resists thermal fatigue, mechanical shock, and abrasion while exposed to the cyclic heating and cooling cycles of hot work applications.
• Alloyed for Benefit: Usually these steels are alloyed with chromium, molybdenum, and vanadium to improve their heat resistance and toughness.

Hot Work Die Steel is a critical material across industries like automotive, aerospace and heavy machinery to be used in the manufacture of dies, tools, and molds subjected to repeated thermal and mechanical stress. An example of hot work die steel usage would include forging dies that must resist softening and cracking during applied high pressure and high heat. These steels are heat treated and carefully selected based upon a specific set of thermal and mechanical requirements expected. Their strength and durability help ensure repeatability and consistency from part to part, while reducing the need for replacement of tools.