Cold Work Tool Steel 1.2379

Cold work tool steel 1.2379

Tool steel 1.2379 Chemical Composition (%)

Hot Forming

Forging: 1050 to 850℃, slowing cooling in furnace.

Heat Treatment

Annealing: 800 to 850℃, slow cooling in furnace (10-20℃/hr), down to approx. 600℃, cooling in air. Hardness after annealing: max. 250HB.

Stress relieving: approx. 650℃, slow cooling in furnace. Hold in neutral atmosphere for 1 to 2hours.

Hardening: 1010 to 1050℃, oil, air or hot bath at approx. 350℃ to 450℃. Hold 15 to 30 minutes. Hardness obtainable, 63 to 65 HRC.

Tempering: 520 to 570℃. Slowly heating to tempering temperature right after hardening. Recommended to temper 2 or 3 times to increase toughness.

* Hardening temperature: 1030℃, specimen size: dia25mm

Surface treatment

Nitriding: suitable for nitriding.

Properties

Good dimensional stability; excellent wear resistance due to the ledeburitic structure. Best toughness. Nitriding is possible.

Tool steel 1.2379 Applications

High performance blanking and punching dies for sheet thickness up to 5 mm; circular and straight shear blades for sheet thickness up to 4 mm; precision stamping dies; cold drawing tools, hobbing dies, thread cutting tools, cold pilger mandrels; flanging rolls; guide rolls; forming rollers for continuous production of steel profiles and tubes; small plastic moulds and inserts for abrasive materials.