HUBEI XINTONG TECHNOLOGY CO.,LTD

Typical Chemical Composition (%)

Hot Forming

Forging: 1100 to 900℃, slowing cooling in furnace.

Heat Treatment of 1.2343/H11 steel

Annealing: 750 to 800℃, slow cooling in furnace (10-20℃/hr), down to 600℃, cooling in air. Hardness after annealing: max. 230 HB.

Stress relieving: 600 to 650℃, slow cooling in furnace. Hold in neutral atmosphere for 1 to 2hours.

Hardening: 1000 to 1040℃, oil/air, hold 15 to 30 minutes. Hardness , 52 to 56 HRC in oil, 50 to 54 HRC in air.

Tempering: 560 to 580℃. Slowly heating to tempering temperature right after hardening. Recommended to temper at least twice. The second tempering temperature shall be approx. 30℃ lower than the first tempering.

* Hardening temperature: 1020℃, specimen size: dia50mm

Surface treatment 

Nitriding: Suited for both bath and gas nitriding.

Properties of 1.2343/H11 steel

High impact strength, excellent hot tensile properties and deep hardening properties, insensitivity to thermal shocks. Water cooling available.

Applications of 1.2343/H11 steel

Heavy duty hot work tools and dies: mandrels, dies, and containers for metal tube and rod extrusion; hot extrusion equipment; tools and dies for the manufacture of hollow bodies, screws, rivets, nuts, and bolts. Die casting equipment, forming dies, die inserts, hot shear blades, and plastic moulding dies.