Model Number: ZXL080 Brand Name: Baosteel, TISCO Key Specifications/Special Features: DescriptionH12 hot work tool steel is a 5% chromium, general-purpose hot work steel that is characterized by excellent impact toughness. It contains less vanadium than the widely-used H13 hot work tool steel. Steel is a deep-hardening, air-hardening steel that exhibits minimal size change during heat treatment. It has good resistance to thermal fatigue cracking (heat cracking) and excellent resistance to gross cracking and thermal shock when water cooled in service.ApplicationsH12 hot work steel is recommended for hot tooling applications where maximum resistance to cracking is required. Such applications include hot punches, die casting dies, forging diw, hot shear blades, and extrusion tooling.Soft AnnealingHeat to 820-840℃, cool slowly in furnace. Time is 4-6 hours. This will produce a maximum Brinell hardness of 220.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx.650℃, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
Harden from a temperature of 1000-1050℃followed by oil, air quenching or warm bath quenching approx. 540℃. Hardness after quenching is 54HRC.
Tempering
Tempering temperature: 520-700℃, at least 2-3x.
Forging
Hot forming temperature: 1100-850℃.
Machinability
75-80% of a 1% carbon steel.
Corrosion Resistance
Corrosion resistance of this alloy is better than that of plain carbon steels. However it will rust unless given protective treatment.

Specifications:
Grade: AISI H12
Standard: DIN, GB, AISI
Length: 1500-6000mm
Width: 100-2000mm
Thickness: 0.2-200mm
Certification: ISO
Technical treatment: cold-rolled and hot rolled

Packing and delivery
packing: standard export seaworthy package or as customers’ requirements
Delivery: 7-20 days after received deposit of T/T