M202 has been heat-treated steel, even hardness, up to 278-311HB ,29-33HRC, never made ??mold variant, cutting and polishing performance for electrical erosion operation can be flame hardened, chrome plated and nitrided.
M202 Factory Specifications: Pre-Hard to 950-1050N/mm2 (29-33HRC).
M202 uses: all sizes of plastic molds, and can be used for tin, lead, zinc alloy die-casting mold of the mold base.
M202 forged :1050-850 ℃ furnace cooling.
M202 mass recovery :850-900 ℃ furnace cooling.
M202 Stress Relief: Redu even after 1-2 hours in the furnace to stay cool.
M202 Quenching: Oil 840-860 ℃ or air :860-880 ℃. Stay at least 10 minutes, more than 20mm in thickness more than 1mm see every 1 / 2 minutes, so the hardness of approximately 54HRC.
M202 Tempering: tempering time to stay at least one hour, 20mm more than 20mm thick will have more and more every hour.
