M202 has been heat-treated steel, uniform hardness ASP-23, up 278-311HB, 29-33HRC, made mold never change, excellent cutting and polishing performance for electrical erosion operation can be flame hardened, chrome plated and nitrided deal with. Chemical Composition C W tungsten carbon chromium Cr Mn Si silicon manganese vanadium V 0.95 0.5 0.5 1.1 0.3 0.1 M202 factory specifications detailed parameters: pre-hardened to 950-1050N / mm2 (29-33HRC). M202 uses: all size plastic molds, and can be used for tin, lead, zinc alloy die-casting mold of the mold base. M202 Wrought: 1050-850 ℃ oven to cool. M202 back to nature: 850-900 ℃ oven to cool. M202 stress relief: After the heat evenly, stay for 1-2 hours to cool in the oven. M202 quenching: 840-860 ℃ oil or air: 860-880 ℃. Stay at least 10 minutes, at a thickness of more than 20mm see more 1/2 minutes per 1mm, so the hardness of about 54HRC. M202 Tempering: tempering stay at least 1 hour, each will have more than one hour more than 20mm 20mm thick or more. High speed steel SKH-9 on the market especially since only increase or decrease the carbon content, and therefore does not damage the high temperature characteristics, continuous and substantial change in the nature of steel. When SKH-9-speed steel needed reform of the low carbon steel for lower hardness, wear resistance required in the circumstances for the selection of high-carbon steel bell. Full of hot, cold plastic, is cutting and grinding is also good. The current high-speed steel SKH-9 This is tungsten steel high-speed steel, suitable for manufacturing powerful cutting wear ASP-23 material, impact tools, and advanced die ASP-23 rod, screw die ASP-23 hardness, compared with miscellaneous tools required toughness and shape, cutter, drill and so on. ASP-23 Suppliers | Wuzhou ASP-23 | AsiaVest steel mold provided by the Dongguan City An Yongwei steel mold shop. Dongguan City An Yongwei mold steel shop (www.dgyongwei.com) strong, credible, in Dongguan, Guangdong special steel industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement AsiaVest innovative ideas will lead you hand into the mold steel and brilliant for a better future!