Product Description Sinter gear Technology: Powder Metallurgy Surface Treatment: Quenching, Polishing Material Standard: MPF series iron powder/alloy Density: 6.2 - 7.1 g/cm3 Macro Hardness: 20 - 43 HRC Tensile Strength: 1650 Mpa Ultimate Yield Strength(0.2%): 1270 Mpa Ultimate Size: Customized Size Surface: grinding, spur teeth Certificate: ISO9001/TS16949