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Product Description Sinter gear Technology: Powder Metallurgy Surface Treatment: Quenching, Polishing Material Standard: MPIF 35, DIN 30910, JIS Z2550 Density: 6.2 - 7.1 g/cm3 Macro Hardness: 40 - 80 HRA Tensile Strength: 1650 Mpa Ultimate Yield Strength(0.2%): 1270 Mpa Ultimate Size: Customized Size Powder metallurgy custom mini pinion, widely used in children's toys, air conditioning motors.