Powder metallurgy automotive synchronizer hub is one of the important parts in the synchronizer, and its working speed is generally 3500r/min transmission torque is 145n.m. Place of Origin: Hebei, China Brand Name: OEM Size: OEM Standard Size, Technical Drawing Processing: Sintering - Powder Metallurgy Material: Iron/copper/steel/OEM Material standard: MPIF 35, DIN 30910, JIS Z2550 Mechanical performance requirements: strength 394.2mpa Hardness: (high frequency quenching)> HRA60, (integrated quenching HRC40 Technical requirements: density 6.8g/cm3 The accuracy requirements: the accuracy of the tooth part is around 8 grades The appearance requirements: no cracks, impurities, bumps and other defects, the surface quality is good Quality control: 100 % inspection Application: Auto parts, motorcycle parts, machinery parts