Uni-Brakes brand of high quality brake drums measure up to the
SAE J431-G3000 quality standard.
Our manufacture is operated under strict quality control system of ISO9002 & QS9000 & VDA6.1, 100% inspections are conducted for material, structure, dimension, dynamic balance and trace.
Brake Drum Mechanical properties:
1) Tensile strength: 210Mpa
2) Hardness: HB187 - 241
3) Statement of graphite: 90% of the graphite is lamella, with a remainder of no more than 10% and lamella graphite mostly type "A"
4)Length of graphite: According to ASTM A247 4 grade - 5 grade
5)Pearlite: More than 90%
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