2024-08-08
The problem with brake drum made in China
The material degree for brake drums is gray iron class 35 (HT250, FC250, GG25, ISO300, G250) with 1% copper (Cu). Their Brinell Hardness should be HB 180-250. Their weights are usually from 10kg to 45kg. They are widely used for the many kinds of vehicles such as cars, trucks, tractors etc.