Grey Iron Brake drum for Toyota OEM1.Metertrial:gray iron HT250/GG25=heavy truck brake drum
2.Weight:20kg-85kg
3.Chermical composition:
C:3.0-3.3% Si:1.6-1.9% Mn:0.7-0.9%
P:<0.12% S<0.12%
4.Mechanics performance:
Main body degree of hardness:163-255HBS
Testing rod tensile strength:>=220 Serial Number:
42431-3619042431-2608143512-8730543512-0K08042431-3520042431-2619042431-6002043512-2608043512-2621043512-3157043512-8730542431-02220/02190/1226042431-3201043512-02270/02240/1271043512-0504042431-02250/42431-02110/12310/1918453443512-05050/0507043512-20580/20470/43512-20700/43512-2101043512-0F010/0F030/12680/02190/0508042431-2019043512-30220/3026043512-12350/43512-12360/43512-12580/43512-1259042431-30160/30130/3021043512-12230/12500/OG91042431-30280/0N010/42431-0P01042431-2008043512-4203043512-05010/05020/20500/2057042431-42040/4204143512-1255042431-42060/42431-0R01043512-2212042431-0701042431-24010,2210042431-0703042431-2209043512-30270/3013043512-2208042431-3022043512-2205143512-30110,43512-30090,43512-30091,43512-30112/3011142431-2208043512-21110/02111,43512-0211043512-35080/43512-35120
