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truck brake drum
OE NO: 0310669110 suit for BPW truck or trailor
Vehicle type: heavy duty vehicle brake drum
Detail features:
1.Chemical specification
Item |
standards |
Brake drum |
C |
3.1--3.4 |
3.25 |
Si |
1.9--2.3 |
1.9 |
Mn |
0.6--0.9 |
0.8 |
P |
0.15 MAX |
0.08 |
S |
0.12MAX |
0.09 |
2.Physical propertities
Item |
standards |
Brake drum |
Tensile strength |
245 N/m㎡ MIN |
264 |
Hardness HB |
187--241 HB |
231 |
microstructure |
A 85% MIN+B5%MAX |
A 90% MIN +B 3%MAX |
Dynamic balance Disc |
260 g-cm MAX |
|
Dynamic balance Drum |
1300 g-cm MAX |
500 |
3.Apperance
The drum and disc’s surface checked and free of chills,shrink,porosity,slag,inclusions,cracks,cold pour ,burrs and any other imperfections .
