Chrome alloyed casting iron is divided into three types: high chrome alloyed casting iron(with the chromium content at 8-26%, the carbon content at 2.0-3.6%), medium chrome alloyed casting iron(with the chromium content at 4-6%, the carbon content at 2.0-3.2%), low chrome alloyed casting iron(with the chromium content at 1-3%, the carbon content at 2.1-3.6%). Its distinctive features is that the M7C3 type eutectic carbide micro hardness is HV1300-1800. The eutectic carbide is distributed on the base, martensite (the most hard metal matrix organization), in discontinuous network and isolation, which reduces the fragmentation of the matrix effect. As a result, the high chromium ball mill liner has high strength, strong toughness and good wear resistance performance, which represents the highest level of metal wear resistant materials.
Spec Available
Name | Chemical Elements（%） |
C | Si | Mn | Cr | Mo | Cu | P | S |
High Chrome Alloyed Liner
| 2.0-3.6 | 0-1.2 | 0-2.0 | 8-26 | ≤3.0 | ≤1.2 | ≤0.06 | ≤0.06 |
Middle Chrome Alloyed Liner
| 2.0-3.3 | 0-1.2 | 0-2.0 | 3-8 | ≤3.0 | ≤1.2 | ≤0.06 | ≤0.06 |
Low Chrome Alloyed Liner
| 2.1-3.6 | 0-1.5 | 0-2.0 | 1-3 | 0-1.0 | ≤1.2 | ≤0.06 | ≤0.06 |
Physical Property & Microstructure
Name
| Surface（HRC）
| Ak（J/cm2）
| Microstructure
|
High Chrome Alloyed Liner | ≥58 | ≥3.5 | M+C+A |
Middle Chrome Alloyed Liner
| ≥48 | ≥10 | M+C |
Low Chrome AlloyedLiner | ≥45 | ≥15 | M+C+P |
Martensite Carbide Austenite Pearlite |
Specification
Size | Hole Dia.（mm） | Liner Length（mm） |
≤40 | ≥40 | ≤250 | ≥250 |
Tolerance | +2 0 | +3 0 | +2 | +3 |
