ASTM A532 Mill Liners Introduction
High chromium white iron wear-resistant castings, cement polished board carbon and silicon content is low, carbon mainly exists in cementite form, fracture surface is silver white. The microstructure and properties are uniform, wear resistant, good plasticity and toughness. It is used to make parts with complex shape and can bear strong dynamic load
Product details
The standard of high chromium cast iron in the United States is ASTMA532M, and the content of high chromium cast iron (mass molecular number) specified by American Climax molybdenum Co., Ltd.
| Ingredient number | 12-1 | 15-3 | 15-2-1 | 20-2-1 | |||
Ultra-high carbon | High Carbon | Medium Carbon | Low Carbon | ||||
C | 3.0-3.5 | 3.6-4.3 | 3.2-3.6 | 2.8-3.2 | 2.4-2.8 | 2.8-3.5 | 2.6-2.9 |
Cr | 11-14 | 14-16 | 14-16 | 14-16 | 14-16 | 14-16 | 18-21 |
Mo | 0.5-1.0 | 2.5-3.0 | 2.5-3.0 | 2.5-3.0 | 2.4-2.8 | 1.9-2.2 | 1.4-2.0 |
Cu | <1.0 | - | - | - | - | 0.5-1.2 | 0.5-1.2 |
Mn | 0.5-0.8 | 0.7-1.0 | 0.7-1.0 | 0.5-0.8 | 0.5-0.8 | 0.6-0.9 | 0.6-0.9 |
Si | 0.5-0.8 | 0.3-0.8 | 0.53-0.8 | 0.3-0.8 | 0.3-0.8 | 0.4-0.8 | 0.4-0.9 |
S | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 | <0.05 |
P | <0.10 | <0.10 | <0.10 | <0.10 | <0.10 | <0.06 | <0.06 |
The maximum cross section of Pearlite does not appear during air cooling(mm) | - | 70 | 90 | 120 | 200① | >200 | |
HRC | Cast state | 60-67 | 51-56 | 50-54 | 44-48 | 50-55 | 50-54 |
Quenching | 62-67 | 60-65 | 58-63 | 60-67 | 60-67 | ||
Annealing | 40-44 | 36-42 | 35-40 | 40-44 | 38-43 | ||
Production Process
