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Chromium Alloy Liners are premium wear-resistant components for rod mills, ball mills, and AG mills, engineered from high-chromium cast iron (10-26% CR) . These liners feature M7C3 eutectic carbides (HV 1300-1800) dispersed in a martensitic matrix, delivering industry-leading wear resistance for large-scale cement and mining operations. Our liners are customizable to match mill dimensions and operating conditions.
High-chromium grades (10-26% Cr) achieve a hardness of >58 HRC, with wear resistance exceeding Cr-Mo liners by 50% . The broken network carbide structure reduces matrix splitting, even under continuous abrasion.
Chromium content (up to 26%) enhances oxidation resistance, allowing use in environments up to 600°C . Low sulfur/phosphorus levels (<0.1%) prevent corrosion in wet milling applications.
Available in grades (Cr10 to Cr26) for rod mills, ball mills, and TBM machines, with custom thicknesses (15-80mm) . Compatible with both domestic and imported mill brands.
Parameter | Cr12 Grade | Cr26 Grade |
Chromium Content | CR>10 | 23.0-28.0% |
Hardness | >58 HRC | >58 HRC |
Impact Strength | >4 J/cm² | >4 J/cm² |
Carbon Content | 1.5-4.5% | 1.5-4.5% |
Heat Resistance | Up to 550°C | Up to 600°C |
Wear Rate (ASTM G65) | <0.20 g | <0.18 g |
Used as shell liners in large-scale cement ball mills, grinding clinker to fine powder while withstanding 24/7 operation .
Ideal for SAG mills processing granite, basalt, and diabase, where high abrasion resistance reduces liner replacement frequency .
Custom liners for tunnel boring machines, protecting components from rock abrasion in construction and mining tunneling .
Chromium Alloy Liners offer superior wear resistance but lower impact toughness. Choose chromium liners for abrasive, low-impact applications (cement mills) and Cr-Mo liners for high-impact scenarios (SAG mill discharge sections) .
Yes. Cr26 and Cr30 grades tolerate temperatures up to 600°C, making them suitable for drying-milling combined systems in cement production .
We offer custom dimensions, hole patterns, and chromium grades based on mill drawings. Surface treatments (e.g., chromium carbide overlay) are available for extreme-wear zones .