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Chrome-molybdenum (Cr-Mo) alloy mill liners are high-performance wear components designed for the world’s most demanding grinding environments. Widely used in ball mills, rod mills, AG mills, and SAG mills, they serve as critical protective parts for mining, cement, metallurgy, and quarrying operations. Made from high-grade chromium-molybdenum alloy cast iron, these liners deliver an unrivaled combination of hardness, abrasion resistance, thermal stability, and mechanical strength—far outperforming conventional steel and manganese liners under heavy load, high pressure, and continuous abrasive stress.
The superior performance of Cr-Mo alloy liners comes from precisely engineered material chemistry. With controlled chromium content (1.5% –3.5%) to form hard, wear-resistant carbides and molybdenum to enhance hardenability, tensile strength, and high-temperature stability, our liners resist deformation, cracking, and premature failure even during long-term operation. Precision quenching and tempering bring surface hardness to 40-55HRC, achieving an ideal balance between rigidity and toughness. This makes them highly effective for processing highly abrasive ores such as iron ore, copper ore, gold ore, and granite.
Balanced Toughness & Wear Resistance
Parameter | AS 2074 L2B Specification | AS 2074 L2C Specification |
Hardness | 33-38 HRC (HB 310-350) | 38-42 HRC (HB 350-375) |
Impact Value | ≥10 J | ≥10 J |
Carbon Content | 0.55-0.65% | 0.70-0.90% |
Chromium Content | 0.80-1.50% | 1.30-2.40% |
Molybdenum Content | 0.20-0.40% | 0.20-0.40% |
Manufacturing Process | Sand casting + Air quenching | Sand casting + Air quenching |
Used as primary liners in autogenous and semi-autogenous mills, where they withstand impact from large ore particles while reducing wear on mill shells .
Ideal for secondary grinding stages in mining, processing iron ore, copper ore, and non-ferrous metals . The liners’ toughness prevents damage from grinding media collision.
Specially designed for mill discharge sections, where their impact resistance outperforms higher-carbon chrome-moly steels .
Each batch undergoes strict testing including hardness measurement, XRF chemical analysis, and impact toughness tests. SGS-certified reports are available upon request to ensure full transparency and compliance.
Upgrade your grinding system with reliable, high-performance chrome-molybdenum alloy liners and maximize productivity, profitability, and peace of mind.
Cr-Mo liners offer 40% higher wear resistance and double the impact tolerance of standard steel. The molybdenum additive enhances high-temperature strength, making them suitable for continuous mill operations .
Yes. We produce liners in custom thicknesses (10-100mm) and dimensions using client-provided mill drawings. Customization ensures optimal coverage and minimal gap between liner segments .
Each batch undergoes hardness testing (HB/HRC), chemical composition analysis (XRF), and impact toughness measurements. We also provide SGS-certified test reports upon request .
