The core component of a hammer crusher is the hammer, which is mounted on the hammer shaft of the rotor and strikes the material at high speed to achieve the desired particle size. It is widely used in industrial crushing fields such as mining, coal, etc. The material of the hammer needs to balance the wear resistance of the head and the toughness of the handle. Common types include forged hammers, high manganese steel hammers, high chromium alloy hammers, and hard alloy hammers. Materials brand such as ZGMN18CR2, ZGCR26 etc. Among them, high chromium alloy hammers combine high hardness and impact resistance through composite processes, significantly improving their service life compared to traditional materials.
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Crusher hammers are irreplaceable core impact wear parts that undertake direct high-energy
striking to crush raw ores, rock, construction waste and cement clinker. Our production system adopts two mature forming processes: precision casting for high-manganese steel and high-chromium iron series, and integrated forging for customized alloy steel grades. Every batch undergoes standardized multi-stage heat treatment to form compact, pore-free and shrinkage-free internal metallographic structures, fundamentally lowering spontaneous fracture risk. Verified by long-term field tracking, the average breakage failure rate of our hammers is controlled below 0.5% per 1,000 operating hours, delivering stable continuous production for aggregate quarries, cement factories, metal mines, coal washing plants and construction waste recycling stations.
High manganese steel (Mn13, Mn18Cr2): Ideal for heavy-impact primary crushing. The surface continuously work-hardens under repeated striking, raising surface hardness above 500 HB to resist severe impact deformation.
High-chromium cast iron (Cr15, Cr20, Cr26): Applied to secondary/tertiary fine crushing and cement clinker processing, featuring outstanding anti-abrasion capacity for low-impact, high-friction scenarios.
Cr-Mo / Cr-Mo-V alloy steel: Balances impact toughness and surface hardness (50–55 HRC), perfectly suited for medium-hard mixed rock with alternating impact and abrasion loads.
Metal-ceramic composite & tungsten carbide embedded hammers: Composite wear-resistant layers are added to high-striking areas, doubling service life without sacrificing overall hammer toughness.
Stainless steel composite hammers: Developed for high-purity non-metallic mineral production to cut iron pollution.
Split replaceable head hammers for large impact crushers: Only the worn striking tip needs replacement instead of the whole hammer body, slashing long-term spare part expenditure by around 40% compared with integrated monolithic hammers.
Symmetrical reversible integrated hammers: Operators can flip the hammer 180° when one side wears thin, doubling the effective service cycle of a single hammer unit.
Item | Specification |
Material Grade | Mn18Cr2, ZGCR26 |
Hardness | 25-35HRC(MN18CR2);55-58HRC,ZGCR26 |
Impact Value | ≥18 J/cm² |
Weight Range | 2-50kg/piece |
Length Range | 150-800mm |
Heat Treatment | Quenching + Tempering |
1. Limestone & Cement Clinker Crushing
For single-stage hammer and impact crushers processing limestone, Mn18Cr2 hammers pre-embedded with tungsten carbide rods have delivered over 1.1 million tonnes throughput per set in a large Anhui aggregate quarry, more than doubling the service life of standard Mn13 hammers. The annual hammer replacement frequency dropped from six times to 2.5 times, greatly reducing production halts. For cement clinker crushing, high-chromium composite blow bars lift single-set throughput from 80,000 tonnes to 180,000 tonnes while optimizing clinker particle shape and suppressing excess fine dust.
Quartz-bearing hard abrasive ores require Cr26 high-chromium or carbide-inserted alloy steel hammers. A domestic iron mine upgraded to our customized composite hammers and raised single-set throughput from 12,000 tonnes to 25,000 tonnes, cutting per-ton hammer wear cost by over 40% and stabilizing mill feed particle gradation.
Medium-toughness Cr-Mo alloy hammers resist damage from occasional tramp iron mixed in coal, stably producing qualified 0–50 mm finished material. Uniform particle size improves boiler combustion efficiency and lowers ash residue treatment pressure for thermal power supporting facilities.
Granite, basalt and river pebble crushing adopts metal-ceramic composite hammers with excellent anti-abrasion performance. A Southeast Asian granite aggregate plant upgraded to our tailored solution and extended hammer service life from 480 hours to 1,100 hours with negligible edge chipping. For C&D waste mixed with steel rebar, thickened high-impact zone manganese steel hammers avoid sudden cracking from uncrushable foreign objects.
Special stainless steel and ceramic-reinforced hammers minimize iron element stripping, controlling Fe₂O₃ impurities to meet strict standards for battery raw materials and optical-grade quartz, eliminating downstream purification costs caused by iron contamination.
Primary coarse crushing with large feed and hard ore: Prioritize high manganese steel or carbide composite manganese hammers, relying on work-hardening impact resistance.
Secondary fine crushing, clinker and low-impact abrasive materials: Select high-chromium cast iron series for ultra-long wear life.
Medium-hard mixed rock with frequent tramp iron: Adopt Cr-Mo-V alloy steel for balanced toughness and wear resistance.
High-purity mineral production lines without iron pollution: Choose stainless steel composite or ceramic-reinforced hammers.
Large-capacity rotary impact crushers: Deploy split replaceable-head hammers to cut daily maintenance labor.
Small and medium fixed hammer crushers: Adopt symmetrical reversible hammers to maximize single-unit utilization.
For plant daily operation, regular dynamic balance inspection is required after hammer replacement; timely adjust rotor speed and feed volume to match hammer wear resistance. Avoid over-feeding oversized ore to prevent premature hammer cracking.
When purchasing crusher hammers, buyers should not only compare unit prices but evaluate full-lifecycle cost including service life, replacement frequency, maintenance labor and downtime losses. Our factory supports batch customized production, small trial order testing and full third-party quality inspection reports before delivery. We provide complete material test certificates, heat treatment records and dynamic balance test data for every shipment. Long-term cooperative cement plants, mining groups and aggregate manufacturers enjoy stable price agreements and priority delivery schedules, with dedicated after-sales technical engineers available for on-site condition diagnosis and hammer optimization adjustment.
