High Chromium Molybdenum Cast Hammer Heads For Hard Rock Quarry Equipment

High Chromium Molybdenum Hammer Heads are high-alloy white iron cast wear parts with balanced ultra-high hardness and impact toughness, specially designed for heavy-duty hard rock crushing in quarry, mine and aggregate production lines.

Product: High Chromium Molybdenum Wear Resistant Cast Hammer Heads

MOQ: 1 piece

Model NO: OEM Customized to match impact crusher models

Size: Manufactured strictly per customer drawings, installation dimensions

Machining Tolerance: ±0.02mm

Material: High Cr-Mo Wear Resistant Cast Iron (Ni-Hard / High Chromium White Iron)

Application: Hard rock quarry, granite/basalt/quartz crushing, mineral processing, construction aggregate production

Surface Treatment: Integral quenching & tempering heat treatment, shot blasting, drilling & precision machining of mounting holes

Manufacturing Process: Sand casting, mold forming, homogenization annealing, hardening heat treatment, finish machining

Factory: Professional mining crusher wear casting manufacturer

After-sales Service: 24-hour online technical support

Warranty: Quality guaranteed under normal rock crushing conditions

Certification: ISO 9001, CE

Standard: ASTM A532, GB/T 8263

Inspection: Hardness test, impact toughness test, abrasion loss test, metallographic inspection, UT non-destructive flaw detection, full dimensional inspection

Application Scope: Rotor hammer heads for primary & secondary impact crushers, suitable for crushing hard sharp rock, ore and construction waste aggregate

Delivery Time: 10–28 working days, negotiable for bulk orders

Transport Package: Steel frame reinforced seaworthy wooden case, anti-rust, shockproof, edge anti-collision protection

Advantages: High surface hardness, strong anti-abrasion, anti-breakage & anti-spalling, stable performance under repeated heavy rock impact, extended service life

C: 2.5–3.2, Cr: 14–20, Mo: 1.2–3.0, Ni: 0.8–2.2, Mn ≤1.2, Si ≤1.0, S ≤0.06, P ≤0.06

• Working Hardness: HRC 55–63
• Metallographic Structure: Martensite matrix + uniformly distributed hard chromium-molybdenum carbides
• Excellent anti-impact fatigue: Resist continuous high-speed striking of large hard rock blocks
• Low wear loss against sharp abrasive rock particles

1. Chromium-molybdenum composite alloy design greatly improves wear resistance compared to ordinary manganese steel hammers, effectively reducing thinning and material loss during rock crushing
2. Optimized casting structure with thickened striking surface, reinforced root to avoid fracture at mounting hole under heavy impact
3. Complete stress relief heat treatment eliminates casting internal stress, preventing early cracking during long-time cyclic striking
4. Good thermal stability, no surface softening caused by friction heat generated in continuous crushing operation
5. Customizable alloy proportion and hammer thickness according to rock hardness, feeding size and crusher output

Integral heavy hammer heads, double-end reversible hammers, composite wear-resistant hammer blocks for all series impact crushers used in hard rock quarries.

Q: What rocks are high chromium molybdenum hammer heads suitable for?

A: Perfect for hard abrasive materials such as granite, basalt, quartz stone, iron ore and lithium ore with high compressive strength.

Q: Can customize hammer size and mounting hole position?

A: Yes, full OEM production based on your crusher model, drawing and installation requirements.

Q: Can you supply full inspection documents?

A: Hardness, metallographic, abrasion resistance and UT flaw inspection reports can be provided for project acceptance.

1. Specialized smelting and heat treatment line for high chromium molybdenum wear castings
2. Optimized casting mold design to enhance impact resistance at hammer root
3. Strict raw material composition control to guarantee stable wear resistance of finished products
4. Stable mass supply for global quarry and aggregate crushing projects

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