4-Shaft Shredder Blade Materials Guide
Selecting the right blade material for a 4-shaft shredder requires balancing hardness, wear resistance, and toughness. Below are the common options with their characteristics and applications:
High Carbon Steel
Cost-effective HRC50-55 0.42%-0.50% Carbon
- Advantages: Low cost, suitable for soft materials
- Properties: Hardness reaches HRC50-55 after quenching
- Applications: Cardboard, plastic films, other low-hardness materials
- Limitations: Average wear resistance, requires frequent sharpening when processing hard materials
Alloy Tool Steel (e.g., Cr12MoV)
Chromium/Molybdenum/Vanadium HRC58-62 3-5× Wear Resistance
- Advantages: Excellent edge retention, mainstream mid-range option
- Properties: Alloy elements enhance hardness and wear resistance
- Applications: Plastic bottles, wood, thin metal sheets
- Performance: 3-5 times more wear resistant than high carbon steel
High-Speed Steel
Tungsten/Chromium HRC63-65 Red Hardness
- Advantages: Maintains hardness at high temperatures
- Properties: Excellent red hardness, high temperature performance
- Applications: Electronic waste, materials with metal impurities
- Limitations: Lower toughness, avoid heavy impact
Tungsten Carbide Coated Blades
WC Coating HV1800-2200 5-8× Wear Resistance
- Advantages: Extreme wear resistance, long service life
- Properties: Tungsten carbide coating on alloy steel substrate
- Applications: Glass fiber, rubber, aluminum alloys
- Considerations: Higher cost but excellent for high-wear applications
Bimetallic Composite Blades
Dual Material Wear + Impact Resistant Hybrid Solution
- Advantages: Combines wear resistance with impact toughness
- Construction: Hard alloy cutting edge with tough steel body
- Applications: Mixed materials like municipal waste, industrial scrap
- Benefits: Reduces chipping risk in demanding applications
Material Selection Guidelines
- Soft materials (paper, plastic): High carbon steel is sufficient
- Medium-hard materials (wood, thick plastic): Alloy tool steel recommended
- High-hardness/high-wear materials (metal, glass fiber): Consider tungsten carbide or bimetallic blades
Always balance performance requirements with cost considerations when selecting shredder blade materials.
