Crusher Wear Parts Material Comparison — Mn vs Cr vs Ceramic vs Ti
Why material selection is the #1 decision
Material choice accounts for 60–80% of the performance difference between a wear part that lasts 3 months and one that lasts 8 months in the same crusher. Geometry, profile, and installation matter — but material is the foundation.
This guide compares the four major material families used in crusher wear parts, with specific recommendations for each crusher type and application.
Material families overview
1. Manganese Steel (Austenitic)
The original crusher wear material — invented by Sir Robert Hadfield in 1882. Still the most widely used family.
| Grade | Composition | Hardness (as-cast) | Work-hardened | Key property |
|---|---|---|---|---|
| Mn13 (Hadfield) | 12–14% Mn, 1.0–1.4% C | 200–240 HB | 450–550 HB | Maximum toughness |
| Mn18Cr2 | 17–19% Mn, 2–3% Cr | 250–300 HB | 500–600 HB | Balanced toughness + abrasion resistance |
| Mn22Cr2 | 21–23% Mn, 2–3% Cr | 280–330 HB | 520–620 HB | Higher toughness for severe impact |
| Mn18Cr2+Mo | 17–19% Mn, 2–3% Cr, 1–2% Mo | 300–340 HB | 540–640 HB | Molybdenum delays carbide precipitation |
How it works: Manganese steel is soft as-cast but work-hardens under impact — the surface layer transforms from austenite to martensite, creating a hard (500+ HB) wear surface over a tough (200 HB) core. This is the “self-sharpening” effect.
For detailed heat treatment science, see our manganese steel heat treatment guide.
Best for: High-impact applications — primary jaw crushers, primary cone/gyratory, impact crusher blow bars in recycling.
2. Chromium Iron (Martensitic / White Iron)
High-chromium cast iron with a martensitic matrix — the standard for high-abrasion applications.
| Grade | Composition | Hardness (HRC) | Key property |
|---|---|---|---|
| Cr15Mo3 | 14–17% Cr, 2–3% Mo | 55–60 | Good abrasion, moderate impact |
| Cr26 | 24–28% Cr, 1–2% Mo | 58–62 | Industry standard for high abrasion |
| Cr26+WC insert | Cr26 body + WC buttons | 62–66 | Maximum abrasion at insert points |
| Cr30 | 28–32% Cr | 60–64 | Extreme abrasion, very low impact tolerance |
How it works: Chromium forms hard M₇C₃ and M₂₃C₆ carbides (1,500–2,000 HV) embedded in a martensitic matrix (700–900 HV). The carbides resist abrasion; the matrix holds them in place.
Best for: High-abrasion, low-impact applications — secondary/tertiary cone liners, VSI rotor tips, impact blow bars in sand & gravel.
3. Ceramic Composite
The newest material family — ceramic particles (aluminium oxide or silicon carbide) embedded in a Cr26 or Mn18Cr2 matrix.
| Type | Ceramic content | Hardness (HRC equiv.) | Key property |
|---|---|---|---|
| Cr26 + ceramic insert | 20–30% Al₂O₃ | 65–70 | Extreme abrasion resistance |
| Mn18Cr2 + ceramic insert | 15–25% Al₂O₃ | 55–65 (tougher base) | Abrasion + moderate impact |
| Full ceramic tile | 80%+ Al₂O₃/SiC | 70–80+ | Maximum abrasion, zero impact tolerance |
How it works: Ceramic particles (2,000–3,000 HV) are far harder than silica (1,100 HV), so the abrasive feed cannot cut them. The metal matrix holds the ceramics and provides structural support.
Best for: Extreme abrasion — VSI rotor tips in silica granite, impact blow bars in high-silica applications, chute liners.
4. Titanium-Enhanced Alloys
Titanium carbide (TiC) or titanium micro-alloying to improve existing material families.
| Type | Ti content | Effect | Application |
|---|---|---|---|
| Mn18Cr2+Ti | 0.1–0.3% Ti | Refines grain structure, delays carbide precipitation | Manganese parts needing longer service life |
| Cr26+Ti | 0.5–1.0% Ti | Forms fine TiC dispersoids for additional abrasion resistance | Chromium iron in moderate-impact applications |
| TiC cermet | 30–50% TiC in steel matrix | Extreme wear resistance with better toughness than WC | VSI tips, chute liners |
Best for: Upgrading existing Mn or Cr parts — Ti-enhanced versions typically cost 10–20% more but deliver 20–40% longer life.
Head-to-head comparison
Abrasion resistance (higher = better)
Full ceramic tile ████████████████████ (20)
Cr26 + WC insert ██████████████████ (18)
Cr26 + ceramic █████████████████ (17)
TiC cermet █████████████████ (17)
Cr26 ██████████████ (14)
Cr15Mo3 ████████████ (12)
Mn18Cr2+Ti ██████████ (10)
Mn18Cr2 (work-hard) ████████ (8)
Mn22Cr2 (work-hard) ███████ (7)
Mn13 (work-hard) ██████ (6)Impact toughness (higher = better)
Mn13 ████████████████████ (20)
Mn22Cr2 ██████████████████ (18)
Mn18Cr2 █████████████████ (17)
Mn18Cr2+Ti ████████████████ (15)
Cr15Mo3 ██████████ (10)
Cr26+Ti ████████ (8)
Cr26 ██████ (6)
Cr26 + WC insert ████ (4)
Cr26 + ceramic ███ (3)
TiC cermet ██ (2)
Full ceramic tile █ (1)Cost per kg (relative to Mn18Cr2 = 1.0)
| Material | Relative cost | Cost per hour of life* |
|---|---|---|
| Mn13 | 0.85 | 1.0 |
| Mn18Cr2 | 1.0 | 1.0 |
| Mn22Cr2 | 1.15 | 1.05 |
| Mn18Cr2+Ti | 1.20 | 0.90 |
| Cr15Mo3 | 1.30 | 0.95 |
| Cr26 | 1.40 | 0.80 |
| Cr26+Ti | 1.55 | 0.75 |
| Cr26 + WC insert | 2.50 | 0.70 |
| Cr26 + ceramic | 2.80 | 0.65 |
| TiC cermet | 3.50 | 0.60 |
*Approximate, for medium-abrasion application. Actual varies by crusher type and feed material.
Key insight: Higher-cost materials often deliver lower cost per hour because their wear life increases more than their price. The cheapest part is rarely the most economical.
Selection by crusher type
Jaw crusher
| Application | Recommended | Why |
|---|---|---|
| Primary, hard rock (>200 MPa) | Mn18Cr2 or Mn22Cr2 | High impact needs toughness |
| Primary, moderate rock | Mn18Cr2 | Standard, proven |
| Primary, high abrasion (granite, quartzite) | Mn18Cr2+Ti | Ti adds abrasion resistance without sacrificing toughness |
| Secondary/tertiary | Cr26 or Mn18Cr2+Ti | Lower impact allows harder material |
See jaw plate selection guide for detailed profile and material recommendations.
Cone crusher
| Application | Mantle | Concave | Why |
|---|---|---|---|
| Primary (coarse) | Mn18Cr2 | Mn18Cr2 | High impact at nip point |
| Secondary | Mn18Cr2+Ti | Cr26 | Balance impact (mantle) with abrasion (concave) |
| Tertiary (fine) | Cr26 | Cr26 | Low impact, high abrasion |
| High-silica tertiary | Cr26+WC | Cr26+ceramic | Extreme abrasion |
See cone crusher liner guide for more.
Impact crusher
| Application | Blow bar | Why |
|---|---|---|
| Primary, recycling (mixed, tramp risk) | Mn18Cr2 | Maximum toughness for tramp metal |
| Primary, quarry (moderate abrasion) | Cr15Mo3 or Cr26 | Balance impact and abrasion |
| Secondary, high silica | Cr26+WC | Carbide inserts for extreme abrasion |
| Sand production, very high silica | Cr26+ceramic | Maximum abrasion resistance |
See blow bar life extension for detailed selection.
VSI crusher
| Application | Rotor tip | Why |
|---|---|---|
| Moderate silica (river gravel) | Cr26 | Standard, good value |
| High silica (granite) | Cr26+WC | Carbide inserts double life |
| Very high silica (quartzite) | Cr26+ceramic | Ceramic for extreme service |
| Tramp metal risk | Mn18Cr2 (outer) + Cr26 (inner) | Sacrificial outer positions |
Selection by feed material
| Feed material | Silica % | Abrasion level | Recommended material |
|---|---|---|---|
| Limestone | 5–15% | Low | Mn13 or Mn18Cr2 |
| Dolomite | 15–30% | Low-moderate | Mn18Cr2 |
| Basalt | 40–55% | Moderate | Mn18Cr2+Ti or Cr15Mo3 |
| Granite | 55–70% | High | Cr26 or Cr26+WC |
| Quartzite | 70–90% | Very high | Cr26+WC or Cr26+ceramic |
| River gravel (mixed) | 50–75% | High (variable) | Cr26 (VSI), Mn18Cr2+Ti (jaw/cone) |
| Slag (ferrous) | 20–40% | Moderate-high (sharp edges) | Cr26+Ti |
| Glass recycling | 70%+ | Extreme (sharp, abrasive) | Cr26+ceramic |
FAQ
Can I upgrade from Mn18Cr2 to Cr26 in the same crusher?
Yes, but only if the impact level allows it. In primary crushers with large feed (>300 mm), Cr26 may chip or spall. In secondary/tertiary crushers with smaller, pre-crushed feed, Cr26 is often a direct upgrade that extends life 30–50%.
Is ceramic worth the premium?
In high-silica applications (>70% SiO₂), ceramic inserts typically deliver 2–3× the life of bare Cr26 at 2× the cost — so cost per tonne is 25–50% lower. In moderate-abrasion applications, the premium isn’t justified — Cr26 or Cr26+WC is more cost-effective.
What’s the difference between WC inserts and ceramic inserts?
Tungsten carbide (WC) inserts: hardness 1,800–2,200 HV, good abrasion resistance, moderate impact tolerance. Ceramic (Al₂O₃) inserts: hardness 2,000–3,000 HV, excellent abrasion resistance, very low impact tolerance. Choose WC for applications with any impact; ceramic only for pure abrasion.
Does titanium really make a difference?
Yes, measurably. In Mn18Cr2+Ti vs. Mn18Cr2: Ti refines the austenite grain structure (smaller grains = harder to deform = slower wear) and delays carbide precipitation during cooling (more uniform properties). Typical improvement: 20–30% longer life for 10–20% higher price. See our materials page for available Ti-enhanced grades.
How do I test what material my current parts are?
- Hardness test — Brinell 200–330 HB = manganese; Rockwell 55–62 HRC = chromium iron
- Spark test — manganese sparks are long and bright; chromium sparks are short and red
- Chemical analysis — PMI (positive material identification) gun or lab spectrometry
- Magnet test — as-cast manganese is non-magnetic (austenitic); work-hardened surface becomes slightly magnetic; Cr26 is magnetic (martensitic)
Should I standardise on one material across all crushers?
No. Different crushers in your circuit operate at different impact levels and see different feed sizes. Standardising on Mn18Cr2 everywhere is safe but suboptimal — you’re leaving 20–30% potential life on the table in secondary/tertiary positions. Standardise on material families by position (Mn for primary, Cr for secondary, ceramic for VSI) rather than one grade everywhere.
Summary
Material selection is a trade-off between abrasion resistance and impact toughness. Manganese steel excels at toughness and work-hardening; chromium iron at abrasion; ceramic at extreme abrasion; titanium enhances both Mn and Cr. The optimal choice depends on your crusher type, position in the circuit, and feed material abrasivity. In most operations, a mixed-material strategy (Mn for primary, Cr for secondary, ceramic for VSI) delivers the lowest total cost per tonne.
Explore our materials catalogue for available grades, or contact our engineers for a free application-specific recommendation.