

| Models | Wear Parts |
|---|---|
| Models | CJ409-CJ412 |
| Wear Parts | Jaw plates, Cheek plates |
Manufactured from premium wear-resistant alloys including high-manganese steel, Cr-Mo alloy steel, and high-chrome cast iron.
CJ409-CJ412
Jaw plates, Cheek plates
Primary crushing surfaces for CJ-series jaw crushers; wedge-shaped crushing chamber with optimized nip angle for high throughput
| Grade | C | Si | Mn | Cr | Mo | Ni |
|---|---|---|---|---|---|---|
| Mn13Cr2 | 1.05-1.20 | ≤1.0 | 11.5-14.0 | 1.5-2.5 | — | — |
Excellent work-hardening capability; surface hardness increases under impact, ideal for moderate to high impact crushing conditions
| Grade | C | Si | Mn | Cr | Mo | Ni |
|---|---|---|---|---|---|---|
| Mn18Cr2 | 1.05-1.35 | ≤1.0 | 16.0-19.0 | 1.5-2.5 | — | — |
Higher Mn content provides superior work-hardening depth; 20-30% longer service life than Mn13 in high-compression applications
| Grade | C | Si | Mn | Cr | Mo | Ni |
|---|---|---|---|---|---|---|
| Mn22Cr2Mo | 1.10-1.40 | ≤1.0 | 20.0-24.0 | 1.5-2.5 | 0.30-0.60 | — |
Ultra-high Mn + Cr-Mo alloying; maximum work-hardening depth for extreme impact conditions; 30-50% longer life than Mn18
Protects CJ jaw crusher side walls from material abrasion and scalping
| Grade | C | Si | Mn | Cr |
|---|---|---|---|---|
| Mn13Cr2 | 1.05-1.35 | ≤1.0 | 11.0-14.0 | 1.5-2.5 |
Standard work-hardening steel; cost-effective for moderate impact applications
| Grade | C | Si | Mn | Cr |
|---|---|---|---|---|
| Mn18Cr2 | 1.05-1.35 | ≤1.0 | 16.0-19.0 | 1.5-2.5 |
Superior work-hardening depth; 20-30% longer life than Mn13 in high-compression applications
Safety toggle for CJ series; sets CSS and protects frame from overload damage
| Grade | C | Si | Mn |
|---|---|---|---|
| ASTM A27 | 0.25-0.35 | ≤0.60 | ≤0.70 |
General-purpose carbon steel casting for thrust plates and non-wear structural parts

