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Manganese Steel Jaw Crusher Wear Parts
,Casting Jaw Plate Wear Resistant
,Spare Jaw Wear Components
We supply jaw plates compatible with crusher brands worldwide, and offer custom design and manufacturing tailored to your specific operating conditions.
Jaw plates are the core wear-resistant spare parts of a jaw crusher, with each set consisting of a movable jaw plate and a fixed jaw plate. Available materials include high manganese steel, ultra-high manganese steel, alloy steel, and high manganese steel with embedded alloy bars — the optimal material can be selected based on your working conditions.
| Usage | Crushing | Place of Origin | China |
| Working Process | casting for jaw plate | Color | Required for fixed jaw plate |
| Packaging Details | regular packing | Material | High Manganese Steel |
| Model Number | Customized | Appearance | Smooth |
| Supply Ability | 300 sets per month | Certification | ISO/CE |
| Brand Name | SXYH | Payment Terms | L/C, T/T |
| Heat Treatment | Anneal, quenching, tempering | Advantage | high impact toughness and wear resistance |
| Product name | jaw plate | Price | negotiable |
| Delivery Time | 1-2 months | Minimum Order Quantity | 1 set |
| Application | jaw crusher | Testing | Hardness, flaw detector test |
The jaw plate (also known as the toggle plate or tooth plate) is the primary wear component of a jaw crusher. Its service life and crushing efficiency depend largely on the material from which it is cast. Choosing the right jaw plate material ensures optimal wear resistance, impact toughness, and cost-effectiveness for your specific operating conditions.
Below we introduce two widely used jaw plate materials: High Manganese Steel and Medium Alloy Steel, along with their chemical compositions and mechanical properties.
Medium alloy structural cast steel is an iron-carbon alloy produced by adding one or more alloying elements to plain carbon steel. By varying the alloying elements and applying appropriate melting and heat-treatment processes, the material can be engineered to achieve a combination of high strength, high toughness, excellent wear resistance, corrosion resistance, low-temperature resistance, high-temperature resistance, and even non-magnetic properties.
Medium alloy steel is suitable for manufacturing wear parts that require a balanced combination of strength and toughness under diverse working conditions. It is also used for main structural castings that must withstand dynamic loads.
| Grade | C | Si | Mn | Cr | Mo | S | P | Al |
|---|---|---|---|---|---|---|---|---|
| ZG42CrMo | 0.38–0.43 | 0.15–0.35 | 0.75–1.00 | 0.80–1.10 | 0.15–0.25 | <0.04 | <0.035 | – |
| ZG35CrMo | 0.32–0.40 | 0.17–0.37 | 0.40–0.70 | 0.80–1.10 | 0.15–0.25 | ≤0.035 | ≤0.035 | – |
| ZG38CrMoAl | 0.35–0.42 | 0.20–0.45 | 0.30–0.60 | 1.35–1.65 | 0.15–0.25 | ≤0.04 | ≤0.04 | 0.7–1.1 |
| ZG40Cr | 0.37–0.45 | 0.17–0.37 | 0.50–0.80 | 0.80–1.10 | – | – | – | – |
| ZG30Mn2SiCrMo | 0.25–0.35 | 0.40–0.80 | 1.20–1.60 | 1.35–1.65 | 0.20–0.50 | ≤0.04 | ≤0.04 | – |
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Reduction of Area (%) | Impact Energy (KV2, J) |
|---|---|---|---|---|---|
| ZG42CrMo | ≥1080 | ≥930 | ≥12 | ≥20 | ≥24 |
| ZG35CrMo | ≥985 | ≥835 | ≥12 | ≥20 | ≥24 |
| ZG38CrMoAl | ≥980 | ≥835 | ≥14 | ≥20 | ≥24 |
| ZG40Cr | ≥980 | ≥785 | ≥9 | ≥20 | ≥24 |
| ZG30Mn2SiCrMo | ≥1500 | ≥1300 | ≥3 | – | ≥24 |
High manganese steel is a high-alloy steel containing more than 10% manganese. Its defining characteristic is work-hardening under impact:
- The greater the compressive stress or impact load, the more readily a hardened layer forms on the surface, resulting in superior wear resistance.
- As the work-hardened surface gradually wears away, a new hardened layer continuously forms beneath it under ongoing impact and compression.
This self-renewing hardening mechanism makes high manganese steel ideal for wear parts subjected to prolonged high-impact loading. It is widely used in crushing and grinding equipment across the metallurgy, mining, building materials, railway, power, and coal industries.
| Grade | C | Si | Mn | Cr | S | P |
|---|---|---|---|---|---|---|
| ZG120Mn13 | 1.05–1.35 | 0.3–0.9 | 11–14 | – | ≤0.06 | ≤0.04 |
| ZG120Mn13Cr2 | 1.05–1.35 | 0.3–0.9 | 11–14 | 1.5–2.5 | ≤0.06 | ≤0.04 |
| ZG120Mn17Cr2 | 1.05–1.35 | 0.3–0.9 | 16–19 | 1.5–2.5 | ≤0.06 | ≤0.04 |
Note: Trace amounts of V, Ti, B, and rare earth (RE) elements may be added. Other grades of high manganese steel can be produced upon request.
| Grade | Yield Strength ReH (MPa) | Tensile Strength Rm (MPa) | Elongation A (%) | Impact Energy KU2 (J) | Hardness (HB) |
|---|---|---|---|---|---|
| ZG120Mn13 | – | ≥685 | ≥25 | ≥118 | ≤300 |
| ZG120Mn13Cr2 | ≥390 | ≥735 | ≥20 | – | ≤300 |
| Operating Condition | Recommended Material |
|---|---|
| High-impact crushing of hard, abrasive ores (e.g., granite, basalt, iron ore) | High Manganese Steel (ZG120Mn13 / ZG120Mn13Cr2) |
| Moderate-impact applications requiring higher initial hardness | Medium Alloy Steel (ZG42CrMo / ZG35CrMo) |
| Extreme wear with lower impact loads | ZG30Mn2SiCrMo (ultra-high-strength medium alloy) |
Tip: High manganese steel performs best when sufficient impact energy is present to trigger work-hardening. In low-impact scenarios, a medium alloy steel with higher as-cast hardness may deliver longer service life.
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