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Manganese steel jaw plates for mining crushers

Mn18Cr2 Manganese Steel Jaw Plates for Jaw Crushers

Wear-Resistant Fixed & Swing Jaw Plates for Mining and Quarrying

- Material: Mn18Cr2 High Manganese Steel
- Base Hardness: HB 180–220 (Published Specification)
- Plate Types: Fixed Jaw Plate & Swing Jaw Plate
- Performance: High Impact Toughness & Work Hardening
- Applications: Mining, Quarrying & Aggregate Crushing
- OEM Service: Custom Tooth Profiles, Dimensions & Drawings

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Quantity:
Material:	Mn13 Mn18 Mn22
Color:	Red
Size:	Customized
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Model:
C120
Brand:
QR
Code:
002

Product Overview

Qirun supplies Mn18Cr2 high manganese steel jaw plates for mining, quarrying, and aggregate crushing equipment. Available as fixed and swing jaw plates, these wear-resistant castings are designed to withstand repeated impact, compression, and abrasion during primary crushing.

Mn18Cr2 manganese steel combines high impact toughness with work-hardening capability, making it suitable for crushing hard rock and abrasive mineral materials.

Qirun supports OEM replacement jaw plates with customized tooth profiles, dimensions, and mounting configurations based on customer drawings and crusher requirements.

Technical Specifications

Parameter	Specification
Product Name	Mn18Cr2 Manganese Steel Jaw Plates
Brand	Qirun / QR
Product Model	C120 (Published Model; Compatibility to Be Confirmed)
Product Code	002
Main Material	ZGMn18Cr2 High Manganese Steel
Alternative Materials	Mn13Cr2, Mn22Cr2
Base Hardness	HB 180–220 (Published Range)
Published Tensile Strength	≥685 MPa
Plate Types	Fixed Jaw Plate, Swing Jaw Plate
Product Category	Jaw Crusher Wear Parts
Main Properties	Impact Toughness, Work Hardening, Wear Resistance
Tooth Profiles	Corrugated, Toothed or Custom Profiles
Size	Customized According to Drawings
Manufacturing	Casting, Heat Treatment and Machining as Required
Applications	Mining, Quarrying, Aggregate Production
OEM Support	Custom Dimensions, Materials and Replacement Parts
Quality Inspection	Material and Dimensional Inspection as Agreed

The hardness and tensile strength values are from the existing product information. Actual specifications and compatible crusher models should be confirmed against the selected material grade and technical drawings.

Key Features of Mn18Cr2 Jaw Plates

1. High Impact Toughness

Mn18Cr2 high manganese steel is designed for wear components subjected to repeated crushing loads.

Its austenitic structure provides toughness that helps jaw plates withstand impact and compression during primary crushing operations.

This material is suitable for demanding applications involving hard rock and mineral feed materials.

2. Work-Hardening Wear Resistance

High manganese steel can develop increased surface hardness under repeated impact and compressive loading.

This work-hardening behavior helps the crushing surface resist wear while the underlying material retains toughness.

Actual wear resistance depends on material composition, heat treatment, rock abrasiveness, and operating conditions.

3. Fixed and Swing Jaw Plate Options

Qirun supplies jaw plate configurations for stationary and movable crushing surfaces.

Fixed Jaw Plate

The fixed jaw plate is installed on the stationary side of the crusher chamber. It provides the opposing surface against which feed material is compressed.

Swing Jaw Plate

The swing jaw plate is mounted on the moving jaw assembly. Its reciprocating movement creates the compressive force needed to fracture incoming rock.

Both components require suitable tooth geometry, mounting dimensions, and material properties for reliable operation.

4. Customized Crushing Tooth Profiles

Jaw plate tooth profiles affect material gripping, crushing chamber behavior, and wear distribution.

Qirun supports manufacturing according to customer-specified profiles, including:

Corrugated tooth surfaces
Coarse crushing teeth
Custom tooth pitch and height
Customer-specified crushing surface geometry
Replacement profiles based on technical drawings

Final tooth geometry should match the intended crusher configuration and operating conditions.

5. OEM Replacement Jaw Plate Manufacturing

Qirun supports replacement jaw plate production for mining and quarry crushing equipment.

Customers can submit original part numbers, technical drawings, or existing component specifications for manufacturing review.

Custom requirements may include plate dimensions, tooth profiles, installation surfaces, and manganese steel grades.

Mn18Cr2 Manganese Steel Material Composition

Mn18Cr2 is a chromium-alloyed high manganese steel grade commonly used for impact-resistant crusher wear parts.

Qirun also lists Mn13Cr2 and Mn22Cr2 as alternative material specifications.

Chemical Composition of Manganese Steel Jaw Plates

Material Grade	Carbon (C)	Manganese (Mn)	Chromium (Cr)	Silicon (Si)
ZGMn13Cr2	0.9–1.3%	11.0–14.0%	1.5–2.5%	0.3–1.0%
ZGMn18Cr2	1.1–1.5%	16.5–19.0%	1.5–2.5%	≤0.8%
ZGMn22Cr2	1.1–1.4%	20.0–22.0%	1.5–2.5%	≤0.8%

These are the published chemical composition ranges. Final material requirements should follow the agreed product specification.

Mn13Cr2 vs. Mn18Cr2 vs. Mn22Cr2 Jaw Plates

Material	Main Characteristics	Application Considerations
Mn13Cr2	Impact toughness and work-hardening capability	Suitable for selected impact-intensive crushing
Mn18Cr2	Combination of toughness and wear resistance under suitable loads	Hard rock and abrasive mining applications
Mn22Cr2	Higher nominal manganese content	Selected demanding conditions requiring material evaluation

Higher manganese content does not automatically result in longer wear life. Crushing pressure, feed properties, alloy chemistry, and heat treatment influence actual performance.