Products Description
High manganese steel castings are classic heavy-impact wear-resistant cast steel products. Thanks to their unique austenitic microstructure, they achieve rapid surface work-hardening under heavy-impact abrasive-wear working conditions, forming an ideal wear-resistant structure featuring a hard outer layer and a tough inner core. Processable into various special-shaped wear-resistant spare parts for different working-condition requirements, they fit core equipment across mining, building-material, electric power and metallurgy industries. Boasting stable long-term service performance, they are mature material options widely adopted in the industrial wear-resistance field.
Product Advantages
Excellent Wear Resistance
The surface hardens rapidly under heavy-impact conditions. The material grows more wear-resistant as wear proceeds, and its overall anti-wear performance far outperforms ordinary carbon steel.
01
Superior Toughness
The core retains high toughness, allowing the product to withstand heavy impact loads and resist failures including fracture and deformation.
02
Wide Working-Condition Compatibility
Material proportions can be flexibly adjusted for diverse wear scenarios to satisfy application demands for various heavy-impact abrasive-wear conditions.
03
Strong Impact Resistance
It resists fragmentation under continuous impact and extrusion, reducing risks of unexpected equipment failures during long-time operation.
04
Extended Service Life
Under proper working conditions, its service cycle is substantially longer than that of conventional wear-resistant parts, effectively cutting down the frequency of spare-part replacements.
05
Product Image
Working Principles
After dedicated heat treatment, the product obtains a single-phase austenitic microstructure. Heavy impact triggers rapid generation of a high-hardness hardened layer on its surface.
When the surface layer wears off, fresh base material keeps forming new hardened layers to maintain stable wear-resistant performance.
The high-toughness core absorbs impact loads while the surface hardened layer counteracts material abrasion, balancing these two critical properties.
Qualified heat-treatment processes ensure uniform internal microstructure and prevent performance degradation throughout long-term service.
Relevant Data
| Material Grade | Chemical Composition (Typical) | Hardness (as delivered) | Impact Toughness | Application |
| Mn13Cr2 | C:1.1-1.4%, Mn:12-14%, Cr:1.5-2.5% | 200-240 HB | ≥150 J/cm² | Jaw plates, cone liners (medium impact) |
| Mn18Cr2 | C:1.2-1.5%, Mn:17-19%, Cr:2.0-2.5% | 210-250 HB | ≥120 J/cm² | Heavy-duty cone mantles, gyratory parts |
| Cr26 (High Chrome) | C:2.6-3.0%, Cr:25-28%, Mo:0.5-1.0% | 58-62 HRC | ≥40 J/cm² | Blow bars, impact plates, hammer heads |
| Mn22Cr2 | C:1.2-1.5%, Mn:21-23%, Cr:2.0-3.0% | 220-260 HB | ≥100 J/cm² | Primary jaw crushers with very high impact |
Application Scope
Mining Industry
Serves as wear-resistant spare parts for core equipment such as crushers and ball mills to resist ore impact and material abrasion.
Electric Power and Metallurgy Industry
Compatible with crushing and conveying equipment in thermal power and metallurgical industries, coping with heavy-wear conditions under elevated-temperature environments.
Building-Material Production Industry
Applied to crushing and grinding equipment in cement production lines to endure continuous material impact and abrasion.
Engineering Equipment Industry
Delivers wear-resistant support for digging, loading and crushing components of construction machinery to withstand abrasion caused by high-intensity operations.
FAQ
Q: Are high manganese steel castings suitable for all wear scenarios?
A: They work best under heavy-impact abrasive-wear working conditions. Their wear-resistant advantages cannot be fully brought into play in low-impact scenarios.
Q: What should be noted during installation?
A: Mounting surfaces shall closely fit the equipment base. Forcible assembly by hammer striking must be avoided to prevent invisible internal cracks.
Q: Can minor local defects be repaired by welding?
A: Special electrodes for high manganese steel must be used with strictly controlled welding procedures. Rapid post-weld cooling is required to avoid embrittlement.
Precautions
Do not strike the product body directly with heavy hammers during assembly, as hidden internal damage may occur and shorten service life.
Long-term operation under impact-free low-load conditions disables work-hardening characteristics and will result in abnormal wear.
Welding operations must not be carried out by unprofessional personnel, so as to prevent local embrittlement and cracking.
Prolonged continuous operation at excessive temperatures will compromise internal microstructure stability and trigger premature performance degradation.
Factory Environment
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