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 Mn13 is a high wear-resistant manganese steel (HIGH MANGANESE STELL SCRAP) is a strong resistance to impact, abrasion and other wear-resistant materials, a large stress in the material the best choice. 
 The greatest feature of high-manganese steel are two: First, the greater the external shocks, the higher the wear resistance of its own surface; Second, with the gradual wear of the surface hardened layer, the new work-hardening layer is continuously formed. Mn13 rolled steel plate for strong shocks and high stress abrasion wear has an excellent wear resistance, in the course will not be broken, but with the ease of cutting, welding, bending and so easy machining properties. Traditional use of high chromium cast iron is just wear and tear on the mobile better wear resistance. Mn13 steel rolling equipment can reduce the use of wearing parts and save the cost of equipment maintenance costs, improve product competitiveness. The technical requirements for thickness 6-20mm of Mn13 steel, the relevant national and international standards are as follows. China's national standard of high manganese steel castings (GB/T5680-1998) grades are: ZGMn13-1, ZGMn13-2, ZGMn13-3, ZGMn13-4, ZGMn13-5; American ASTM standard austenitic manganese steel castings (ASTMA128 / A128M-1993) steel are: ASTM-A (UNS-J91109), ASTM-B-1 (UNS-J91119), ASTM-B-2 (UNS-J91129), ASTM-B-3 (UNS-J91139) 
 , ASTM-B-4 (UNS-J91149), ASTM-C (UNS-J91309), ASTM-D (UNS-J91459), ASTM-E-1 (UNS-J91249), ASTM-E-2 (UNS-J91339 ), ASTM-F (Note: If no other requirements, the general supply of steel castings A); Japan's national standard of high manganese steel castings [JISG5131 (1991)] grades are: SCMnH1, SCMnH2, SCMnH3, SCMnH11, SCMnH21; Russia cast Standard ΓOCT977-1988 high manganese steel are: 110Γ13π, 110Γ13X2BPπ, 110Γ13ΦTπ, 130Γ14 XMΦAπ, 120Γ10Φπ; ISO austenitic manganese steel castings to international standards [ISO13521: 1999 (E)] grades are: GX120MnMo7-1, GX110MnMo13-1, 
 GX100Mn13, GX120Mn13, GX120MnCr13 2, GX120MnNi13-3, GX120Mn17, GX90MnMo14, GX120MnCr17-2. 

 ?? 1, the source of high-manganese steel the first time in 1882 austenitic high-manganese steel, in 1883 the British Hadfield (R. A. Hadfield) to obtain a high-manganese steel patent. High-manganese steel according to the different uses can be divided into two categories: 2, manganese steel, wear-resistant steel of these 10% to 15%, carbon content is high, typically 0.90% to 1.50%, most of the 1.0 % or more. Its chemical composition (%): C0.90 ~ 1.50Mn10.0 ~ 15.0 Si0.30 ~ 1.0 S ≤ 0.05 P ≤ 0.10 amount up to such high-manganese steel, used to produce excavator shovel teeth, Cone crusher roll facing the wall and broken wall, jaw crusher bifurcated plate, ball mill liners, rail rut fork, hammer, hammer, etc. The composition of the cast structure of high manganese steel is usually caused by austenite, carbides and pearlite formed, sometimes containing a small amount of phosphorus eutectic. Carbon number for a long time, often on the grain boundaries reticular appear. So-cast high-manganese steel is very brittle, can not be used, the need for solution treatment. Commonly used method is the solid solution heat treatment, steel heated to about 1050 ~ 1100 ℃, thermal elimination of cast structure, to be single-phase austenite, and then water quenched to room temperature so that such organizations to maintain. After heat treatment of steel strength, ductility and toughness are significantly improved, so that such heat treatment method is also often referred to as water and tough treatment. Mechanical properties after heat treatment is: σb615 ~ 1275MPa σ 0.2340 ~ 470MPa ζ15% ~ 85% ψ15% ~ 45% aKl96 ~ 294J/cm2 HBl80 ~ 225 high-manganese steel after solution treatment there will be a small amount of undissolved carbides, when The small number of line test, you can still use. Austenitic high-manganese steel under impact loading, the metal surface of the plastic deformation. The result of strain hardening in the deformed layer have significant hardening, the surface hardness increased significantly. Low-impact load, you can reach HB300 ~ 400, high impact loads, you can reach HB500 ~ 800. With the impact load of different surface hardening depth of up to 10 ~ 20mm. High hardness of the hardened layer can resist impact abrasive wear. Strong impact in the high-manganese steel under the conditions of abrasive wear, has excellent anti-wear performance, Guchang for mining, building materials, thermal power and other mechanical equipment, the production of wear-resistant parts. In the low-impact working conditions, little effect due to work hardening, high-manganese steel properties of the materials can not play. China's high-manganese steel grades used and their application range is: ZGMn13-1 (C 1.10% ~ 1.50%) for low-impact pieces, ZGMn13-2 (C1.00% ~ 1.40%) for common parts, ZGMn13- 3 (C0.90% ~ 1.30%) for complex parts, ZGMn13-4 (C0.90% ~ 1.20%) for high-impact pieces. Above four kinds of manganese steel grades were 11.0% to 14.0%. The impact loading of the cold deformation process, due to a significant increase in dislocation density, dislocation of the delivery, dislocation pile-dislocations and solute atoms and the interaction of the steel to be strengthened. This is an important cause of hardening. Another important reason is the high-manganese austenitic low stacking fault energy, deformation prone to stacking faults, and thus the formation of ε martensite and deformation twins have created the conditions. Conventional components of the deformation of high manganese steel hardened layer can often see the high density of dislocations, dislocation pile-and tangles. ε martensite and deformation twins appear difficult to deformation of the steel, especially the latter a greater role. The above factors make high manganese steel to be hardened layer high degree of strengthening, the hardness increased significantly. Easily hardening high manganese steel, making it difficult to process, the vast majority of casting, forging method with a very small amount of processing. Better performance of high manganese steel casting. Low melting point of steel (about 14 () () ℃), liquid steel, solidus temperature interval smaller (about 50 ℃), low thermal conductivity of steel, so the molten steel flow, and easy-casting. Coefficient of linear expansion of high-manganese steel is 1.5 times as pure iron, two times for the carbon steel, so the casting volume shrinkage and linear shrinkage rate of large, prone to stress and cracks. To improve the performance of high-manganese steel alloy of many micro-alloying, carbon manganese adjustment and precipitation strengthening treatment research, and has been applied in production practice. The emergence of metastable austenitic manganese steel can be significantly reduced compared with gao Bureau of carbon steel, manganese steel and to the strain hardening rate of increase, applicable to high-and low-impact load working conditions, which is a high manganese Steel's new development. 
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