Sir Robert Hadfield Manganese SteelBritish Metallurgist Sir Robert Hadfield named the steel he discovered in 1882 by heating an alloy containing 1.2% carbon (C) and 12% Manganese (Mn) at 1000 °C and then quenching it with water.
British Metallurgist Sir Robert Hadfield
In 1970, Norwegian Raufoss increased the Manganese ratio to 19% and the Carbon ratio to 1.45%, achieving higher impact resistance and abrasion resistance.
Today, Hadfield austenitic manganese steel is also used by adding elements such as 1.5-2.5% Cr, 0.9-1.8% Molybdenum (Mo), 3-4% Nickel (Ni).
Hadfield’s austenitic manganese steel is used in machinery used in the mining industry, quarrying, excavation, steel production, railways, concrete mixers, rock and ore crushers, coal crushers, ball mills, grinders, shredders, clay mills, cranes, trenching machines, cast iron machines, grinding machines, screening apparatus such as the parts of construction machinery that are exposed to wear and impact, with minor revisions in composition and heat treatments.
| Chemical Composition (%) | C | And | Mn | P | S | Cr | moon | Ni |
| GX120Mn13 | 1.05-1.15 | 0.3-0.9 | 11-14 | Max. 0.06 | Max. 0.045 | – | – | – |
| GX120MnCr13-2 | 1.05-1.35 | 0.3-0.9 | 11-14 | Max. 0.06 | Max. 0.045 | 1.5-2.5 | – | – |
| GX120Mn18 | 1.05-1.35 | 0.3-0.9 | 16-19 | Max. 0.06 | Max. 0.045 | – | – | – |
| GX120MnCr18-2 | 1.05-1.35 | 0.3-0.9 | 16-19 | Max. 0.06 | Max. 0.045 | 1.5-2.5 | – | – |
| GX120MnNi13-3 | 1.05-1.35 | 0.3-0.9 | 11-14 | Max. 0.06 | Max045 | – | – | 3-4 |
| GX120MnMo13-2 | 1.05-1.35 | 0.3-0.9 | 11-14 | Max. 0.06 | Max. 0.045 | – | – | 1.8-2.1 |
Chemical compositions of steels from Jaw Crusher materials
The hardness of GX120MnCr18-2 material after heat treatment is 290HB, and the hardness of GX120Mn13 material, which is standard Hadfield steel, is 205 HB after heat treatment.
The wear life of GX120MnCr18-2 steel is 20% longer than standard Hadfield steel. Ugur Makina uses this material in the manufacture of many crushers and crushers.
