42CrMo4 is a steel for quenching and tempering, which has a good combination of strength and toughness in the quenched and tempered condition. After the oil quenching, the steel will be through hardened up to ø60 mm bar diameter. The microstructure of larger dimensions is not fully martensite. The steel is applicable to induction hardening.
42CrMo4 Alloy Steel, BS EN 10250 Engineering SteelBS EN 42CrMo4 Alloy Steel is a common Chromium-Molybdenum steel. Otai steel supplies prime 42CrMo4 alloy steel which is widely used as engineering steel.
Apr 17, 2018 · The elongation property of 42CrMo4 steel varies with the heat treatment process and thickness but it is indicated typically 11%. 42CrMo4 can be welded by all fusion and resistance methods. But it is not weld able with oxyacetylene welding methods.
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Martempering/Marquenching - Hardening and tempering Holding in the quenching medium until the temperature throughout the steel is substantially uniform; Cooling at a moderate rate to prevent large differences between the outside and the centre of the section; and. Tempering in conventional fashion. Martempering/Marquenching. Marquenching/Martempering is a form of heat treatment applied as an interrupted quench of steels typically in a molten salt bath at a
heat transfer into the tool. These internal stresses can be relieved thermally after the deformation process. To obtain an overview how these processes influence the residual stresses of the first kind after quenching of thermomechanically rolled bar-shaped specimens of heat treatable steel 42CrMo4 (SAE 4140) residual
Parameters on the Microstructure, Hardness, and Strain Particularly, the structural steel grade 42CrMo4 (AISI 4140) o ers the most versatile applications and is one of the most universal grades dedicated to heat treatment and plastic deformation [1,2,68]. However, to facilitate its deformability in cold metal forming processes, this steel requires a special heat treatmentannealing.
The effect of heat treatment on mechanical properties of properties of heat treatment materials. Originality/value:A relationship between the mechanical properties and the microstructure of materials can be developed. The heat treatment is an effective method for this process. Keywords:42CrMo4 steel, Quenching and tempering, Martensitic structure, Mechanical properties
This steel grade is commonly supplied in a ready heat treated condition. If further heat treatment is required annealed 42CrMo4 should be heated slowly and uniformly to 860°-890°C and after adequate soaking at this temperature quench in oil. Temper as soon as the steel reaches room temperature.