EN 10083-1 42CrMo4 Introduce
EN 10083-1 42CrMo4 steel is a high quality, low alloy steel grade commonly used in various industries due to its impressive thermal properties. It has a thermal diffusivity of 2.75 x 10-6 m 2 /s, a thermal conductivity of 16.31 W/(m•K), and a high melting point of 1415°C. These properties make it ideal for high temperature applications, such as oil and gas pipelines, high temperature furnaces, boilers and chemical processing facilities. It is also used extensively in the automotive industry for components that require fast cooling, such as jet engines and performance vehicle exhaust systems.
Smelting temperature:1412°C - 1729°C
Application:Quenched and tempered steel - Part 1: General delivery technical conditions
EN 10083-1 42CrMo4 Material Chemical Composition
The chemical composition of the EN 10083-1 42CrMo4 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Molybdenum (Mo) | 0.1500 | 0.3000 |
| Chromium (Cr) | 0.9000 | 1.2000 |
| PhOsphorus (P) | - | 0.0350 |
| Sulfur (S) | - | 0.0350 |
| Manganese (Mn) | 0.6000 | 0.9000 |
| Silicon (Si) | - | 0.4000 |
| Carbon (C) | 0.3800 | 0.4500 |
| PhOsphorus (P) | - | 0.0250 |
EN 10083-1 42CrMo4 Material Mechanical Properties
Fatigue is a measure of the material's ability to withstand cyclic loading without failure. EN 10083-1 42CrMo4 steel has an excellent fatigue strength of 125-175 MPa at 1000 cycles which makes it suitable for use in components that are exposed to high frequency and vibration such as gears or shafts. The high fatigue strength can also provide longer life expectancy for these components.
The mechanical properties of the EN 10083-1 42CrMo4 steel are as follows:
| YieldRp0.2 | ≤ 743 (MPa) |
| TeileRm | ≤ 723 (MPa) |
| ImpactKV/Ku | 34(J) |
| ElongationA | 21% |
| Reduction in cross section on fractureZ | 11% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 123 |
EN 10083-1 42CrMo4 Material Thermal Properties
The thermal performance parameters of the EN 10083-1 42CrMo4 steel are as follows:
| Temperature (°C) | 14 | 768 | 562 |
| Modulus of elasticity (GPa) | - | 152 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 34.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 431 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 424 |
| Poisson’s coefficient, ν | - | - | 313 |
EN 10083-1 42CrMo4 Material Machining Technology
The machining of EN 10083-1 42CrMo4 steel requires a great deal of skill and precision. However, with the proper tools, lubricants, and techniques, it is possible to achieve an excellent finished product. When selecting the appropriate tool for the job, ensuring the workpiece and tool remain at the same temperature, and taking the time to properly polish or finish the part, the desired results can be reliably achieved.