EN 10083-3 39NiCrMo3 Introduce
EN 10083-3 39NiCrMo3 is a high-performance alloy steel with a wide range of applications in the automotive, construction and agricultural industries. The machining of this steel requires careful consideration of its heat treatment, cutting tools and speeds, workpiece setup and coolant selection. Following the guidelines outlined above, it is possible to achieve desired performance characteristics when machining EN 10083-3 39NiCrMo3 steel.
Smelting temperature:1787°C - 1961°C
Application:Steels for quenching and tempering - part 3: technical delivery conditions for alloy steels
EN 10083-3 39NiCrMo3 Material Chemical Composition
The chemical composition of the EN 10083-3 39NiCrMo3 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0250 |
| Nickel (Ni) | 0.7000 | 1.0000 |
| Molybdenum (Mo) | 0.1500 | 0.2500 |
| Manganese (Mn) | 0.5000 | 0.8000 |
| Chromium (Cr) | 0.6000 | 1.0000 |
| Carbon (C) | 0.3500 | 0.4300 |
EN 10083-3 39NiCrMo3 Material Mechanical Properties
The thermal treatment of EN 10083-3 39NiCrMo3 steel is an important process that influences the properties of the alloy. This involves heating the alloy to a certain temperature range and then cooling at a specific rate to obtain the desired properties. Heat treatment can improve the wear resistance and the toughness of the alloy.
The mechanical properties of the EN 10083-3 39NiCrMo3 steel are as follows:
| YieldRp0.2 | ≤ 393 (MPa) |
| TeileRm | ≤ 425 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 41% |
| Reduction in cross section on fractureZ | 44% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 344 |
EN 10083-3 39NiCrMo3 Material Thermal Properties
The thermal performance parameters of the EN 10083-3 39NiCrMo3 steel are as follows:
| Temperature (°C) | 21 | 166 | 572 |
| Modulus of elasticity (GPa) | - | 921 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 32 |
| Thermal conductivity (W/m·°C) | - | 33.3 | 23.2 |
| Specific thermal capacity (J/kg·°C) | - | 432 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.41 | - | - |
| Deity (kg/dm³) | - | - | 212 |
| Poisson’s coefficient, ν | - | - | 242 |
EN 10083-3 39NiCrMo3 Material Machining Technology
The selection of a coolant is also important when machining EN 10083-3 39NiCrMo3 steel. A good quality coolant should be selected to protect the steel from oxidation, heat buildup, and promote chip evacuation. An effective cooling system should also be used to ensure the coolant is maintained at a stable temperature for optimal machining performance.