EN 10083-3 39MnCrB6-2 Introduce
The European standard EN 10083-3, Steel – Part 3: Technical Delivery Conditions for Alloy Steels, was adopted in 2018 to set out a range of requirements for the use of alloy steels for engineering purposes in Europe. With the increasing global demand for steel, particularly for specialty steels found in the automotive industry, EN 10083-3 was created to ensure consistent quality standards across different manufacturers.
Smelting temperature:1424°C - 1658°C
Application:Steels for quenching and tempering - part 3: technical delivery conditions for alloy steels
EN 10083-3 39MnCrB6-2 Material Chemical Composition
The chemical composition of the EN 10083-3 39MnCrB6-2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0250 |
| Manganese (Mn) | 1.4000 | 1.7000 |
| Chromium (Cr) | 0.3000 | 0.6000 |
| Carbon (C) | 0.3600 | 0.4200 |
| Boron (B) | 0.0008 | 0.0050 |
EN 10083-3 39MnCrB6-2 Material Mechanical Properties
Yield strength is the stress at which a material permanently deform, or yield. The yield strength of EN 10083-3 39MnCrB6-2 steel depends on the grade, but is typically between 345 N/mm2 and 700 N/mm2.
The mechanical properties of the EN 10083-3 39MnCrB6-2 steel are as follows:
| YieldRp0.2 | 199 (≥)(MPa) |
| TeileRm | 879 (≥)(MPa) |
| ImpactKV/Ku | 11(J) |
| ElongationA | 42% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 232 |
EN 10083-3 39MnCrB6-2 Material Thermal Properties
The thermal performance parameters of the EN 10083-3 39MnCrB6-2 steel are as follows:
| Temperature (°C) | 43 | 796 | 294 |
| Modulus of elasticity (GPa) | - | 231 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 24 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 43.2 |
| Specific thermal capacity (J/kg·°C) | - | 241 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.14 | - | - |
| Deity (kg/dm³) | - | - | 112 |
| Poisson’s coefficient, ν | - | - | 312 |
EN 10083-3 39MnCrB6-2 Material Machining Technology
Cutting speed and feed rate are two of the most important machining parameters for EN 10083-3 39MnCrB6-2 steel. The cutting speed should be selected in relation to the cutting tool's hardness and type, the feed rate should be matched to the cutting speed. The optimum cutting parameters will vary depending on the cutting tool selected and the part geometry. Generally, higher cutting speeds are associated with reduced surface finish, so care should be taken to ensure that the surfaces produced meet specifications.