EN 10083-1 25CrMo4 Introduce
EN 10083-1 25CrMo4, a standard developed in Europe, specifies requirements for the manufacture and performance of steel for use in industrial applications. Embodying the best of traditional European practices, this document is referred to as the "EN" standard, and many of its provisions are incorporated into the family of EN standards.
Smelting temperature:1833°C - 1272°C
Application:Quenched and tempered steel - Part 1: General delivery technical conditions
EN 10083-1 25CrMo4 Material Chemical Composition
The chemical composition of the EN 10083-1 25CrMo4 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) | 0.2200 | 0.2900 |
| Aluminum (Al) | - | 0.0400 |
| Sulfur (S) | - | 0.0300 |
| Silicon (Si) | 0.1000 | 0.3500 |
| Sulfur (S) | - | 0.0150 |
| PhOsphorus (P) | - | 0.0200 |
| Nickel (Ni) | - | 0.3000 |
| Molybdenum (Mo) | 0.1500 | 0.2500 |
| Manganese (Mn) | 0.5000 | 0.8000 |
| PhOsphorus (P) | - | 0.0250 |
EN 10083-1 25CrMo4 Material Mechanical Properties
Low carbon content gives EN 10083-1 25CrMo4 steels a very good balance between strength and ductility, whereas the added molybdenum and vanadium give the steel good fatigue resistance and thermal stability.
The mechanical properties of the EN 10083-1 25CrMo4 steel are as follows:
| YieldRp0.2 | ≤ 489 (MPa) |
| TeileRm | ≤ 457 (MPa) |
| ImpactKV/Ku | 43(J) |
| ElongationA | 32% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 221 |
EN 10083-1 25CrMo4 Material Thermal Properties
The thermal performance parameters of the EN 10083-1 25CrMo4 steel are as follows:
| Temperature (°C) | 34 | 932 | 881 |
| Modulus of elasticity (GPa) | - | 112 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 14 |
| Thermal conductivity (W/m·°C) | - | 43.3 | 11.2 |
| Specific thermal capacity (J/kg·°C) | - | 242 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.42 | - | - |
| Deity (kg/dm³) | - | - | 221 |
| Poisson’s coefficient, ν | - | - | 132 |
EN 10083-1 25CrMo4 Material Machining Technology
The machining of EN 10083-1 25CrMo4 steel is a process by which metal components are cut, formed, and shaped using a series of tools. This type of steel is most commonly used in the automobile and aerospace industries due to its strength and durability. In order to achieve its desired machinability, there are several considerations a machinist must take into account. This article will discuss the different machining processes of EN 10083-1 25CrMo4 steel and provide tips for how to achieve the best possible finished product.