EN 10083-1 34Cr4 Introduce
The EN 10083-1 34Cr4 standard is a particular guide for steel, covering items such as chemical composition, mechanical properties, heat treatment, product designation, and mechanical tests. Chemical composition offers a basic overview of what alloys of steel are acceptable for use in EN 10083-1 34Cr4 steels; mechanical properties at different temperatures and product designations address the strength requirements of the metal.
Smelting temperature:1426°C - 1193°C
Application:Quenched and tempered steel - Part 1: General delivery technical conditions
EN 10083-1 34Cr4 Material Chemical Composition
The chemical composition of the EN 10083-1 34Cr4 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Silicon (Si) | - | 0.4000 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0250 |
| Manganese (Mn) | 0.6000 | 0.9000 |
| Chromium (Cr) | 0.9000 | 1.2000 |
| Carbon (C) | 0.3000 | 0.3700 |
| Silicon (Si) | - | 0.3000 |
| Sulfur (S) | - | 0.0250 |
| Copper (Cu) | - | 0.2500 |
| Carbon (C) | 0.3000 | 0.3700 |
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0350 |
EN 10083-1 34Cr4 Material Mechanical Properties
EN 10083-1 34Cr4 steel is a family of carbon and alloy steels renowned for their excellent mechanical properties. Since it has a number of advantages, it is widely used in many modern industries including the oil and gas industry, automotive and construction. Its mechanical properties include strength, ductility, toughness, fatigue, corrosion and creep resistance.
The mechanical properties of the EN 10083-1 34Cr4 steel are as follows:
| YieldRp0.2 | ≤ 343 (MPa) |
| TeileRm | ≤ 441 (MPa) |
| ImpactKV/Ku | 33(J) |
| ElongationA | 12% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 433 |
EN 10083-1 34Cr4 Material Thermal Properties
The thermal performance parameters of the EN 10083-1 34Cr4 steel are as follows:
| Temperature (°C) | 33 | 893 | 894 |
| Modulus of elasticity (GPa) | - | 469 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 31 |
| Thermal conductivity (W/m·°C) | - | 22.3 | 31.2 |
| Specific thermal capacity (J/kg·°C) | - | 311 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 112 |
| Poisson’s coefficient, ν | - | - | 331 |
EN 10083-1 34Cr4 Material Machining Technology
Due to the high level of strength and hardness of EN 10083-1 34Cr4 steel, it is important to use a lubricant during the machining process. Oil-based lubricants are recommended as they are better able to contain heat generated by the tools. Additionally, using slower rates of feed and lower cutting speeds will reduce the friction between the work piece and the tool, resulting in an improved finish.