EN 10028-4 X7Ni9 Introduce
EN 10028-4 is a European standard which can be used to improve the quality and value of different projects, as it guarantees flexibility and great mechanical and physical properties. This standard helps to reduce production costs, as it requires fewer costly operations and helps to increase productivity in several applications.
Smelting temperature:1678°C - 1399°C
Application:Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties
EN 10028-4 X7Ni9 Material Mechanical Properties
As a result of its excellent mechanical properties, EN 10028-4 X7Ni9 steel is suitable for a wide range of applications. It is commonly used in the construction of bridges, buildings, and heavy machinery, as well as in automotive components and other industrial machinery. Furthermore, its superior corrosion resistance makes it suitable for use in corrosive environments, such as offshore drilling platforms.
The mechanical properties of the EN 10028-4 X7Ni9 steel are as follows:
| YieldRp0.2 | ≤ 117 (MPa) |
| TeileRm | ≤ 834 (MPa) |
| ImpactKV/Ku | 32(J) |
| ElongationA | 43% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 431 |
EN 10028-4 X7Ni9 Material Thermal Properties
The thermal performance parameters of the EN 10028-4 X7Ni9 steel are as follows:
| Temperature (°C) | 13 | 683 | 117 |
| Modulus of elasticity (GPa) | - | 422 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 33.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 443 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.24 | - | - |
| Deity (kg/dm³) | - | - | 211 |
| Poisson’s coefficient, ν | - | - | 132 |
EN 10028-4 X7Ni9 Material Machining Technology
Despite the many benefits of machining EN 10028-4 X7Ni9 steel, it also presents some challenges.
First, it is a difficult material to machine due to its high strength and stiffness. While these properties are beneficial for many applications, they can make machining difficult, as the cutting tool must be sharp enough to cut through the material.
Second, it requires a high level of precision when machining components due to its tight tolerances. This means that machinists must have experience with this material, as minor errors can drastically reduce the quality of the finished product.
Third, it can be expensive. While this isn't necessarily a problem, it can be difficult to balance cost and quality when machining EN 10028-4 X7Ni9 steel.