EN 10028-4 X8Ni9 Introduce
The EN 10028-4 standard is an important steel standard introduced to the European market to provide standardised steel across different European countries. This standard covers steel flat products, long products and coated products in order to ensure the quality and properties of the steel produced. The various tests and inspections laid out within the standard are needed to ensure that the steel produced meets the required specifications according to the standard.
Smelting temperature:1617°C - 1278°C
Application:Flat products made of steels for pressure purposes - Part 4: Nickel alloy steels with specified low temperature properties
EN 10028-4 X8Ni9 Material Chemical Composition
The chemical composition of the EN 10028-4 X8Ni9 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Vanadium (V) | - | 0.0500 |
| Silicon (Si) | - | 0.3500 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0200 |
| Nickel (Ni) | 8.5000 | 10.0000 |
| Molybdenum (Mo) | - | 0.1000 |
| Manganese (Mn) | 0.3000 | 0.8000 |
| Copper (Cu) | - | 0.3000 |
| (Cr+Cu+Mo) | - | 0.5000 |
| Chromium (Cr) | - | 0.3000 |
| Carbon (C) | - | 0.1000 |
EN 10028-4 X8Ni9 Material Mechanical Properties
EN 10028-4 X8Ni9 steel is a type of steel used in engineering and construction applications. It has a number of advantages over other types of steel, such as higher strength and greater corrosion resistance. In this article, the focus will be on its mechanical properties, which include its yield strength, tensile strength, hardness, ductility, and toughness. These properties are important for determining the suitability of a material for a particular application.
The mechanical properties of the EN 10028-4 X8Ni9 steel are as follows:
| YieldRp0.2 | ≤ 943 (MPa) |
| TeileRm | ≤ 182 (MPa) |
| ImpactKV/Ku | 22(J) |
| ElongationA | 23% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 444 |
EN 10028-4 X8Ni9 Material Thermal Properties
The thermal performance parameters of the EN 10028-4 X8Ni9 steel are as follows:
| Temperature (°C) | 21 | 517 | 941 |
| Modulus of elasticity (GPa) | - | 223 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 41.3 | 33.2 |
| Specific thermal capacity (J/kg·°C) | - | 114 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 214 |
| Poisson’s coefficient, ν | - | - | 242 |
EN 10028-4 X8Ni9 Material Machining Technology
EN 10028-4 X8Ni9 steel is a commonly used material for machining applications in the oil and gasindustry, as well as for products in the aerospace, automotive, and other heavy industries. It hashigh strength, corrosion resistance and fatigue strength, making it one of the most popularalloys for precision machining applications.