EN 10028-7 1.4958 Introduce
EN 10028-7 1.4958 is made in a range of grades and specifications, dependent on the application and manufacture that it will be used for. The three grades are P235, P355 and P460. The 'P' stands for pressure and specifies the minimum yield strength of the steel, for example P235 is for steel of minimum yield strength 235MPa, P355 for 355MPa and so on. Other properties such as chemical composition and mechanical properties are defined in the standard.
Smelting temperature:1373°C - 1989°C
Application:Flat products made of steels for pressure purposes - part 7: stainless steels
EN 10028-7 1.4958 Material Chemical Composition
The chemical composition of the EN 10028-7 1.4958 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | 0.0300 | 0.0800 |
| Manganese (Mn) | - | 1.5000 |
| PhOsphorus (P) | - | 0.0150 |
| Sulfur (S) | - | 0.0100 |
| Silicon (Si) | - | 0.7000 |
| Nickel (Ni) | 30.0000 | 32.5000 |
| Chromium (Cr) | 19.0000 | 22.0000 |
| Copper (Cu) | - | 0.5000 |
| Titanium (Ti) | 0.2000 | 0.5000 |
| Aluminum (Al) | 0.2000 | 0.5000 |
| Nitrogen (N) | - | 0.0300 |
| Niobium (Nb) | - | 0.1000 |
| Cobalt (Co) | - | 0.5000 |
| (Ni+Co) | 30.0000 | 32.5000 |
| (Al + Ti) | - | 0.7000 |
EN 10028-7 1.4958 Material Mechanical Properties
EN 10028-7 1.4958 is a type of steel that exhibits excellent mechanical properties such as high yield strength, high tensile strength, good weldability and high corrosion resistance. The material also has good impact resistance and wear resistance, making it suitable for many engineering and construction applications. The chemical composition of this steel grade is specified in EN 10028-7 1.4958 and the mechanical properties can be tailored through heat treatments and other methods.
The mechanical properties of the EN 10028-7 1.4958 steel are as follows:
| YieldRp0.2 | ≤ 566 (MPa) |
| TeileRm | ≤ 112 (MPa) |
| ImpactKV/Ku | 24(J) |
| ElongationA | 13% |
| Reduction in cross section on fractureZ | 23% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 414 |
EN 10028-7 1.4958 Material Thermal Properties
The thermal performance parameters of the EN 10028-7 1.4958 steel are as follows:
| Temperature (°C) | 42 | 898 | 637 |
| Modulus of elasticity (GPa) | - | 778 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 11 |
| Thermal conductivity (W/m·°C) | - | 14.3 | 41.2 |
| Specific thermal capacity (J/kg·°C) | - | 224 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.12 | - | - |
| Deity (kg/dm³) | - | - | 334 |
| Poisson’s coefficient, ν | - | - | 131 |
EN 10028-7 1.4958 Material Machining Technology
Steel is an essential material used in many industries and applications, and it is important to understand how to machine it correctly. EN 10028-7 1.4958 steel is a special grade of steel used in pressure vessels and boilers, and machining it correctly is vital to ensure a successful result.