EN 10028-7 1.4958 + RA Introduce
The EN 10028-7 is a standard for flat steels designed for pressure vessels and other high-temperature applications. It is an EN-specific European standard, created in collaboration with the European Union. The standard defines technical specifications for a wide range of products, including plates, bars, forgings, and sheets. It also provides requirements for material design, testing, inspection, and certification for all applicable uses. As with many other standards within EN, the EN 10028-7 1.4958 + RA standard is divided into several parts, each part covering a different area of use.
Smelting temperature:1994°C - 1992°C
Application:Flat products made of steels for pressure purposes - part 7: stainless steels
EN 10028-7 1.4958 + RA Material Chemical Composition
The chemical composition of the EN 10028-7 1.4958 + RA steel are as follows:
| Element | Min | Max |
|---|---|---|
| Titanium (Ti) | 0.2000 | 0.5000 |
| Silicon (Si) | - | 0.7000 |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0150 |
| Nickel (Ni) | 30.0000 | 32.5000 |
| Niobium (Nb) | - | 0.1000 |
| Nitrogen (N) | - | 0.0300 |
| Manganese (Mn) | - | 1.5000 |
| Copper (Cu) | - | 0.5000 |
| Chromium (Cr) | 19.0000 | 22.0000 |
| Cobalt (Co) | - | 0.5000 |
| Carbon (C) | 0.0300 | 0.0800 |
| Aluminum (Al) | 0.2000 | 0.5000 |
| (Ni+Co) | 30.0000 | 32.5000 |
| (Al + Ti) | - | 0.7000 |
EN 10028-7 1.4958 + RA Material Mechanical Properties
EN 10028-7 1.4958 + RA is a type of steel commonly used in the engineering and construction industry due to its excellent mechanical properties. It is a low-carbon, chromium-molybdenum austenitic steel of the EN 10028-7 1.4958 + RA grade that exhibits high toughness, good weldability and high corrosion resistance. In this article, the mechanical properties of this steel grade will be discussed, covering aspects such as yield strength, tensile strength, and impact resistance.
The mechanical properties of the EN 10028-7 1.4958 + RA steel are as follows:
| YieldRp0.2 | ≤ 115 (MPa) |
| TeileRm | ≤ 863 (MPa) |
| ImpactKV/Ku | 44(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 34% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 242 |
EN 10028-7 1.4958 + RA Material Thermal Properties
The thermal performance parameters of the EN 10028-7 1.4958 + RA steel are as follows:
| Temperature (°C) | 23 | 488 | 685 |
| Modulus of elasticity (GPa) | - | 334 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 34.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 422 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 224 |
| Poisson’s coefficient, ν | - | - | 114 |
EN 10028-7 1.4958 + RA 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 + RA steel is a special grade of steel used in pressure vessels and boilers, and machining it correctly is vital to ensure a successful result.