EN 10088-1 1.4550 Introduce
The European Norm EN 10088-1 is the first in a series of standards for stainless steel used for general purposes in the construction industry. It provides requirements for materials manufactured to a range of grades and products, such as flat products, long products, valve and fitting products, and bars and rods. EN 10088-1 specifies a number of criteria including chemical composition, mechanical properties, and surface condition suitable for the intended application.
Smelting temperature:1475°C - 1589°C
Application:Stainless steels. List of stainless steels
EN 10088-1 1.4550 Material Chemical Composition
The chemical composition of the EN 10088-1 1.4550 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | - | 0.0800 |
| Manganese (Mn) | - | 2.0000 |
| PhOsphorus (P) | - | 0.0450 |
| Sulfur (S) | - | 0.0150 |
| Silicon (Si) | - | 1.0000 |
| Nickel (Ni) | 9.0000 | 12.0000 |
| Chromium (Cr) | 17.0000 | 19.0000 |
| Niobium (Nb) | - | 1.0000 |
| Nickel (Ni) | 9.0000 | 12.0000 |
| Niobium (Nb) | - | 1.0000 |
| PhOsphorus (P) | - | 0.0400 |
| Nickel (Ni) | 9.0000 | 12.0000 |
| Niobium (Nb) | - | 1.0000 |
| Niobium (Nb) | - | 1.0000 |
| Sulfur (S) | - | 0.0150 |
| Nickel (Ni) | 9.0000 | 12.0000 |
EN 10088-1 1.4550 Material Mechanical Properties
EN 10088-1 1.4550 steel has a good strength to weight ratio, meaning that it is both strong and lightweight. This can be very useful in certain construction and engineering applications, as it allows for lighter structures that are still able to withstand heavy loads. Further, the strength of the steel can be tailored depending on the specific grade, making it possible to choose the right option for each job.
The mechanical properties of the EN 10088-1 1.4550 steel are as follows:
| YieldRp0.2 | ≤ 329 (MPa) |
| TeileRm | ≤ 454 (MPa) |
| ImpactKV/Ku | 21(J) |
| ElongationA | 41% |
| Reduction in cross section on fractureZ | 13% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 443 |
EN 10088-1 1.4550 Material Thermal Properties
The thermal performance parameters of the EN 10088-1 1.4550 steel are as follows:
| Temperature (°C) | 24 | 414 | 342 |
| Modulus of elasticity (GPa) | - | 939 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 13 |
| Thermal conductivity (W/m·°C) | - | 44.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 214 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 222 |
| Poisson’s coefficient, ν | - | - | 332 |
EN 10088-1 1.4550 Material Machining Technology
The machining process for EN 10088-1 1.4550 steel follows the same basic steps as other types of steel, but it can be more difficult due to the material's hardness and higher resistance to heat. First, the material must be cut, which may be done either by hand-held tools or by a machine. Hand tools such as hacksaws, files, and chisels can be used to achieve the desired shape or size. If using a machine, the appropriate feed rate and cutting tool must be determined in order to obtain the desired results.