EN 10088-1 1.4669 Introduce
EN 10088-1 1.4669 is applicable to flat products; long products including bars and rods, wire and slabs; oxide-coated products; and corrosion-resistant products such as valves and fittings. It covers stainless steels of the following grades: austenitic, ferritic, martensitic, and duplex (a blend of austenitic and ferritic) as well as precipitation-hardening steels. The standard also designates several additional application requirements for these grades, such as temper rolling or cold processing, or additional heat treatment or surface modifications.
Smelting temperature:1165°C - 1453°C
Application:Stainless steels. List of stainless steels
EN 10088-1 1.4669 Material Chemical Composition
The chemical composition of the EN 10088-1 1.4669 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Carbon (C) | - | 0.0450 |
| Manganese (Mn) | 1.0000 | 3.0000 |
| PhOsphorus (P) | - | 0.0400 |
| Sulfur (S) | - | 0.0300 |
| Silicon (Si) | - | 1.0000 |
| Nickel (Ni) | 1.0000 | 3.0000 |
| Chromium (Cr) | 21.5000 | 24.0000 |
| Molybdenum (Mo) | - | 0.5000 |
| Copper (Cu) | 1.6000 | 3.0000 |
| Nitrogen (N) | 0.1200 | 0.2000 |
EN 10088-1 1.4669 Material Mechanical Properties
EN 10088-1 1.4669 steels are also highly heat resistant. This property is the result of the combination of elements in the alloy, as well as the specific heat treatments used in the fabrication of the steel. This property makes EN 10088-1 1.4669 steels a great choice for applications where the steel must be subjected to high temperatures, such as components of a vehicle's exhaust system.
The mechanical properties of the EN 10088-1 1.4669 steel are as follows:
| YieldRp0.2 | ≤ 541 (MPa) |
| TeileRm | ≤ 993 (MPa) |
| ImpactKV/Ku | 41(J) |
| ElongationA | 31% |
| Reduction in cross section on fractureZ | 24% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 224 |
EN 10088-1 1.4669 Material Thermal Properties
The thermal performance parameters of the EN 10088-1 1.4669 steel are as follows:
| Temperature (°C) | 42 | 951 | 872 |
| Modulus of elasticity (GPa) | - | 678 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 22 |
| Thermal conductivity (W/m·°C) | - | 33.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 232 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 342 |
| Poisson’s coefficient, ν | - | - | 114 |
EN 10088-1 1.4669 Material Machining Technology
Machining EN 10088-1 1.4669 steel can be a difficult and challenging process due to its high strength and heat resistance. Operators must carefully and properly select the feed rate, cutting speed, and cutting tools for their specific project in order to achieve the desired result. Additionally, the operator must be mindful of the potential for tool wear and thermal shock, and take the necessary steps to prevent them. With the proper knowledge and preparation, successful machining of EN 10088-1 1.4669 steel can be achieved.