DIN EN 10028-5 1.8821 Introduce
DIN EN 10028-5 is an European standard for hot-rolled flat products made of steels for pressure purposes. It applies to steels for pressure purposes with specified elevated temperature properties. These steel grades are also classified according to their chemical composition and mechanical properties. The mechanical properties of these steels are guaranteed by a range of tests specified in the standard. This type of steel is used in pressure vessels, boilers, steam lines, and steam turbines. The use of DIN EN 10028-5 1.8821 and its guidelines can help to increase safety and performance, while reducing the production costs associated with pressure equipment.
Smelting temperature:1686°C - 1423°C
Application:Pressure flat steel products - Part 5: Weldable fine grain steel, thermomechanical rolling
DIN EN 10028-5 1.8821 Material Mechanical Properties
The mechanical properties of the DIN EN 10028-5 1.8821 steel are as follows:
| YieldRp0.2 | ≤ 941 (MPa) |
| TeileRm | ≤ 771 (MPa) |
| ImpactKV/Ku | 33(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) | 232 |
DIN EN 10028-5 1.8821 Material Thermal Properties
The thermal performance parameters of the DIN EN 10028-5 1.8821 steel are as follows:
| Temperature (°C) | 13 | 778 | 515 |
| Modulus of elasticity (GPa) | - | 156 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 11 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 34.2 |
| Specific thermal capacity (J/kg·°C) | - | 244 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.11 | - | - |
| Deity (kg/dm³) | - | - | 443 |
| Poisson’s coefficient, ν | - | - | 342 |
DIN EN 10028-5 1.8821 Material Machining Technology
When machining DIN EN 10028-5 1.8821 steel, several machining strategies should be adopted in order to increase tool life and improve surface finish. For example, slower feed rates, shallow depths of cut, and fewer passes should be used in order to reduce heat build-up, minimize tool wear, and improve surface finish. It is also important to use a sharp, clean tool in order to reduce friction and minimize tool wear.