EN 10025-2 S275J2 Introduce
EN 10025-2 S275J2 offers high strength and good weldability due to its composition and chemical composition. It is a type of low alloy steel and has a yield strength of up to 345 MPa (although the steel can be further depleted if necessary). It can be used in the construction of structures such as buildings, bridges and cranes. Furthermore, due to its good toughness and ductility, it can be formed into shapes without cracking or becoming brittle.
Smelting temperature:1484°C - 1262°C
Application:Hot rolled structural steel products - Part 2: Technical delivery conditions for non-alloy structural steels.
EN 10025-2 S275J2 Material Chemical Composition
The chemical composition of the EN 10025-2 S275J2 steel are as follows:
| Element | Min | Max |
|---|---|---|
| Sulfur (S) | - | 0.0350 |
| PhOsphorus (P) | - | 0.0350 |
| Manganese (Mn) | - | 1.6000 |
| Copper (Cu) | - | 0.6000 |
| Carbon (C) | - | 0.2100 |
EN 10025-2 S275J2 Material Mechanical Properties
The mechanical properties of EN 10025-2 S275J2 steel can be improved by tempering. Tempering is a process whereby an engineered metal is heated and then cooled to change its properties. Depending on the grade, the tempering process can result in improved impact strength and ductility compared to the original state.
The mechanical properties of the EN 10025-2 S275J2 steel are as follows:
| YieldRp0.2 | ≤ 535 (MPa) |
| TeileRm | ≤ 844 (MPa) |
| ImpactKV/Ku | 31(J) |
| ElongationA | 24% |
| Reduction in cross section on fractureZ | 33% |
| As-Heat-Treated Condition | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness (HBW) | 424 |
EN 10025-2 S275J2 Material Thermal Properties
The thermal performance parameters of the EN 10025-2 S275J2 steel are as follows:
| Temperature (°C) | 44 | 754 | 218 |
| Modulus of elasticity (GPa) | - | 123 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 43 |
| Thermal conductivity (W/m·°C) | - | 21.3 | 24.2 |
| Specific thermal capacity (J/kg·°C) | - | 432 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.21 | - | - |
| Deity (kg/dm³) | - | - | 232 |
| Poisson’s coefficient, ν | - | - | 323 |
EN 10025-2 S275J2 Material Machining Technology
EN 10025-2 S275J2 steel is incredibly easy to machine and can be used with a variety of machining techniques. It can be cut with a CNC lathe, a horizontal machining center or a drill press. It's also possible to create threads and other features using a tap. The primary challenge when machining EN 10025-2 S275J2 steel is the high speed and heat generated during the cutting process. To prevent it from overheating and becoming damaged, a coolant is often used to reduce the temperature and heat buildup. Additionally, machine shops must ensure that the material is securely clamped to the workbench, as vibrations caused by high rotation speeds can cause the material to become damaged.