S275JR is a European standard low-alloy high-strength structural steel pipe, conforming to the standard EN10025-3:2003. S275JR structural pipe possesses high strength, good toughness, and weldability. Due to its excellent comprehensive performance, it is widely used in the manufacture of various engineering machinery structural components.
Chemical composition of S275JR steel:
C: ≤0.21
Si: ≤0.50
Mn: ≤1.50
S: ≤0.035
P: ≤0.035
Physical Properties of S275JR Steel
1. Density: 7850 kg/m³
2. Thermal Conductivity: Approx. 50 W/(m:K)
3. Elastic Modulus: Approx. 210 GPa
4. Tensile Strength: 410-560 MPa
5. Ductility: ≥20%
Comparison with other materials
The main difference between S275JR and similar materials (such as S235JR and S355JR) lies in their mechanical properties:
- S235JR has a lower yield strength (235MPa) and a slightly lower cost.
- S355JR has higher strength (355MPa), but its weldability is slightly inferior.
Application Scenarios
S275JR steel pipes are widely used in the following fields:
- Building structures: such as factory frames, stair treads, etc.
- Machinery manufacturing: such as equipment bases, conveyor supports, etc.
- Transportation: such as truck bodies, rail vehicle components, etc.
S275JR Hollow Section Factory
