The S275JR Channel Bar is a C-shaped structural steel section made from ordinary carbon structural steel according to the EN10025 European standard.
This grade is widely used for structural frameworks, engineering machinery, and construction projects with standard or moderate requirements. Its yield strength and tensile properties are similar to the Chinese Q275 channel steel, and it is generally delivered in a hot-rolled heat-treated condition.
Chemical composition of S275JR Channel Bar
| Element | Maximum Content (%) |
|---|---|
| Carbon (C) | 0.21 |
| Manganese (Mn) | 1.50 |
| Copper (Cu) | 0.55 |
| Phosphorus (P) | 0.035 |
| Sulfur (S) | 0.035 |
Mechanical properties of S275JR Channel Bar
| Property | Value |
|---|---|
| Yield Strength | ≥ 275 MPa |
| Tensile Strength | 430–580 MPa |
| Elongation | ≥ 23% |
S275JR Channel Bar execution standard
The S275JR Channel Bar is produced according to EN10025, the European standard for low-alloy, hot-rolled structural steel. This standard defines delivery conditions, technical specifications, and quality requirements to ensure reliable performance in structural applications.
S275JR Channel Bar delivery status
S275JR Channel Bars are typically supplied in hot-rolled heat-treated condition. If inspection or Z-direction mechanical performance is required, both the supplier and buyer can negotiate and include such requirements in the purchase contract.
What is S275JR grade steel?
S275JR grade steel is a readily weldable low carbon manganese steel with good impact resistance. This material is commonly supplied in the untreated or normalised condition. Machinability of this material is similar to that of mild steel.
What is S275 steel channel?
S275 is an unalloyed low carbon mild steel grade supplied as hot rolled. As a low carbon steel specification, S275 provides low strength with good machinability and is suitable for welding. Common uses of Mild Steel Channel Black S275 include: Automobiles.
Is S275JR equivalent to ASTM A36?
1 (American Welding Society) permits S275JR as an equivalent to A36 for welding purposes, and they are frequently interchanged in international projects. However, they are not identical: Standards: A36 is governed by ASTM (American), while S275JR follows EN (European), leading to differences in testing requirements.
What is the difference between S235JR and S275JR?
S235JR is used in less demanding applications, such as general construction, lightweight structures, and components where lower strength is sufficient (e.g., beams, columns, and frames). S275JR is preferred for applications requiring higher strength, such as heavier structural components, bridges, or machinery parts.