The S275JR Mild Steel Channel Bar is a C-shaped structural steel section designed for structural and fabrication applications. Manufactured from S275JR grade mild steel, it provides excellent weldability and machinability, while offering good corrosion resistance due to the Red Oxide protective coating.
With poor formability, this channel bar is primarily intended for straight load-bearing applications rather than extensive bending or shaping.
Material Properties
Material: Mild Steel
Grade: S275JR (EN 10025-2)
Shape: Channel (C-section)
Finish: Red Oxide (protective corrosion coating)
Mechanical & Processing Characteristics
Weldability: Excellent – easy to weld without preheating under standard conditions
Machinability: Excellent – easy to cut, drill, and fabricate
Formability: Poor – limited bending capabilities
Corrosion Resistance: Good – Red Oxide coating provides surface protection
Dimensions & Weight
| Parameter | Value |
|---|---|
| Height | 75 mm |
| Width | 150 mm |
| Thickness | 18 mm |
| Leg Thickness | 10 mm |
| Base Thickness | 5.5 mm |
| Weight per Metre | 18 kg |
Products Specifications
| Item | Description |
|---|---|
| Material | Mild Steel |
| Grade | S275JR |
| Shape | Channel |
| Finish | Red Oxide |
| Maximum Cut Length | 6 metres |
| Weldability | Excellent |
| Machinability | Excellent |
| Formability | Poor |
| Corrosion Resistance | Good |
| Height | 75 mm |
| Width | 150 mm |
| Thickness | 18 mm |
| Leg Thickness | 10 mm |
| Base Thickness | 5.5 mm |
| Weight / Metre | 18 kg |
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.