IS 2062 E350 BR Carbon Steel Sheets and Plates
IS 2062 E350 BR Carbon Steel Sheets and Plates are engineered for structural applications where higher strength-to-weight ratio is required without moving to specialized alloy steels. Compared to IS 2062 E250 BR, the grade offers improved load-bearing performance, making it suitable for projects that demand greater structural efficiency and optimized steel consumption.
Manufactured in accordance with IS 2062, E350 BR delivers a minimum yield strength of 350 MPa, making it suitable for structures subjected to higher operational loads and demanding service conditions. The additional strength allows designers to reduce section sizes and plate thicknesses while maintaining the required structural performance, helping improve overall project economics.
As a result, E350 BR plates are extensively used in heavy fabrication, material handling equipment, industrial buildings, transportation structures, mining projects, and engineering applications where IS 2062 E250 BR may not provide sufficient strength. Its combination of strength, weldability, and fabrication versatility has made it one of the most widely adopted high-strength structural steel grades in the Indian market.
Mechanical Properties
| Property | Value | Unit |
|---|---|---|
| Yield Strength (min.) | 350 | MPa |
| Tensile Strength | 490 – 630 | MPa |
| Elongation (min.) | 22 | % |
| Hardness | ~140 – 210 | HB |
| Density | 7.85 | g/cm³ |
| Modulus of Elasticity | 200 | GPa |
Chemical Composition
| Element | Max. Content (%) |
|---|---|
| Carbon (C) | 0.22 |
| Manganese (Mn) | 1.60 |
| Sulfur (S) | 0.045 |
| Phosphorus (P) | 0.045 |
| Silicon (Si) | 0.40 |
The controlled composition supports higher strength while maintaining weldability and fabrication performance.
Equivalent Grades
IS 2062 E350 BR is commonly compared with:
- S355JR
- ASTM A572 Grade 50
- JIS SM490A
Equivalent selection should always be validated against project-specific requirements.
Applications
IS 2062 E350 BR sheets and plates are used in heavy-duty structural and engineering applications:
- Industrial Structures & Buildings — Fabrication of industrial sheds, process structures, heavy platforms, and high-load support systems where improved strength is required.
- Material Handling Equipment — Manufacturing of conveyor structures, transfer towers, stackers, reclaimers, and bulk material handling systems.
- Construction & Infrastructure Projects — Bridges, elevated structures, flyovers, and infrastructure components subjected to higher structural loads.
- Heavy Engineering Equipment — Machine bases, equipment frames, fabrication assemblies, and industrial machinery structures.
- Mining & Cement Plants — Structural components exposed to demanding operational conditions and continuous loading environments.
- Transportation & Trailer Manufacturing — Trailer chassis, transport structures, and load-bearing vehicle components where weight optimization is beneficial.
- Power & Process Industries — Structural supports, equipment platforms, and fabricated assemblies used in industrial facilities.
Weldability & Processing
- Weldability:
Despite its higher strength, E350 BR maintains excellent fabrication characteristics.
- Suitable for SMAW, SAW, MIG, and TIG welding.
- Controlled procedures ensure high-quality weld joints.
- Preheating may be considered for thicker sections depending on fabrication requirements.
Forming & Machining:
E350 BR can be cut, machined, drilled, and formed using conventional fabrication equipment.
- Supports CNC and automated fabrication.
- Suitable for heavy fabrication projects.
- Provides good dimensional stability after processing.
E350 BR vs E250 BR
| Property | E250 BR | E350 BR |
|---|---|---|
| Yield Strength | 250 MPa | 350 MPa |
| Tensile Strength | 410–540 MPa | 490–630 MPa |
| Structural Efficiency | Standard | Higher |
| Weight Optimization | Limited | Improved |
| Typical Use | General Fabrication | Heavy Engineering |
Quality Assurance
- Mechanical Testing — Each plate is tested for tensile strength, yield strength, and elongation according to IS 2062 requirements. These tests ensure reliable performance in structural and engineering applications.
Testing verifies that the material meets specified strength levels and fabrication expectations. - Dimensional Accuracy —Plates are inspected for thickness variation, flatness, width, and length tolerances. Dimensional consistency is essential for fabrication precision and structural alignment.
Accurate dimensions help improve fabrication productivity and reduce rework during assembly.
- Weldability Tests —
Material weldability is assessed to ensure strong, durable weld joints in fabrication projects. Proper weldability is critical for maintaining structural integrity under service loads. Testing helps validate fabrication suitability for demanding industrial applications.
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