IS 2062 E350 BR / E350 C (High-Strength Carbon Structural Steel) IS 2062 E350 BR and E350 C are high-strength carbon structural steel grades defined under the Indian Standard IS 2062. With a minimum yield strength of 350 MPa, these grades are ideal for structural applications requiring higher load-bearing capacity without significantly increasing material thickness. The suffix “BR” signifies impact-tested material suitable for low-temperature environments, while “C” refers to controlled carbon content, enhancing weldability and toughness. These steels offer an excellent balance of strength, ductility, and formability, making them suitable for heavy structures, industrial equipment, and dynamic load-bearing applications across various sectors. Key Features: High yield strength (≥ 350 MPa) for stronger, thinner, and lighter components BR grade ensures impact resistance, tested at 0°C for improved safety C grade includes lower carbon content, improving weld quality and reducing the risk of cracking Excellent weldability and machinability for complex fabrication processes Typical Mechanical Properties: Property E350 BR / E350 C Yield Strength ≥ 350 MPa Tensile Strength 490–610 MPa Elongation ≥ 22% Impact Test BR: ≥ 27J at 0°C Weldability Excellent Common Applications: Heavy structural components in buildings and bridges Industrial fabrication and steel frameworks Crane booms, lifting platforms, and trailers Construction of pressure-bearing supports and platforms Machinery bases, storage vessels, and equipment housings Summary: IS 2062 E350 BR and E350 C are advanced structural steel grades that combine higher strength with excellent workability. Designed to perform under demanding load and environmental conditions, these grades are widely used in infrastructure, transport, and heavy machinery applications where performance and safety are critical.