Tata Steel has developed a BIS-certified E350 structural steel that demonstrates exceptional fire resistance capabilities. According to reports from Business Standard, the steel can retain two-thirds of its room-temperature yield strength at 600°C for up to three hours, significantly enhancing structural resilience during fires. This advanced material technology addresses the critical need for fire-safe construction materials as modern buildings and industrial infrastructure prioritize safety and structural integrity. The superior strength comes from its advanced alloy design, based on an optimised combination of microalloying elements and microstructural engineering, which improves the steel's strength retention under elevated-temperature conditions without compromising the performance requirements of structural applications. As reported by Tata Steel, this strength retention can provide additional time for occupants to evacuate buildings during a fire.
The new steel has been certified by the Bureau of Indian Standards (BIS) under IS 15103, the Indian standard for fire-resistant structural steel. As reported by Business Standard, the product has been developed through an advanced alloy design involving an optimised combination of microalloying elements and microstructural engineering. This design approach enhances strength retention under elevated-temperature conditions, allowing sufficient time for people to evacuate the building safely in the event of a fire. The optimised microalloying elements and microstructural engineering create a material that can maintain structural integrity during fire situations, making it suitable for various fire-resistant structural components. According to Tata Steel, the hot-rolled E350 steel has been specifically designed to help buildings and engineering structures retain structural integrity during a fire.
According to Business Standard, the E350 grade is suitable for a range of fire-resistant structural components, including structural hollow tubes and sections used in pre-engineered buildings. These components are widely used in industrial facilities, warehouses and other large-span structures. The steel's ability to retain strength at elevated temperatures will slow the loss of load-bearing capacity of steel structures during a fire and provide occupants and emergency responders with additional time before structural performance is significantly compromised. The steel is an ideal solution for constructing safer and more resilient infrastructure, making it particularly valuable for modern construction projects that prioritise fire safety and structural integrity. As reported by Tata Steel, the new steel can be used to manufacture fire-resistant structural components and its application is aimed at construction projects where maintaining structural integrity during fire conditions is an important consideration.
As reported by Business Standard, the development comes against the backdrop of increasing adoption of steel-intensive construction, including pre-engineered buildings and structural steel systems, across industrial, commercial and infrastructure projects. While structural steel offers advantages in terms of strength, fabrication and construction speed, its strength declines as temperatures rise sharply during a fire, making fire performance an important consideration in structural design. The fire-resistant structural steel adds to Tata Steel's portfolio of value-added and specialised steel products to address emerging requirements in construction, infrastructure and engineering through material and process innovation. According to Tata Steel, the development forms part of its work in advanced materials and engineering, with the new steel designed to address fire-safety requirements while meeting the performance needs of modern construction. The BIS certification under IS 15103 provides a standards-based framework for the use of the steel as a fire-resistant structural material, with applications extending to structural sections and pre-engineered building components.
