New E350 grade retains two-thirds of its room-temperature yield strength at 600°C for up to three hours

 

THEBUSINESSBYTES BUREAU

MUMBAI, OCTOBER 5, 2026

Tata Steel has developed a hot-rolled, fire-resistant E350 structural steel aimed at enhancing the safety and resilience of buildings and engineering structures during fire incidents.

The new steel has been certified by the Bureau of Indian Standards (BIS) under IS 15103, the Indian standard for fire-resistant structural steel, marking an addition to Tata Steel’s portfolio of value-added products for the construction and infrastructure sectors.

The company said the steel can retain two-thirds of its room-temperature yield strength at 600°C for up to three hours. The enhanced strength retention is attributed to an advanced alloy design involving an optimised combination of microalloying elements and microstructural engineering.

 “As fire safety assumes greater importance in the design of modern infrastructure, material innovation is critical to enhancing structural resilience. At Tata Steel, we are leveraging our expertise in advanced materials and engineering to address such evolving needs,” said Subodh Pandey, Vice-President — Technology, R&D, New Material Business, and Graphene, Tata Steel.

The BIS-certified product, he said, was designed to enhance structural safety while meeting the performance requirements of modern construction.

According to Tata Steel, the material’s ability to retain strength at elevated temperatures can help structural members withstand fire for longer, potentially providing additional time for occupants to evacuate buildings safely.

The steel can be used in a range of fire-resistant structural applications, including structural hollow tubes and sections used in pre-engineered buildings. The company said the product could support the construction of structures designed for greater resilience under fire conditions.

The development comes as fire safety considerations gain increasing importance in the design and construction of modern buildings, where the performance of structural materials under extreme temperatures is a critical factor in maintaining structural integrity.