Hyundai Steel has become the first company in South Korea to obtain KS certification for H-beams that possess both fire resistance and seismic performance, demonstrating its competitiveness in the high-performance construction steel sector.
The company announced on November 12 that it has received KS certification for its fire-resistant and seismic H-beam 'SHN355FR' in accordance with the 'KS D 3866' standard (hot-rolled structural steel for construction). This makes Hyundai Steel's Incheon plant the first facility in the country to achieve KS certification for fire-resistant and seismic H-beams under the revised KS D 3866 standard.
SHN355FR is a fire-resistant and seismic H-beam with a yield strength of 355 MPa, ensuring the required deformation capacity and seismic performance during earthquakes, while also maintaining excellent strength characteristics in the event of a fire. It can withstand loads of approximately 36 kg per square millimeter and retains over 67% of its yield strength at room temperature even when exposed to temperatures of up to 600 degrees Celsius, ensuring structural stability during fire situations.
This certification is based on the KS D 3866 standard revised and announced by the Ministry of Trade, Industry and Energy in July 2024. The revised standard newly incorporates fire-resistant and seismic H-beams (SHN-FR) with yield strengths ranging from 355 to 460 MPa, which can respond to both earthquakes and fires, in addition to the existing seismic H-beams (SHN).
As the trend toward taller and larger buildings accelerates, the importance of technologies that can simultaneously address fire and earthquake risks is increasing. In response, Hyundai Steel has focused on developing fire-resistant and seismic steel based on its accumulated expertise in seismic steel technology.
The KS certification for SHN355FR is significant as it officially recognizes the excellence of both the product's performance and the manufacturing and quality management systems for construction steel that requires both fire and seismic resistance.
The company plans to continue its research and development in the field of fire-resistant and seismic construction steel based on the manufacturing and quality management technologies secured through this KS certification.
A Hyundai Steel official stated, "The acquisition of the first SHN355FR KS certification in the country is a recognition of our long-accumulated technology and manufacturing capabilities in fire-resistant and seismic steel. We will continue to enhance the technology level in the field of fire-resistant and seismic construction steel through ongoing research and development and quality improvement, contributing to the creation of a safer construction environment."
* This article has been translated by AI.
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