Exceptional heat reflection and insulation effects with over 50% infrared reflectivity and low thermal conductivity; additional condensation prevention functionality
POSCO has secured energy-saving product certification for its Pos E-save product from CRRC*, a specialized U.S. energy conservation certification body.
*CRRC: Cool Roof Rating Council
▲A building utilizing Pos E-save products
CRRC independently tests products for solar reflectance and thermal emittance, certifying those that meet required standards. Obtaining this certification allows products to display the CRRC certification mark, instilling confidence in consumers and construction professionals.
POSCO’s newly certified heat-reflective and insulating steel sheet, Pos E-save, is a high-performance surface-treated steel sheet. It employs solar-reflective materials as a coating to block external heat and incorporates micropores in the coating to minimize heat transfer, thus providing an insulation effect.
While conventional color-coated steel sheets for building exteriors typically have an infrared reflectance of about 17%, Pos E-save achieves approximately 50%. Under identical conditions, this can lower roof surface temperatures by over 10°C compared to traditional color-coated steel sheets.
Primarily used for steel building materials, this steel sheet contributes to cooling energy savings in summer by preventing building and roof surface temperatures from rising excessively. In winter, it aids in heating energy conservation by preventing internal temperature loss. Furthermore, with a thermal conductivity of 0.2W/(m·K)*, it offers excellent insulation, capable of preventing condensation caused by temperature differences between interior and exterior during winter months.
*Water’s thermal conductivity is about 0.6 W/(m⋅K), aluminum’s is 237(m⋅K)
It also features noise reduction capabilities for external sounds such as raindrops and boasts superior weather resistance, garnering attention in Korea and international architectural cladding markets.
The Automotive Steel Surface Research Group, which led the product development, stated, “Recent climate changes have heightened interest in building exterior materials that can improve energy efficiency. The U.S. CRRC certification validates the energy efficiency superiority of our developed product. We will continue focusing on developing products that contribute to energy conservation.”