Asahi Kasei's XYRON™ G803Z passes UL 2596 BETR test
- XYRON™ G803Z passed the UL 2596 Battery Enclosure Thermal Runaway (BETR) test.
- The material retained enclosure shape at approximately 750°C during the BETR test.
- XYRON™ withstood 563 kPa internal pressure and suppressed fire propagation from combustion gas leakage.
- Injection-moldable, it enables metal replacement and greater design freedom for EV, ESS and industrial battery enclosures.
Test outcome
Asahi Kasei's XYRON™ G803Z passed the Battery Enclosure Thermal Runaway (BETR) test specified in UL 2596, demonstrating thermal and mechanical performance targets for battery enclosure materials.
Measured performance
In the representative BETR test, XYRON™ G803Z retained its enclosure shape at approximately 750°C, withstood internal pressure up to 563 kPa, and suppressed fire propagation caused by combustion gas leakage.
Material advantages and applications
Unlike conventional long-fiber reinforced materials, XYRON™ is injection-moldable into complex geometries, offering weight reduction through metal replacement, higher-precision design freedom, heat resistance and flame retardancy. The results point to use in EV battery enclosures, residential energy storage enclosures, partition walls for industrial battery modules, and covers for backup power systems.
Developer comment and next steps
Rui Yoshioka of Asahi Kasei's XYRON Technology Development Department said passing the BETR test validates G803Z as a next-generation battery material addressing common safety and heat-resistance needs; development of additional high-heat, high-flame-retardant grades will continue and the company will promote the material to manufacturers worldwide.
Source: Asahi Kasei
