Back: Aluminized para-aramid blend is a strong and extremely heat resistant fabric. It is composed of para-aramid blend fibers surrounding fiberglass materials, and finished with an aluminized coating. Like many of the other aluminized primary protective fabrics, it performs very well on tests for both the EN 531 (presently superseded by the EN ISO 16112), and ASTM F955 certifications. Aluminized para-aramid blend provides a high degree of protection from molten aluminum and iron splash, as well as radiant heat. However, its fiberglass content also makes it protective against high contact heat, withstanding temperatures of 400-600° F. The fabric weight, its molten metal splash protection, and its high contact heat capability make it a great choice for gloves, mitts, safety sleeves and aprons. It also lends itself well to any garments worn where there is a higher probability of contact, or handling of extremely hot surfaces or objects. Front: Aramid wrapped around a fiberglass core. Provides good cut and abrasion resistance. 600°F working temperature and up to 1000°F intermittently.