ALPOLIC®/fr -SCM is composed of a fire-retardant mineral-filled core sandwiched between two skins of stainless steel sheets. The core material is made of fire-retardant mineral-filled core (70% aluminum trihydroxide) providing unsurpassed fire-retardant benefits. Both topside and backside skins make use of 0.3 mm thick stainless steel sheets (NSSC 220M). The use of highly rust-resistant ferritic stainless steel offers outstanding rust resistance superior to conventional stainless steel 316.