High Temperature Performance

Galvalume Plus steel resists intermediate and high temperatures far more effectively than galvanized steel.

Specifically, Galvalume Plus steel shows no discolouration up to 315°C (600°F) during continuous or intermittent exposure over a prolonged period. Above this temperature, some discolouration does occur and roughening of the surface is possible. Neither this discolouration nor roughening, however, reduces Galvalume Plus’s resistance to rust. Galvalume Plus maintains its rust-resistance up to 675°C (1,250°F).

Additionally, Galvalume Plus has excellent heat reflectivity, up to operating temperatures of about 315°C (600°F). This heat reflectivity makes a building cooler inside on hot, sunny days.