... :2B BA 6K 8K HLapplication range: High-strength parts, spring building structure, bus, car wheels, cover platerstensil strength:1100 ... to 2000 N/mm2Tempered spring steel stripMaterial grade: c50,c55,c60,c67,c70,c75 ... container for standard sea worthy Application: metal parts,construction tool,agricutural tool,roller shutter spring 1065 spring steel strip