... -12.00mm Standard: EN 10270-1,SH, DIN17223, Grade C Material: SAE1080, 82A, 82B 1. Product Name: High carbon steel ... steel wires, mattress spring wire, high carbon spring steel wires2. Material: Steel GradeGB StandardCarbon%Silicon%Manganese%Phosphorus%Sulphur %Chromium%Nickel%Cuprum ... 17223-1, DIN EN 10270-1, JIS G 3521-1991, GB 4357-894. Main Markets: Argentina, South Korea, Israel, Malaysia, ...