This standard specifies the terminology, symbols, calculation formulas and technical requirements for cylindrical tension springs made of cold-drawn steel wire with circular cross-section. This standard applies to cylindrical spiral tension springs made of carbon steel 70E or alloy steel 65Si2MnWA circular cross-section cold-drawn steel wire.
HB 3-54-2008 Referenced Document
GB/T 4358-1995 Corbon spring steel wire for significant use