DIN 17221:1988-12

This Standard is included in DIN Handbook 404 E. Applies to hot rolled semi-finished products; hot rolled and, where required, subsequently peeled or ground steel bars (rounds and flats); hot rolled ribbed spring steels; hot rolled wire; hot rolled wire flats, and hot rolled strip; made of the spring steels listed in Table 2, normally used for the production of quenched and tempered leaf springs, torsion bar springs, conical springs, helical springs, disc springs, spring washers, and any other springy components.