DIN471-B hom elastic retaining nplhaib rau ncej, kev kho cua sov yuav tsum tau quenching thiab tempering.Cov khoom yog C67S caij nplooj ntoos hlav steel, thiab cov khoom nto yog kho.Lub caij nplooj ntoos hlav hlau yog qhov pib thaum tshav kub kub kho thiab phosphate, nrog cov tawv tawv thiab elasticity, thiab qhov saum npoo yog flushed thiab deburred.