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① Steels may be supplied with a lower silicon content. In this case, alternative means of deoxidation shall be used.
② Steels with improved machinability either by higher sulfur levels up to about 0,10 % S (including controlled sulphide morphology) or lead additions may be available on request. In the first case, the upper limit of the Mn-content may be increased by 0,15 %.

注：Steels C50 in delivery condition +C may be soft annealed before cold drawing.