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Josef Bognar

Bruno Prinz

Horst Muhlberger

Ulrich Schafer

Wolf Wunder

A high ductility machinable cast iron with mixed austenitic-bainitic structure is made by a method which involves limiting the manganese content to less than 0.3% by weight and utilizing a substantially lower temperature austenitizing heat treatment (820.degree. to 830.degree. C.) for a shorter period (10 to 25 minutes) than has hitherto been considered to be necessary to achieve such structures. The low alloy cast iron can therefore be made from available scrap with low manganese content and at low cost.

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St. Leon-Rot, Germany

Josef Bognar