摘要 |
PURPOSE:To obtain an age-hardening Fe-base hard corrosion-resisting alloy excellent in mirror-finish characteristics, by incorporating specific amounts of Mo, Cr, and Co to Fe and substituting V and Mn for a part of Co. CONSTITUTION:As an Fe-base alloy excellent in mirror-finish characteristics and corrosion resistance as a material for metal mold for resin molding, an Fe-base alloy having a composition which consists of, by atom., 2-22% Mo, 2-19% Cr, 2-48% Co, and the balance Fe and in which a part of Co is substituted by <=10% V and/or <=10% Mn is used. At this time, the components are regulated so that Mo+Cr content and Co+V+Mn content are within the area A enclosed wit a line connecting the points from (a) to (g) and also Mo content and Cr content are within the crosshatched area enclosed with a line connecting the points from (h) to (k). In this way, the hard Fe-base alloy having superior mirror-finish characteristics and also excellent in corrosion resistance can be obtained.
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