COPPER ALLOY AND USE THEREOF FOR CAST MOULDING

摘要

Highly resistant materials are required in order to produce casting moulds, especially continuous casting dies for casting metal alloys at high casting speeds. The invention provides a copper alloy for casting moulds comprising up to 0.20 wt. % silver (Ag), 0.10 0.40 wt. % chromium (Cr) and 0.03 0.10 wt. % zirconium(Zr), the remainder consisting of copper (Cu) including production-related impurities whereby the electrical conductivity thereof is at least 51.5 MS/m (90 % IACS) and the Brinell hardness (HB 2,5/62,5) is at least 120 HB.