| 摘要 |
An age-hardening copper alloy made of - as expressed in each case in weig ht % - 0.4 % to a maximum of 2 % cobalt which is partially replaceable by nickel, 0.1 % through 0.5 % beryllium, optionally 0.03 % through 0.5 zirconium, 0.005 % through 0.1 % magnesium and possibly a maximum of 0.15 % of at least one element from the group including niobium, manganese, tantalum, vanadium, titanium, chromium, cerium and hafnium. The remainder is copper inclusive of production-conditioned impurities a nd usual processing additives. This copper alloy is used as the material for producing casting molds, in particular for the sleeves of continuous casting rolls as components of a two-roll casting installation.
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