CuCr1 UNS.C18200 Chromium Copper is a heat treatable copper alloy offering good electrical conductivity, resistance to softening at elevated temperatures and good strength and hardness. This combination of properties makes C18200 one of the preferred resistance welding electrode materials for a variety of applications. Nominally composed of 99.1% copper and 0.9% chromium, this heat treatable alloy can be brought to its softest condition by annealing it at 1000°C (1850°F) for one-half hour at temperature, then rapidly quenching it in water. Thanks & Regards Lindy Chen ALB Copper Alloys Co., Ltd. Xiamen, China Tel: +86-592-5631276 Fax: +86-592-5750151 Email:Lindy.Chen@alb-copperalloys.com Please visit our website:www.alb-copperalloys.com