Attempting to braze a contaminated or improperly cleaned surface will result in an unsatisfactory joint.在被污染或未经正确清理的表面进行铜焊，其焊接效果将不会令人满意。
Copper phosphorus alloys. Useful for braze copper-copper or copper-brass, using flux.以铜和磷为主要成份，用于铜-铜或铜-铜合金的焊接，需要使用助焊剂。