Sapa Heat Transfer (Shanghai) Ltd. —————————————————————————————————————————————— 1 诸城源发材料推荐方案 The Proposal for ZCYF Radiator Project 萨帕铝热传输(上海)有限公司 2008-03-19 Sapa Heat Transfer (Shanghai) Ltd. —————————————————————————————————————————————— 2 一， 管材 Tube Material 目前，用于氮气保护气体钎焊的管料主要分三类： At present, there are three kinds of tube material for CAB. a） 普通常用的 AA3003 系列合金，具有较好的强度和抗腐蚀性能。 General AA3003 series alloy, which has enough strength and corrosion resistance properties. b） “长寿命”合金，具有较高的强度和优良的抗腐蚀性能。 Long life alloy, which has high strength and good corrosion resistance properties. c） 最新开发的合金，具有更高的强度和优秀的抗腐蚀性能。 Up to date new developed alloy, which has excellent strength and corro-sion resistance properties. 管料的发展方向是不断提高管材的机械性能满足材料减薄的要求，同时提高抗腐蚀性能,提高使用寿命，降低成本。 The trend is to improve the mechanical properties of the tube material to meet the requirement of down gauging, improve the corrosion resistance properties and the service life, and also cost saving. SAPA 向贵司推荐上述三类氮气保护气氛钎焊管材，并将其进行对比分析，供贵司参考选择。 SAPA recommend the above mentioned CAB tube materials for your choice, and we make the comparison list for your reference. 1,化学成分 Chemical Composition: 合金 Alloy 芯材 Core 钎焊侧 B/S 触水侧 W/S Si Fe Cu Mn Mg Zn Ti Zr FA82A4 FA5577 FA6671 FA7760 0.6 0.7 0.05 ~0.20 1.0 ~1.5 - 0.1 - - FA8EA4 FA5579 FA6671 FA7760 0.6 0.7 0.3 ~0.7 1.0 ~1.5 - 0.1 - - FA8HA4 FA7805 FA6671 FA7760 0.6 0.7 0.2 ~0.4 1.0 ~1.5 0.1 ~0.4 0.1 0.1 - FA8U** FA7857 0.5 0.5 0.25 ~0.5 1.0 ~2.0 0.03...
