4J29/F15合金
产品形式:棒、板、管、法兰、带材、丝、锻件等
产品规格范围:直径6-500mm,长度0.5-30m;
产品规格范围:厚度0.5-80mm,长1-6米,宽0.5-3m
产品规格范围:外径6-530mm,壁厚0.5-50mm,长度1-12m
可根据客户要求试制或生产
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销售单位:上海长沁实业有限公司
业务传真:021-37631727 业务电话:021-61990095
销售经理:陈先生 15216656030
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4J29合金又称可伐(Kovar)合金。该合金在20~450℃具有与硅硼硬玻璃相近的线膨胀系数,居里点较高,并有良好的低温组织稳定性。合金的氧化膜致密,能很好地被玻璃浸润。且不与汞作用,适合在含汞放电的仪表中使用。是电真空器件主要密封结构材料。
4J29化学成分
C≤0.03% ,Mn≤0.50%, Si≤0.30% ,P≤0.020% ,S≤0.020% ,Cu≤0.20%, Cr≤0.20% ,Mo≤0.20%
Ni=28.5~29.5%, Co=16.8~17.8%
Fe=余量
平均线膨胀系数(10-6℃)
20~100℃ | 20~300℃ | 20~400℃ | 20~450℃ | 20~500℃ | 20~530℃ | 20~600℃ |
- | - | 4.6~5.2 | 5.1~5.5 | - | - | - |
4J29热处理制度
标准规定的膨胀系数及低温组织稳定性的性能检验试样,在氢气气氛中加热至900℃±20℃,保温1h,再加热至1100℃±20℃,保温15min,以不大于5℃/min速度冷至200℃以下出炉。
4J29应用概况与特殊要求
该合金是国际通用的典型的Fe-Ni-Co硬玻璃封接合金。经航空工厂长期使用,性能稳定。主要用于电真空元器件如发射管、振荡管、引燃管、磁控管、晶体管、密封插头、继电器、集成电路的引出线、底盘、外壳、支架等的玻璃封接。在应用中应使选用的玻璃与合金的膨胀系数相匹配。根据使用温度严格检验其低温组织稳定性。在加工过程中应进行适当的热处理,以***材料具有良好的深冲引伸性能。当使用锻材时应严格检验其气密性。
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采购须知:
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客户在咨询前,务必告知上海长沁销售部所用选择的材料需具备什么特性,硬度,是开什么模具或者做什么用到的,方便选材部门为客户提供更专业的服务!
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