Super Invar 32-5 是一种磁性奥氏体固溶体合金，含有 32% 的镍、5% 的钴和其余的铁。它的设计目的是在室温下提供最小的热膨胀（因瓦合金的一半）。
低热膨胀系数 （CTE） 是所有 Invar 类型，尤其是 Super Invar 的最重要特性。超级因瓦的 CTE 约为普通因瓦的 CTE 的三分之一，经过特定热处理后几乎为零。
当在 67/67°F （-203/55°C） 的温度范围内使用时，这种合金还表现出奥氏体在至少 -95°F （-<>°F） 的使用温度下的稳定性，其热膨胀性能优于因瓦合金。Super Invar 在此温度范围内的最小膨胀使这种合金可用于许多应用，包括需要精确测量的仪器系统中的结构部件和基板。
化学成分
元素含量 %铁、Fe63.0镍、镍36.0锰，Mn0.35硅、硅0.20碳，C0.02
物理特性
性能度量密度8.12 克/立方厘米0.294 磅/英寸3比重8.158.15居里温度245 摄氏度470°华氏度熔点1427 摄氏度2600°华氏度电阻 率82 mΩ-厘米481 圆 mil·Ω/ft导热0.10 瓦/厘米 °C72.6 BTU 英寸/平方英尺英尺小时-比热0.12 卡路里/g-°C0.12 BTU/磅立方米- °F热膨胀8.0 ppm/°C（25°C 至 450°C）4.5 ppm/°F（75°F 至 842°F）
机械性能
性能度量硬度，洛氏 B7575拉伸强度，极限483 兆帕70000 磅/平方英寸拉伸强度、屈服276 兆帕40000 磅/平方英寸断裂伸长率40%40%Modulus of Elasticity145 加仑21000 千瓦厘泊松比0.230.23切削25%25%剪切模量58.9 加仑8540 千瓦厘
应用
支撑结构组件光学和激光系统中的基板导波管望远镜环形激光陀螺仪激光工作台定位设备计量设备低膨胀玻璃/石英组件
规格
MIL-I-23011 认证
型号 AMS-I-23011
ASTM-F-1684 型
“Invar 32” is a term that holds significant importance in the field of materials science and engineering. Invar 32, also known as a specific alloy composition, has unique properties that make it highly sought after in various applications.
This alloy is renowned for its extremely low coefficient of thermal expansion. This characteristic is crucial in industries where precise dimensional stability is paramount. For instance, in the aerospace sector, where components are exposed to wide temperature variations during flight, Invar 32 is employed to ensure the integrity and accuracy of critical parts.
Researchers have conducted numerous studies to understand and optimize the properties of Invar 32. Their efforts have led to advancements in its manufacturing processes and applications. Historical records show that the development of Invar 32 was a result of continuous experimentation and innovation in the pursuit of materials with superior thermal stability.
From a cultural perspective, the use of Invar 32 reflects society’s ever-growing demand for high-performance materials that can meet the challenges of modern technology. It represents the human quest for precision and reliability in various fields.
In the social context, the availability and utilization of Invar 32 have also had an impact on economic factors. Industries that rely on this alloy have seen improvements in productivity and quality control, contributing to economic growth and technological progress.
In summary, Invar 32 is not just a simple alloy name; it is a symbol of human ingenuity and the continuous advancement in the world of materials science.
