Several materials can be used as heating elements for temperatures around 130 ºC. Some common options include:
Kanthal: Kanthal is an iron-chromium-aluminum (FeCrAl) alloy commonly used in heating elements. It has high resistance and good oxidation resistance, making it suitable for high-temperature applications.
Stainless Steel: Certain grades of stainless steel, such as 316 stainless steel, exhibit good heat resistance and can be used as heating elements at temperatures around 130 ºC. Stainless steel alloys with high chromium content provide improved oxidation resistance.
Constantan: Constantan is a copper-nickel alloy with high electrical resistance. It has good resistance to oxidation and can be used as a heating element for moderate-temperature applications.
Tungsten: Tungsten is a refractory metal with a very high melting point and excellent heat resistance. It is commonly used in high-temperature heating elements, including those used in vacuum furnaces.
Ceramic materials: Certain ceramic materials, such as silicon carbide (SiC) and molybdenum disilicide (MoSi2), exhibit excellent heat resistance and can be used as heating elements in high-temperature applications.
It's important to consider factors such as electrical resistance, oxidation resistance, thermal conductivity, and mechanical properties when selecting a heating element material for a specific temperature range. The specific requirements of the application, such as the desired heating rate, environment, and electrical power, should also be taken into account when choosing the appropriate heating element material.