What is Mineral insulated (MI) heating? Certain heating applications are especially challenging. Mineral insulated heating has been designed to offer high watt density per square cm of surface area without loss of other performance characteristics. Furthermore, it offers a fast response time, long life time and the elements or cable can be readily bent by hand or production machinery to a desired configuration and retains that configuration after repetitive heating and cooling cycles. MI heating benefits Mineral insulated heating is known for its exceptional durability and mechanical strength. An MI heating cable used to construct these type of heaters, consists of a high-resistance conducting wire in a metal sheath. A magnesium oxide (mineral) layer provides excellent insulation. These sheathed heating solutions can withstand high temperatures and pressures even in corrosive atmospheres. It is the heating solution of choice for applications where the required temperature and power output go beyond the specifications of self-regulating or constant-wattage cables. Mineral insulated heaters have an excellent heat transfer and a constant power output, independent of temperature variations. Temperatures of up to 800 °C can be achieved in environments with an exposed temperature of up to 1000 °C. Exceptional durability and strength : Known for their high mechanical strength and durability, making them ideal for demanding environments. Excellent heat transfer : Provides constant power output independent of temperature variations, ensuring efficient heat transfer. Corrosion resistance : Sheath materials, like Inconel 600, Alloy 825, or stainless steel, offer resistance to corrosion, making it suitable for harsh environments. Versatile applications : Used in a variety of industries including aerospace, electronics, semiconductor and research institutes. Customizable specifications : Available in different resistance values and various lengths and diameters to match specific requirements. Insulation quality : Uses magnesium oxide for superior insulation, enhancing safety and performance. Precision heating : Offers precise temperature control with a range of conductor resistances, ensuring exact heat output Energy efficient : Provides consistent and reliable heating, improving energy efficiency in industrial processes. What are mineral insulated heaters made off? MI heaters are constructed with mineral insulated heating cables, which consist of one or two metal conductors, such as nickel or chromium, converting electrical energy into heat. The conductors are insulated with high quality magnesium oxide and covered with a heat, corrosion and pressure resistant metal sheath material, such as Inconel 600, Alloy 825, or stainless steel. What is the size (length / diameter) of a mineral insulated heaters? Our heaters are available in various lengths and diameters. In general, the length of the hot section of a micro heater starts around 100 mm. The maximum length is variable and depends on the sort of heater. For example, a heat tracing element can go up to 200 meters. The outside diameter of a heater can vary from 1.0 mm up to 13 mm. How bendable are mineral insulated heaters? They are highly bendable with a minimum bend radius of 5x the sheath diameter, allowing for easy installation and design flexibility. How are MI heating cables used? Mineral insulated heating cable is a semi-finished product that can be used to make heat tracing cable , heating elements or micro heaters . Kamet also offers a range of these (customized) finished products. It is Kamet’s particular area of expertise: making our in-house knowledge and skills available to customers in order to come up with the heating product that perfectly matches the application. Due to the variety of options for sheath material, they are suited for both hazardous and non hazardous applications. Furthermore, the range of conductor resistances allows precision adjustment to produce the exact heat required in any given application. Kamet’s mineral insulated heating cables are produced by our long-standing partners, Okazaki Manufacturing Company and ARi Industries. With an annual capacity of 10.000 km, Okazaki offers a large production capacity. This, in combination with their operations excellence and 70+ years of experience, means our mineral insulated heating cables are ensured of the highest quality . Additionally, Kamet also offers mineral insulated heating cables produced by ARi Industries. ARi Industries, located in the USA, is a leading supplier of customized mineral insulated cables and heating solutions. Read more about Okazaki Manufacturing Company and ARi Industries.