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The sheath material gives the MgO insulation its protection from the environment, contamination and potential mechanical damage. There is no material that is appropriate for all applications; you must consider the process temperature, corrosiveness, mechanical strength, cost and intended service life when selecting the material. • 304SS (4) maximum temperature is 1650 deg. F (900 Deg. C), it is most often used in low temperature processes and is the lowest cost of the stainless steels. Widely used in beverage, food, chemical and other industries where mild corrosion resistance is needed. It is susceptible to carbide precipitation at temperatures of 900 to 1600 Deg. F (480 to 870 Deg. C). • 310SS (0) maximum temperature is 2100 Deg. F (900 Deg. C), it contains 25% Chromium and 20% Nickel. Its corrosion resistance and mechanical strength is similar to 304SS but slightly better, has good heat resistance but not as ductile as the 304 series stainless steel. • 316SS (6) maximum temperature is 1700 Deg. F (900 Deg.C), it has the best corrosion resistance of all the stainless steel grades. It is susceptible to carbide precipitation at temperatures of 900 to 1600 Deg. F (480 to 870 Deg. C). It is widely used in the chemical and food industry. • Inconel 600 (I) maximum temperature is 2100 Deg. F (1175 Deg. C.) is the most predominately used sheath material due to its high temperature strength, resistance to chloride ion stress, corrosion resistance, oxidation resistance at elevated temperatures and it fairs well in nitriding environments. Inconel 600 must not be used in sulfur bearing environments. • Other sheath materials are available for special applications. Please consult the factory for your special request. For a complete list of sheath materials go to our website at www.gicsensors.com |
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