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|  Inconel 600/601 has been the envelope material of choice since the introduction of high temperature IFLs nearly 30 years ago. Inconel 600/601 is a widely available high temperature material, which is compatible with Cesium, Potassium and Sodium and has adequate oxidation resistance and reasonable high temperature creep strength. ACT's Inconel/Sodium IFLs are rated to 1,100°C for up to 1,000 hours of operation (based on creep strength). Experience gained from operating IFLs in a variety of applications, coupled with a growing desire to operate IFLs for longer than 1,000 hours at 1,100°C, has indicated a need for more robust, longer life IFLs specifically for use in the range of 1,000 to 1,100°C. ACT recently introduced a new line of Haynes/Sodium IFLs that can meet this demanding application requirement. The stresses in typical IFLs are in the range of 0.3 to 0.6ksi at 1,100°C (depending on the diameter). |
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The figure and table below show Haynes 230 has significantly greater creep resistance than Inconel 600/601. While life expectancy is dependent on each application, the data indicate that life expectancy improvements of 2:1 or better could be realized.
) Comparison of Stress to Produce 1% Creep in 1000 Hours (click graph to enlarge)
) Stress-Rupture Life for Various Alloys at Fixed Test Conditions (click graph to enlarge) ACT's UHT-IFLs are available in all the standard IFL sizes. Custom sizes are also available upon request. |
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  Pressure Controlled Heat Pipe Furnace Contact and Visit ACT Information ISO 9001:2000 and AS 9100-B Certification ACT Brochures and Product Datasheets
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