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#1
April 4th 06, 01:33 PM
posted to rec.aviation.homebuilt
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Dissimilar metals in fuel tank
I'm in the process of building my fuel tanks. On the insiide I was
going to have stainless steel bolts going through the tank to hold to an aluminum bracket. I really don't know much about the metal industry but do remember that there can be a problem with dissimilar metals. Do anyone know if this will be a problem, especially with the fuel? Lou 
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#2
April 4th 06, 05:11 PM
posted to rec.aviation.homebuilt
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Dissimilar metals in fuel tank
Lou wrote:
I'm in the process of building my fuel tanks. On the insiide I was going to have stainless steel bolts going through the tank to hold to an aluminum bracket. I really don't know much about the metal industry but do remember that there can be a problem with dissimilar metals. Do anyone know if this will be a problem, especially with the fuel? Lou http://www.metal-mart.com/Guides/Galvanic.htm
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#3
April 5th 06, 12:06 AM
posted to rec.aviation.homebuilt
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Dissimilar metals in fuel tank
I'm in the process of building my fuel tanks. On the insiide I was
going to have stainless steel bolts going through the tank to hold to an aluminum bracket. I really don't know much about the metal industry but do remember that there can be a problem with dissimilar metals. Do anyone know if this will be a problem, especially with the fuel? Lou What's the difference between active and passive stainless steel then ? How can you tell the difference between the two for a given stainless steel screw or bolt ?
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#4
April 8th 06, 08:12 PM
posted to rec.aviation.homebuilt
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Dissimilar metals in fuel tank
Jason wrote: I'm in the process of building my fuel tanks. On the insiide I was going to have stainless steel bolts going through the tank to hold to an aluminum bracket. I really don't know much about the metal industry but do remember that there can be a problem with dissimilar metals. Do anyone know if this will be a problem, especially with the fuel? Lou What's the difference between active and passive stainless steel then ? How can you tell the difference between the two for a given stainless steel screw or bolt ? IIRC 'passivation' is a process wherein the stainless steel is treated with acid to remove any iron from the surface so that only nickle and chromium oxides are in contact with the environment. IOW, you send your weldment out to be passivated after you hare done fabricating it. FOr bolts, you'd buy them already passivated, assuming such things are available. -- FF
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