Gas Construction

[CEKing]

Could someone tell me was the gas tank on a 1996 Corvette is constructed from? Is it steel, aluminum, an alloy, etc.?

 

[74bigblock]

Isn't it made from a Sheep's bladder?




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BaaaaahhhhHHHHH BahhhhHHHHHHHhhh

 

[Ken]

Super Terne-Coated Steel

• FUEL TANK:[*] Capacity: 20.0 gallons
• Location: Under rear deck
• Attachment: Rests on rear frame extension, held with straps
• Material: Super Terne-coated steel with high density polyethylene liner
• Weight: 30.0 lbs.
• Filler pipe location: Center of rear deck
• Filler pipe connection to tank: Bolted with gasket to top of tank
• Fuel line material: Super Terne-coated steel
• Fuel hose material: Viton
• Return line material: Super Terne-coated steel
• Vapor line material: Super Terne-coated steel

 

[CEKing]

Does anyone know what Super Terne coating is? Given the fact that the fuel tank has the Super Terne coating, what is the best way of handling surface rust. The tank is not pitted. It is almost like the surface is discolored where the tank was scuffed at some point in time.

 

[74bigblock]

Sounds like it might be like an undercoating spray.... not sure what it would be made of though.

 

[Ken]

Okay, I found a description of "Terne coating":

Terne coated sheet is cold rolled sheet that is hot-dip coated with a lead-tin alloy of approximately 92% lead and 8% tin. The coating, which has a dull gray finish, is very ductile and has a lubricating characteristic that enhances formability in drawing operations. Terne coated sheet continues to be used today because of its excellent corrosion performance when in contact with petroleum fuels. The lead-containing terne coating provides long-term barrier-type corrosion resistance. Recall that barrier corrosion means simply that the liquid medium is physically kept from contacting the steel to prevent corrosion of the steel. In addition to being used for fuel tanks, terne coated steel sheet has a number of specialty uses such as oil-filter shells; most are related to terne's excellent lubricating action when manufacturing deep-drawn parts.

There you have it, what you do with it is anybody's guess. :L

_ken