Need Corrosion information on 3003 Aluminum exposed to Formic Acid.

[norocketsci]

A competator has introduced an aluminum burial vault that will be exposed to Formic Acid.&nbsp;&nbsp;Formic acid exposure will take place as a gas and later as a liquid.&nbsp;&nbsp;Formic acid is a product of decomposition of the human body.&nbsp;&nbsp;I have been asked to provide relative information for comparison to steel.&nbsp;&nbsp;I've read some &quot;old&quot; information on aluminum corrosion tests in soil.&nbsp;&nbsp;There is mention of PH, drainage, & soil conductivity.&nbsp;&nbsp;I need more information to complete the picture.<br>Please help.<br>