1/4” Aluminum Baseboard?

I would like to replace the MDF baseboard on my XXL with a nonabsorbent (and preferably stiffer) material. There are many posts on using 1/2” 6061 and ATP5 aluminum but 1/4” 3003 can be had for a third of the price in my area. Is this as rigid as the stock MDF or is 1/4” too thin? Thanks.

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