JohnH created the topic: Range of Sulfuric Acid Tantalum is Good For?
Hi,
My application uses range of sulfuric acid (H2SO4) from 98% to about 10% at temperature less than 200F. Will your tantalum diffusion surfaces be corrosion resistant in that range of conditions?
gambale replied the topic: Range of Sulfuric Acid Tantalum is Good For?
Thanks for the question,
Tantalum metal is excellent in all concentrations of sulfuric acid up to 99%. Oddly enough at concentration 99% or above, carbon steel could be used, but the moment it dips to 98% or less, H2SO4 will corrode carbon steel quickly.
To better understand tantalum's corrosion resistance to H2SO4 see the following Sulfuric Acid Iso-Corrosion Curve.
ultrametcpt.com/acids/h2so4.html