<div dir="ltr"><div>A quick search reveals that "Tungum" is an Aluminum-Silicon-Nickel-Brass alloy that forms a particularly durable protective oxide layer, is extra corrosion resistant, and can be precipitation hardened like aluminum. <br><br><a href="http://www.supertechnical.com/products_files/TUNGUMALLOY.pdf">http://www.supertechnical.com/products_files/TUNGUMALLOY.pdf</a><br><br></div><div>It seems like the best and most expensive option for salt-water exposed high pressure oxygen components. Probably way overkill for a sub that only spends a day or two every other month in the water.<br></div><div><br></div><div>- River J. Dolfi<br></div><div><div class="gmail_signature"><div dir="ltr"><div><div><a href="mailto:rdolfi7@gmail.com" target="_blank">rdolfi7@gmail.com</a></div><div><a href="mailto:rwd5301@psu.edu" target="_blank">rwd5301@psu.edu</a></div></div></div></div>
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