There are many Acrylic Aluminum Letters enquirers recently.
In China market, people mainly choose stainless steel or powder coating iron as return since 2011. Aluminum is mainly for outdoor large logo, because it is much lighter...
The simple answer is 304 contains 18% chromium and 8% nickel while 316 contains 16% chromium, 10% nickel and 2% molybdenum. The molybdenum is added to help resist corrosion to chlorides (like sea water and de-icing salts).
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