Join Date: Jan 2003
Location: Maine Coast
Thanked 310 Times in 240 Posts
Rep Power: 18
Re: Removing rust stains from "Starboard"
Since I didn't even know SS had a "passive chromium oxide layer", think I'm going to listen to the Metalfinisher!
Spotless Stainless works wonders!! It is citric based so falls into the passivating
/safe for SS category not the damaging
/unsafe for SS category when it comes to acids. Nitric and Citric are the two acids that can physically passivate or repassivate SS. You can't easily get nitric.....
No other acids should be used on SS other than Citric or Nitric, unless you want to risk permanent damage.
Muriatic/Hydrochloric, Oxalic etc. should NOT be used on SS.. MetalFinisher is spot on about this.....
-Maine Sail / CS-36T
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Last edited by Maine Sail; 12-20-2013 at 08:10 AM.