A buffing wheel and some stainless steel buffing compound of varying fineness will get most of the tiny scratches from the above cleaning methods. When buffing to a high shine or you get tired, then take the ladder to a business that will dip it in a chemical tank and passivate the metal. It will clean the metal allowing the metal to create its natural protective surface.
Delstar offers stainless steel passivation to ASTM A 967 specifications that make surfaces more passive and corrosion-resistant. Contact us today to request a quote!
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ASTM A967 passivation is citric acid, like Spotless Stainless.Nothing that special. And it won't stop the rust from coming back in salt water, only slow it just a little.
Citric 1: 4-10 w% Citric Acid, 140-160F, 4 Mins minimum
Citric 2: 4-10 w% Citric Acid, 120-140F, 10 Mins minimum
Citric 3: 4-10 w% Citric Acid, 70-120F, 20 Mins minimum
Citric 4: Other combinations of temperature time and concentration of citric acid with or without chemicals to enhance cleaning, accelerants or inhibitors capable of producing parts that pass the specified test requirements.
Citric 5: Other combinations of temperature time and concentration of citric acid with or without chemicals to enhance cleaning, accelerants or inhibitors capable of producing parts that pass the specified test requirements. Immersion bath to be controlled at pH of 1.8-2.2
Citric and Nitric are the ONLY acids in the ASTM standard, because they are more effective at preventing the return.
You can buy generic citric acid, making if as cheap as any acid. For best effect, with any acid, you will need a gelling agent.
Passivating Stainless