Best Stainless Steel Cleaning Agents: A Guide to 11 Effective Formulas

Formula 1: Stainless Steel Surface Dust Removal Solution

Nitric acid50%(volume fraction)
Hydrogen peroxide30—60g/L
Water50%(volume fraction)15—25m/L  
Chromic anhydride70一100g/L100—150g/L
Sulfuric acid20—40g/L40—60g/L
Sodium chloride1~2g/L4—6g/L

After stainless steel is acid-etched to remove oxide scales, residual carbon ash can be eliminated using the above-mentioned chemical method.

Formula 2: Martensitic Stainless Steel Pickling Process

Hydrofluoric acid (relative density 1.1)27mL/L
Nitric acid (relative density 1.42)210—280 mL/L140一150 mL/L
Phosphoric acid (relative density 1.70)100一120 mL/L
Temperatureroom temperatureroom temperature

Formula 3: Nickel-Chrome Stainless Steel Pickling Process

Sulfuric acid (relative density 1.84)80~100g/L300~400g/L  
Nitric acid (relative density 1.42)130~170g/L
Hydrofluoric acid (relative density 1.1)40~70g/L80~140g/L130~140g/L
Ferric sulfate300~330g/L
Temperatureroom temperatureroom temperature65~70℃
Timel5~30min(Unblown sand) 1~3min(Sand blowing)15~45min20~30min
Sulfuric acid (relative density 1.84) 150~180g/L
Nitric acid (relative density 1.42) 250~300g/L
Hydrofluoric acid (relative density 1.1) 100~120g/L
Monarkite 40~50g/L
Sodium chloride 10~20g/L
Hydrochloric acid 60~80g/L  
Temperature 65~70℃room temperature
Time 20~30min5~10min

Formula 4: High-Efficiency Stainless Steel Pickling Paste

Mineral acid (nitric acid: hydrofluoric acid=1:1)15.0%~30.0%
(Alkylphenol polyoxyethylene ether and Castor oil ethylene oxide condensate)
Fillers (silica, etc.)20.0%
Corrosion inhibitor
(thiourea derivatives, Xylenol polyoxyethylene ether, etc.)
WaterAdd to 100%

First, dissolve inorganic acid in water, then sequentially add surfactants, fillers, and corrosion inhibitors. Stir and mix evenly to obtain the finished product.

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This solution has stable performance, good adhesion, strong cleaning power, and is easy to store and transport. It is suitable for cleaning carbon scale, dust, and grease in large stainless steel equipment such as reactors, heat exchangers, and towers.

Formula 5: Stainless Steel Tank Spray Cleaner

Component A

Sodium hydroxide38.0 copies
Sodium tripolyphosphate1.0 copies
sodium metasilicate10.0 copies
Sodium carbonate20.0 copies
Sodium lignosulfate1.0 copies
Sodium phosphate20.0 copies
Octylphenol polyoxyethylene ether
(mixture of E09-10 and E05)
0.5 copies

Component B

Deodorized methyl ethyl ketone45.0 copies
Aromatic Naphtha20.5 copies
Linear alkyl sulfonic acid10.0 copies
Sodium hydroxide2.5 copies
Hexanediol5.0 copies
Ethylene glycol monobutyl ether5.0 copies
Ethanolamine2.0 copies
Octylphenol polyoxyethylene ether (E09-10)5.0 copies
Water5.0 copies

Mix Components A and B, add water to make a 6 to 38g/L cleaning solution.

This cleaner is used for spray washing stainless steel tanks and yields excellent results.

Formula 6: Aluminum and Stainless Steel Cleaner

Phosphoric acid (85%)3%
Citric acid4%
Octylphenol polyoxyethylene (10) ether2%

Slowly add acid to water, then add butanone and a surfactant. If using cold water, pre-mix the surfactant with three parts warm water.

This solution is suitable for cleaning aluminum and stainless steel.

Formula 7: Stainless Steel Pickling Solution

Hydrochloric acid25%
Nitric acid5%
Sulfuric acid5%

This formula is used to remove iron filings, oxide scales, and rust spots from stainless steel. After pickling, the surface is brighter. The processing temperature is 50-60°C and the processing time is 30-60 minutes.

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Formula 8: Stainless Steel Surface Oxide Cleaner

Hydrogen peroxide (30%)1.5~5.0 copies
Hydrochloric acid (relative density 1.7)4.5~7.0 copies
Hydrofluoric acid (30%)1.0~5.0 copies

The above components can be mixed with an added adhesive to form a viscous acidic solution.

After this solution is applied to the stainless steel surface, it can dissolve any oxides formed on the surface, enabling oxide removal.

The feature of this solution is that it’s easy to use and does not require the addition of a pickling corrosion inhibitor.

Formula 9: Stainless Steel Surface Oxide Film Remover (I)

Sulfuric acid5%~l0%
Hydrofluoric acid2%~5%
WaterAdd to 100%

Processing conditions: room temperature, 60-80 seconds.

Formula 10: Stainless Steel Surface Oxide Film Remover (II)

Ferric trichloride200~250g/L  
Hydrochloric acidl00~150g/L

Processing conditions: room temperature, 90-150 seconds.

Formula 11: Remover for Sooty Sintered Material on Stainless Steel Surface Oxide Film.

Nitric acid6%~8%
Sulfuric acid8%~l0%
Hydrofluoric acid4%~6%
WaterAdd to 100%

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