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Corrosion

Common Name for Chemical and Selection of Stainless Steel






The 'appropriate grades' notes are taken from the Avesta Sheffield Corrosion Handbook and are shown for general guidance only. Specific grade selection should be rechecked with corrosion tables. A link to the SST ORG web site article that describes where to find the corrosion tables on the Stainless steel tube corrosion can be found in the Related Links section of this article.

The table is referenced by the common name.

Common Chemical Names
Common name Chemical name Formula Grade selection
alum potassium aluminium sulphate KAl(SO4)2 304 or 316 useful at all concentrations, up to 50C
aqua fortis nitric acid HNO3 Selection of stainless steels for handling nitric acid (HNO3)
aqua regia nitric and hydrochloric acid mixture HNO3 and HCl Likely to attack most stainless steel, This mixture is used for dissolving gold.
bleach sodium hypochlorite NaOCl Selection of stainless steels for handling sodium hypochlorite (NaOCl) - Bleach
caustic potash potassium hydroxide KOH similar selection as for sodium hydroxide
caustic soda sodium hydroxide NaOH Selection of stainless steels for handling sodium hydroxide (NaOH)
chromic acid chromium trioxide CrO3 304 or 316 useful up to 40%, 20C
ethanol (alcohol) ethyl alcohol C2H5OH 304 or 316 useful at all concentrations, up to boiling point
glycol ethylene glycol (anti-freeze preparations) C2H4(OH)2 304 or 316 useful at all concentrations at ambient (or lower) temperatures
gypsum calcium sulphate CaSO4 304 or 316 useful at all concentrations, up to boiling point
Javelle (javel) water sodium hypochlorite NaOCl Selection of stainless steels for handling sodium hypochlorite (NaOCl) - Bleach
Labarraque's solution sodium hypochlorite NaOCl Selection of stainless steels for handling sodium hypochlorite (NaOCl) - Bleach
marine acid hydrochloric acid HCl Selection of stainless steels for handling hydrochloric acid (HCl)
methanol (alcohol) methyl alcohol CH3OH 304 or 316 useful at all concentrations, up to boiling point
muriatic acid hydrochloric acid HCl Selection of stainless steels for handling hydrochloric acid (HCl)
oil of vitriol sulphuric acid H2SO4 Selection of stainless steels for handling sulphuric acid (H2SO4)
oleum concentated sulphuric acid H2SO4 Selection of stainless steels for handling sulphuric acid (H2SO4)
rock salt sodium chloride NaCl Crevice and pitting corrosionhazard with most stainless steels, depending on conditions
salt acid hydrochloric acid HCl Selection of stainless steels for handling hydrochloric acid (HCl)
spirit of salt hydrochloric acid HCl Selection of stainless steels for handling hydrochloric acid (HCl)
sulphurated hydrogen hydrogen sulphide H2S Can be a pitting or stress corrosion cracking hazard to non-molybedum alloyed stainless grades
wood acid acetic acid (mainly) CH3COOH Selection of stainless steels for handling acetic acid (CH3COOH)

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321 321H Stainless Steel
347 347H Stainless Steel
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17-4 PH 630 UNS S17400 Stainless Steel
253MA S30815 Stainless Steel Tube
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2205 Duplex Pipe Tubing
S32101 Stainless Steel
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2507 Super Duplex Pipe
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EN 10216-5
ASTM A789 ASME SA 789 S31803 S32205 S32101 S32750 S32760 S32304 S31500 S31260 Seamless Tubes
EN 10216-5 1.4462 1.4362 1.4162 1.4410 1.4501 Seamless Tubes
Nickel Alloy Tubing:

UNS N08020 Alloy 20 Tubing
UNS N02200 Alloy 200 Tube
UNS N02201 Alloy 201 Pipe
UNS N04400 Monel 400 Tubing
N06600 Inconel 600 Tube
N06601 Inconel 601 Tubing
N06625 Inconel 625 Tubes
N08800 Incoloy 800 Tube
N08810 Incoloy 800H Tube
N08811 Incoloy 800HT Tubing
UNS N08825 Incoloy 825 Pipe
ASTM B622 N10276 C276 Tubing
ASTM B622 N06022 Hastelloy C-22 Alloy Tubes
C28000 Brass Seamless Tubes C44300 Brass Seamless Tubes
C68700 Brass Seamless Tubes
C70600 Copper Nickel Tubes
C71500 Copper Nickel Tubes
DIN 2391 Seamless Precision Steel Tubes
EN 10305-1 E215 E235 E355 Seamless Precision Steel Tube Tubing Tubes
DIN 2393 St28 St34.2 St37.2 St44.2 St52.3 Welded Precision Steel Tubes
EN 10305-2 E195 E235 E355 Welded Cold Drawn Precision Steel Tube