Copper Alloys Corrosion

 Application Data Sheet – Copper Alloys

Corrosion of Copper & Copper Alloys

 

‘R’ = the material is resistant to the named chemical up to the temperature shown, subject to limitations indicated by the footnotes (at end).
‘X’ = the material is not recommended.
‘n/a’ = data is not available

 

A

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Acetaldehyde
R R R R R R R R R R R R R R R
Acetic Acid (10%)
R R R X X X R R R R R R R R R
Acetic Acid (glac./anh.)
R R R X X X R R R R R X R R R
Acetic Anhydride
R R R X X X R R R R R R R R X
Aceto-acetic Ester
R R R R11 X X R R R R R R R R R
Acetone
R R R R R R R R R R R R R R R
Other Keytones
R R R R R R R R R R R R R R R
Acetonitrile
R6 X X X X X R6 X X R6 X X R6 X X
Acetylene
X X X R R R11 X X X X X X X X X
Acetyl Salicylic Acid
R R R n/a n/a n/a R6 X X R R R R R R
Acid fumes
R1 R1 R1 X X X R1 R1 R1 R1 R1 R1 X X X
Alcohols (mostly fatty)
R R R R R R R R R R R R R R R
Aliphatic esters
R R R R R R R R R R R R R R R
Alkyl Chlorides
n/a n/a n/a X X X R R R R R R R R R
Alum
R R R X X X R R R R R R R R R
Aluminium Chloride
R4 R4 X X X X R R R R R X R R R
Aluminium Sulphate
R R R R13 R13 X R13 R4,13 R4,13 R R R R13 R13 R13
Ammonia, Anhydrous
R R R X X X R R R12 R R R R R R
Ammonia, Aqueous
X X X X X X X X X X X X X X X
Ammonium Chloride
X X X X X X X X X X X X X X X
Amyl Acetate
R R R X X X R R R R R R R R R
Aniline
X X X X X X X X X X X X X X X
Antimony Trichloride
n/a n/a n/a X X X n/a n/a n/a n/a n/a n/a R X X
Aqua Regia
X X X X X X X X X X X X X X X
Aromatic Solvents
R R R R R R R R R R R R R R R
Ascorbic Acid
X X X X X X X X X X X X X X X

 

B

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Beer
R R R R R R R R R R R R R R R
Benzaldehyde
R R R n/a n/a n/a R R R R R R R R R
Benzene, pure
R R R R R R R R R R R R R R R
Benzoic Acid
R R R R R R X X X R R R X X X
Benzoyl Peroxide
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a
Boric Acid
R R R R R R R R R R R R R R R
Brines, Saturated
R R R X X X R R R4 R R R R R X
Bromide (K) Solution
R R R X X X R R X R R R R R X
Bromine
R4 X X X X X X X X R3 R3 R3 X X X
Bromine Liquid, tech.
R X X R X X R X X R X X R X X
Bromine Water, sat.aq.
R X X R X X X X X X X X X X X
Butyl Acetate
R R R R R R R R R R R R R R R

 

C

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Calcium Chloride
R R R X X X R R R R R R R R R
Carbon Disulphide
R X X R R R R R R R R X R R R
Carbonic Acid
R R R X X X X X X R R R X X X
Carbon Tetrachloride
R R R R R R R R R R R R R R R
Caustic Soda & Potash
R X X X X X R R R R R X R R R
Cellulose Paint
R R R R R R R R R R R R R R R
Chlorates of Na, K, Ba
R R R X X X R R R R R X R R R
Chlorine, dry
R R R R R R R R R R R R R R R
Chlorine, wet
X X X X X X X X X X X X X X X
Chlorides of Na, K, Mg
R R R X X X R R R4 R R R R R R
Chloroacetic Acids
n/a n/a n/a X X X n/a n/a n/a n/a n/a n/a n/a n/a n/a
Chlorobenzene
R R R n/a n/a n/a n/a n/a n/a R R R R R R
Chloroform
R R R R R R R R R R R R R R R
Chlorosulphonic Acid
R4 R4 R4 n/a n/a n/a X X X R R R X X X
Chromic Acid (80%)
X X X X X X X X X X X X X X X
Citric Acid
R R R X X X R R R R R R R R R
Copper Salts (most)
R R R X X X X X X R X X R R R
Cresylic Acids (50%)
R R R X X X R R R R R X R R R
Cyclohexane
R R R R R R R R R R R R R R R

 

D

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Detergents, Synthetic
n/a
n/a
n/a
R
R
R
R
R
R
R
R
R
R
R
R

 

E

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Emulsifiers (all conc.)
R R R n/a n/a n/a R R R R R R n/a n/a n/a
Esters
R R R R R R R R R R R R R R R
Ether
R R R R R R R R R R R R R R R

 

F

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Fatty Acids (>C6)
R R R X X X R R R R R R R R R
Ferric Chloride
X X X X X X X X X X X X X X X
Ferrous Sulphate
R4 R4 R4 X X X X X X R X X X X X
Fluorinated Refrigerants
R R R R R R R R R R R R R R R
Fluorine, dry
R R R3 X X X R R R R R R R R R
Fluorine, wet
X X X X X X X X X X X X X X X
Fluorosilic Acid
X X X X X X X X X X X X X X X
Formaldehyde (40%)
R R R R X X R R R R R R R R R
Formic Acid
R R R n/a n/a n/a R R R R R R R R R
Fruit Juices
R R R X X X R R R R R R R R R

 

G

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Gelatine
R R R R R R R R R R R R R R R
Glycerine
R R R R R R R R R R R R R R R
Glycols
R R R R R R R R R R R R R R R
Glycol, Ethylene
R X X R X X R R R R14 R14 R14 R R R
Glycollic Acid
R6 X X R6 X X R6 X X R6 X X R6 X X

 

H

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Hexamethylene Diamine
X X X X X X X X X X X X X X X
Hexamine
X X X X X X X X X X X X X X X
Hydrazine
X X X X X X X X X X X X X X X
Hydrobromic Acid (50%)
X X X X X X X X X X X X X X X
Hydrochloric Acid (10%)
R X X X X X X X X R X X X X X
Hydrochloric Acid (conc.)
R9 X X X X X X X X X X X X X X
Hydrocyanic Acid
R4 R4 R4 X X X X X X X X X X X X
Hydrofluoric Acid (40%)
R9 X X X X X X X X X X X X X X
Hydrofluoric Acid (75%)
R9 X X X X X X X X X X X X X X
Hydrogen Peroxide (30%)
X X XX X X X X X X R X X X X X
Hydrogen Peroxide (30-90%)
X X X X X X X X X X X X X X X
Hydrogen Sulphide
R3 R R R3 R R R3 R R R3 R3 R3 R3 R R
Hypochlorites
R X X X X X X X X X X X X X X
Hypochlorite (Na 12-14%)
R R R R R R R R R X X X X X X

 

I

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Iso-butyl Acetate
R
R
X
X
X
X
R
R
X
R
R
R
R
R
R

 

L

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Lactic Acid (90%)
n/a n/a n/a X X X X X X R R X R2 R2 X
Lead Acetate
X X X X X X X X X R R X X X X
Lead Perchlorate
R R R R R R R R R X X X X X X
Lime (CaO)
n/a n/a n/a n/a n/a n/a R R R R R R R R R

 

M

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Maleic Acid
R X X R X X R8 R8 X R R X n/a n/a n/a
Manganate, Potassium
R R R X X X X X X X X X R8 R8 X
Meat Juices
X X X X X X X X X n/a n/a n/a X X X
Mercuric Chloride
X X X X X X X X X X X X X X X
Mercury
R R R R R R R R R X X X X X X
Methanol
R R R R11 R11 R11 R R R R R R R R R
Methylene Chloride
R R X X X X X X X R R R R R R
Milk & Milk Products
R R R X X X R R R R R X R R R
Moist Air
R5 R5 R5 R5 R X R5 R R R R R R R R
Molasses
X X X X X X X X X R R R R5 R R
Monoethanolamine
R R R R R R R R R X X X X X X

 

N

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Naphtha
n/a n/a n/a n/a n/a n/a R R R R R R R R R
Naphthalene
n/a n/a n/a X X X X X X R R R n/a n/a n/a
Nickel Salts
R10 R10 R10 X X X X X X R R R R R R
Nitrates of Na, K, NH3
X X X X X X X X X R10 R10 X X X X
Nitric Acid (<25%)
X X X X X X X X X X X X X X X
Nitric Acid (50%)
X X X X X X X X X X X X X X X
Nitric Acid (90%)
X X X X X X X X X X X X X X X
Nitric Acid, Fuming
R R R R R R R R R X X X X X X
Nitrite (Na)
R R R R R R R R R R R R R R R
Nitrobenzine
R X X R X X R X X R R R R R R

 

O

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Oil, Diesel
R R R R R R R R R R X X R X X
Oils, Essential
R R X R R X R R X R R R R R R
Oils, Lube + Aromatic ads.
R R R R R R R R R R R X R R X
Oils, Mineral
R R R R R R R R R R R R R R R
Oils, Vegetable & Animal
R R R n/a n/a n/a R R R R R R R R R
Oxalic Acid
n/a n/a n/a n/a n/a n/a n/a n/a n/a R R R R R R
Ozone
R R R R R R R R R n/a n/a n/a n/a n/a n/a

 

P

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Paraffin Wax
X X X n/a n/a n/a X X X R R R R R R
Perchloric Acid
R R R R R R R R R X X X X X X
Petroleum Spirits
R R R R R R R R R R R R R R R
Phenol
R R R X X X R R R R R R R R R
Phosphoric Acid (20%)
R R R X X X X X X R R X X X X
Phosphoric Acid (50%)
R R R X X X X X X R R X X X X
Phosphoric Acid (95%)
R3 R3 R3 X X X X X X R X X X X X
Phosphorus Chlorides
n/a n/a n/a X X X X X X R X X X X X
Phosphorous Pentoxide
R R R n/a n/a n/a R R R n/a n/a n/a X X X
Phthalic Acid
X X X X X X X X X R R R R R R
Picric Acid
n/a n/a n/a X X X X X X R R R R R R
Pyridine
n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a X X X

 

S

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Salicyl Aldehyde
R R R R9 R R R R R n/a n/a n/a n/a n/a n/a
Sea Water
R R R n/a n/a n/a R R R R R R R R R
Silicic Acid
R R R R R R R R R X X X n/a n/a n/a
Silicone Fluids
X X X X X X X X X R R R R R R
Silver Nitrate
R R R2 R R R R R R X X X X X X
Sodium Carbonate
X X X X X X X X X R R R R R R
Sodium Peroxide
R R R R R R R R R R X X X X X
Sodium Silicate
X X X X X X X X X R R R R R R
Sodium Sulphide
R3 X X X X X X X X X X X X X X
Stannic Chloride
R R X n/a n/a n/a R R R X X X X X X
Starch
R R R R R R R R R R R R R R R
Sugar Soln, Syrups, Jams
n/a n/a n/a X X X R R R R R R R R R
Sulphamic Acid
R R R R R R R R R n/a n/a n/a X X X
Sulphates (Na, K, Mg, Ca)
R R R X X X R R R R R R R R R
Sulphites
n/a n/a n/a n/a n/a n/a X X X R R R R R R
Sulphonic Acids
X X X X X X X X X n/a n/a n/a n/a n/a n/a
Sulphur
R R R R R R R R R X X X X X X
Sulphur Dioxide, Dry
R R R X X X X X X R R X R R R
Sulphur Dioxide, Wet
R R R X X X R4 R4 X X X X X X X
Sulphur Dioxide, (96%)
R3 R R R3 R R R3 R R R R4 X R4 R4 R4
Sulphur Trioxide
R R R X X X R R R R3 R X R3 R R
Sulphuric Acid (< 50%)
R R9 X X X X X X X R X X X X X
Sulphuric Acid (70%)
R9 X X X X X X X X R X X X X X
Sulphuric Acid (95%)
X X X X X X X X X R X X X X X
Sulphuric Acid, Fuming
X X X X X X X X X X X X X X X
Sulphur Chlorides
R R R n/a n/a n/a R R R X X X X X X

 

T

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Tallow
R R R R R R R R R R R R n/a n/a n/a
Tannic Acid (10%)
R R R R R R R R R R R R R R R
Tartaric Acid
R R R R R R R R R R R R R R R
Trichlorethylene
R R X R R X R R X R R R R R R

 

U

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Urea (30%)
R
R
R
X
X
X
X
X
X
R
R
X
R
R
n/a

 

V

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Vinegar
R7
R
X
X
X
X
R7
R
X
R
R
R
X
X
X

 

W

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Water, Distilled
R R R R R R R R R R R R R7 R R
Water, Soft
R R R R R R R R R R R R R R R
Water, Hard
R R R R R R R R R R R R R R R
Wetting Agents (to 5%)
n/a n/a n/a n/a n/a n/a R R R R R R R R R

 

Y

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Yeast
R
R
R
X
X
X
X
X
X
n/a
n/a
n/a
R
R
R

 

Z

Aluminium
Bronze
Brass (a)
Copper
Copper Nickel
90/10 Alloys (b)
Gunmetal &
Bronze (c)
Temperature °C
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
20°
60°
100°
Zinc Chloride
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X

 

Footnotes:

(a)        Brass:  some type of brass have less corrosion resistance than is shown on the chart, others have more, e.g. aluminium brass.
(b)        Copper-nickel alloys:  Based on behaviour of Cu/Ni 90/10; 70/30 may be generally more resistant.
(c)        Gunmetal:  The data refer only to high tin gunmetals.

1
Depending on the acid
8
May discolour liquid/product
2
Fair resistance
9
Depending on type
3
Anhydrous
10
Not ammonium
4
Not aerated solutions
11
Provided more than 70% copper
5
Depending on Composition
12
Water less than 150ppm
6
Over 85%
13
Pure solution
7
In absence of dissolved O2 and CO2
14
With stabilizer

 

This chart provides general information on the corrosion resistance of copper and copper alloys.
Please consult Austral Wright Metals for advice on your specific application.

 

The technical advice and recommendations made in this Product Data Sheet should not be relied or acted upon without conducting your own further investigations, including corrosion exposure tests where needed. Please consult current editions of standards for design properties. Austral Wright Metals assumes no liability in connection with the information in this Product Data Sheet. Austral Wright Metals supplies a comprehensive range of stainless steels, copper alloys, nickel alloys and other high performance metals for challenging service conditions.  Our engineers and metallurgists will be pleased to provide further data and applications advice.
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