Contact corrosion

Table of contact corrosion

METAL S
u
r
f
a
c
e*		 M
a
g
n
e
s
i
u
m

a
l
l
o
y		 Z
i
n
c		 H
o
t

d
i
p

g
a
l
v
a
n
i
z
e
d

s
t
e
e
l		 H
l
i
n
í
k
o
v
é

s
l
i
t
i
n
y		 A
l
u
m
i
n
i
u
m

a
l
l
o
y		 S
o
f
t

s
t
e
e
l		 L
o
w

i
m
p
u
r
i
t
y

s
t
e
e
l		 w
r
o
u
g
h
t

s
t
e
e
l		 Ch
r
o
m
e
d

s
t
e
e
l		 L
e
a
d		 T
i
n		 C
o
p
p
e
r		 S
t
a
i
n
l
e
s
s

s
t
e
e
l
Magnesium
alloy		 Small
Large		   V
L		 V
L		 V
L		 V
L		 V
V		 V
V		 V
V		 V
V		 V
V		 V
V		 V
V		 V
V
Zinc Small
Large		 L
M		   M
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M
Hot-dip
galavnized steel		 Small
Large		 L
M		 M
M		   L
M		 L
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M
Aluminium alloy Small
Large		 L
M		 M
M		 M
L		   M
M		 V
M
M		 V
L
L		 V
V
V		 V
V		 V
V
Cadmium
layers		 Small
Large		 M
L		 M
M		 M
L		 M
M		   V
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M
Soft 
steel		 Small
Large		 M
M		 M
M		 M
M		 M
M		 M
M		   L
M		 V
M		 V
M		 V
M		 V
M		 V
M		 V
M
Low impurity
steel		 Small
Large		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M		   M
M		 V
M		 V
M		 V
M		 V
M		 V
M
Wrought
steel		 Small
Large		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M		 L
M		   V
M		 V
M		 V
M		 V V
Chromed
steel		 Small
Large		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M		     L
M		 L
M		 V V
M
Lead Small
Large		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M		 M
L		 M
M		   M
M		 M
M
Tin Malý
Velký		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M
M		 M
L		   M
M		    
Copper Small
Large		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M		 M
M
M		 L L
M		 V
L		  
M
Stainless
steel		 Small
Large		 M
M		 M
M		 M
L		 M
M		 M
M
M		 M
M		 M
M
L		 M
L		 M
L
M		  

V = large metal corrosion (in the row of the table)

M = little or no corrosion of metal (horizontal)
L = light corrosion (in very humid environments) metal (horizontal)

*) The interaction between the surface of the metal and a metal surface in the appropriate column.

 

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