2.08.4.1 In Air and in Water
Nickel does not lose its metallic brightness and does not discolor indoors, but it does slightly discolor outdoors, and a thin adhesive sulfate corrosion film is formed.
Nickel-copper alloys also maintain metallic brightness, but they turn into a charcoal color and form an adhesive corrosion film in the presence of
|
Table 10 Filler metal of nickel-based alloys
|
Marks Chemical compositions (%)
|
|
|
|
|
|
|
|
|
|
|
|
|
Ultimate tensile strength at R. T. (MPa)
|
Elongation
|
Applicable
mother
metal
|
|
C
|
Mn Fe
|
P
|
S
|
Si
|
Cu
|
Ni
|
Cr
|
Mo
|
Nb + Ta
|
Co
|
Al
|
Ti
|
W
|
Others
|
|
|
AWSA5.14 ERNiCr-3 40.10
|
2.5-3.5 43.0
|
40.03
|
40.015
|
40.50
|
40.50
|
467.0
|
18.0
22.0
|
—
|
2.0-3.0
|
—
|
—
|
40.75
|
—
|
40.50
|
4552
|
430
|
Alloy 600
|
|
ERNiCrFe-5 40.08
|
41.0 6.010.0
|
40.03
|
40.015
|
40.35
|
40.50
|
470.0
|
14.0
17.0
|
—
|
1.5-3.0
|
—
|
—
|
—
|
—
|
40.50
|
4552
|
430
|
Alloy 600
|
|
ERNiCrFe-6 40.08
|
2.0-2.7 418.0
|
40.03
|
40.015
|
40.35
|
40.50
|
467.0
|
14.0
17.0
|
—
|
—
|
—
|
—
|
2.5-3.5
|
—
|
40.50
|
4552
|
430
|
Alloy 600
|
|
ERNiCrFe-7 40.04
|
41.0 7.011.0
|
40.02
|
40.015
|
40.50
|
40.30
|
a
|
28.0
31.5
|
40.50
|
40.10
|
—
|
41.10
|
41.0
|
—
|
40.50
|
4552
|
430
|
Alloy 690
|
|
ERNiCrMo-3 40.10
|
40.50 41.0
|
40.02
|
40.015
|
40.50
|
40.50
|
458.0
|
20.0
23.0
|
8.0
10.0
|
3.15
4.15
|
—
|
40.40
|
40.40
|
—
|
40.50
|
4720
|
430
|
Alloy 625
|
|
ERNiCrMo-2 0.050.15
|
41.0 17.020.0
|
40.04
|
40.030
|
41.0
|
40.50
|
a
|
20.5
23.0
|
8.0
10.0
|
—
|
0.50
2.5
|
—
|
—
|
0.20
1.0
|
40.50
|
—
|
|
Alloy X
|
|
ERNiCrMo-4 40.02
|
41.0 4.07.0
|
40.04
|
40.030
|
40.08
|
40.50
|
a
|
14.5
16.5
|
15.0
17.0
|
—
|
42.5
|
—
|
—
|
3.0
4.5
|
40.50
|
4690
|
430
|
Alloy C-276
|
|
ERNiFeCr-2 40.08
|
40.35 a
|
40.015
|
40.015
|
40.35
|
40.30
|
50.0
55.0
|
17.0
21.0
|
2.80
3.30
|
4.75
5.50
|
41.00
|
0.20
0.80
|
0.65
1.15
|
|
B 4 0.006
|
41138
|
|
Alloy 718
|
aAs remainder.
|
|
 |
 |
|
Table 11 Shielded metal arc welding electrode
|
Marks
|
C
|
Mn
|
Fe
|
P
|
S
|
Si
|
Cu
|
Ni
|
Cr
|
Mo
|
Nb + Ta
|
Co
|
Al
|
Ti
|
W
|
Others
|
Ultimate tensile strength at R. T. (MPa)
|
Elongation Applicable mother metal
|
|
AWSA5.11 ENiCrFe-1
|
=0.08
|
=3.5
|
= 11.0
|
=0.03
|
=0.015
|
ІІЛ
p
Ol
|
ІІЛ
0
01
о
|
^62.0
|
13.0
17.0
|
—
|
1.5
4.0
|
—
|
—
|
—
|
—
|
=0.50
|
^552
|
^30
|
Alloy 600
|
|
ENiCrFe-2
|
=0.10
|
1.0
3.5
|
= 12.0
|
=0.03
|
=0.02
|
=0.75
|
=0.50
|
^62.0
|
13.0
17.0
|
0.50
2.50
|
0.5
3.0
|
—
|
—
|
—
|
—
|
=0.50
|
^552
|
^30
|
Alloy 600
|
|
ENiCrFe-3
|
=0.10
|
5.0
9.5
|
= 10.0
|
=0.03
|
=0.015
|
= 1.0
|
=0.50
|
^59.0
|
13.0
17.0
|
—
|
1.0
2.5
|
—
|
—
|
= 1.0
|
—
|
=0.50
|
^552
|
^30
|
Alloy 600
|
|
ENiCrFe-7
|
=0.05
|
=5.0
|
7.0
12.0
|
=0.03
|
=0.015
|
=0.75
|
=0.50
|
a
|
28.0
31.5
|
=0.50
|
1.0
2.5
|
—
|
=0.50
|
=0.50
|
—
|
=0.50
|
^552
|
^30
|
Alloy 690
|
|
ENiCrMo-3
|
=0.10
|
= 1.0
|
=7.0
|
=0.03
|
=0.020
|
=0.75
|
=0.50
|
^55.0
|
20.0
23.0
|
8.0
10.0
|
3.15
4.15
|
—
|
—
|
—
|
—
|
=0.50
|
^724
|
^30
|
Alloy 625
|
|
ENiCrMo-4
|
=0.02
|
= 1.0
|
4.0
7.0
|
=0.040
|
=0.030
|
=0.2
|
=0.50
|
a
|
14.5
16.5
|
15.0
17.0
|
—
|
=2.5
|
—
|
—
|
3.0
4.5
|
=0.50
|
^690
|
^30
|
Alloy C-276
|
‘As remainder.
|
|
|
Table 12 Welding condition example for automatic gas tungsten arc weld
|
Mother
metal
|
No. of pass
|
Wire (dia:mm)
|
Current (A)
|
Velocity (mm min-1)
|
Ar flow rate (l min-1)
|
Interpass temperature (°C)
|
|
Alloy 600
|
1
|
YNiCr-3
|
200-240
|
40
|
Torch 25
|
S150
|
|
2-6
|
|
|
80-120
|
|
|
|
Alloy 625
|
1
|
YNiCrMo-3
|
230-260
|
40
|
Torch 25
|
S150
|
|
2-6
|
|
|
80-140
|
|
|
|
Alloy C-276
|
1
|
YNiCrMo-4
|
60
|
52
|
Torch 10
|
—
|
|
AlloyX
|
1-15
|
YNiCrMo-2
|
130-170
|
50-80
|
Torch 15
|
S150
|
|
Alloy XR
|
1-2
|
Alloy XR
|
60
|
50-100
|
Torch 15
|
S100
|
|
Alloy 718
|
1
|
Alloy 718
|
60
|
80
|
Torch 15
|
S100
|
|
2
|
|
45
|
70
|
|
|
|
sulfur pollutants outdoors and into a green-gray color when near a beach.
Nickel-chromium, nickel-chromium-iron, nickel — molybdenum, and nickel-chromium-molybdenum alloys do not lose their metallic brightness, and do not discolor indoors or outdoors.
Nickel has excellent corrosion resistance in natural and distilled water. Nickel and nickel-clad steels have been used for household water tanks, due to their very low corrosion rates, <0.0005 mm year — .
Nickel-copper alloys also show excellent corrosion resistance in natural water and distilled water. These alloys have been applied as seamless tubes in feed water economizers in fossil-fuel electric power plants.
