ERNiCr-4
ERNiCr-4 is used for GMAW(gas-shielded metal arc welding) and TIG welding of 50/50 nickel/chromium alloy, overlaying steel, cladding nickel-chromium alloy onto nickel-iron-chromium tubing and casting repair. It is also used primarily for boiler tube overlay in coal fired boiler systems.
Common Names: FM72M Techalloy 72
Conformances: AWS A5.14, SFA-5.14, UNS N06072
CHEMICAL COMPOSITION(%)
C |
Si |
Mn |
S |
P |
Ni |
---|---|---|---|---|---|
0.01-0.1 |
≤0.2 |
≤0.2 |
≤0.01 |
≤0.01 |
Rest |
Cr |
Ti |
Fe |
Cu |
Others |
- |
42-46 |
0.3-1.0 |
≤0.5 |
≤0.5 |
<0.5 |
- |
WELDING PARAMETERS
Process |
Diameter |
Voltage |
Amperage |
Shielding Gas |
---|---|---|---|---|
TIG |
.035” (0.9mm) .045” (1.2mm) 1/16” (1.6mm) 3/32” (2.4mm) 1/8” (3.2mm) |
12-15 13-16 14-18 15-20 15-20 |
60-90 80-110 90-130 120-175 150-220 |
100% Argon 100% Argon 100% Argon 100% Argon 100% Argon |
MIG |
.035” (0.9mm) .045” (1.2mm) 1/16” (1.6mm) |
26-29 28-32 29-33 |
150-190 180-220 200-250 |
75% Argon + 25% Helium 75% Argon + 25% Helium 75% Argon + 25% Helium |
SAW |
3/32” (2.4mm) 1/8” (3.2mm) 5/32” (4.0mm) |
28-30 29-32 30-33 |
275-350 350-450 400-550 |
Suitable Flux may be used Suitable Flux may be used Suitable Flux may be used |
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