ERNiCrMo-3

Class: ERNiCrMo-3
AWS: A5.14

Conforms to Certification: AWS A5.14 | ASME SFA A5.14

Weld Process: GMAW, ASAW Welding Processes

AWS Chemical Composition Requirements
C = 0.10 max Cu = 0.50 max
Mn = 0.50 max Ni = 58.0 min
Fe = 5.0 max Al = 0.40 max
P = 0.02 max Ti = 0.40 max
S = 0.015 max Cr = 20.0 – 23.0
Si = 0.50 max Nb + Ta = 3.15 – 4.15
Mo = 8.0 – 10.0 Other = 0.50 max

Available Sizes

Diameter X Spool Sizes Diameter X Coil Sizes
.035 x 33# 1/16 x COIL
.045 x 33# 3/32 x COIL
1/16 x 33# 1/8 x COIL
5/32 x COIL

Application
ERNiCrMo-3 (NA625) is used primarily for gas tungsten and gas metal arc and matching composition base metals. It is also used for welding Inconel 601 and Incoloy 800. It can be used to weld dissimilar metal combinations such as steel, stainless steel, Inconel and Incoloy alloys.

Deposited Chemical Composition % (Typical)
C = 0.09 Si = 0.12 Ni = Balance
Mn = 0.05 Cr = 21.9 Nb/Ta = 3.65
Fe = 0.62 Mo = 8.70
Deposited All Weld Metal Properties % (AW) 
Tensile Strength 114,000 psi
Yield Strength 66,000 psi
Elongation 35%

Deposited Charpy-V-Notch Impact Properties %
Not applicable

Recommended Welding Parameters for MIG and SAW Welding of Nickel Alloys

Process Diameter of Wire Voltage (V) Amperage (A) Gas
MIG .035 inches 26 – 29 150 – 190 75 % Argon +25% Helium
.045 inches 28 – 32 180 – 220 75 % Argon +25% Helium
1/16 inches 29 – 33 200 – 250 75 % Argon +25% Helium
SAW 3/32 inches 28 – 30 270 – 350 Suitable Flux May Be Used.
1/8 inches 29 – 32 350 – 450 Suitable Flux May Be Used.
5/32 inches 30 – 33 400 – 550 Suitable Flux May Be Used.

Note: Other shielding Gases may be used for Mig welding. Shielding gases are chosen taking Quality, cost, and Operability into consideration.

Note:  Both agglomerated and fused fluxes can be used for submerged arc welding.

Note: The chemical composition of the flux mainly affects the chemistry of the weld metal and consequently its corrosion resistance and mechanical properties.