Class: ERNiFeCr-2

AWS: A5.14

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

Weld Process: GTAW Welding Process

AWS Chemical Composition Requirements
C = 0.08 max	Cu = 0.30 max
Mn = 0.35 max	Ni = 50.0 – 55.0
Fe = Remainder	Al = 0.20 – 0.80
P = 0.015 max	Ti = 0.65 – 1.15
S = 0.015 max	Cr = 17.0 – 21.0
Si = 0.35 max	Nb + Ta = 4.75 – 5.50
Mo = 2.80 – 3.30	Other = 0.50 max

Available Sizes
.035 x 36
.045 x 36
1/16 x 36
3/32 x 36
1/8 x 36

Application
ERNiFeCr-2 (NA718) filler metal is used by gas tungsten arc welding process for Cr-Ni-Nb-Mo alloys. Use of high heat impart process such as mig often results in micro-fissuring.

Deposited Chemical Composition % (Typical)
C = 0.04	Si = 0.12	Ni = 52.5
Mn = 0.25	Cr = 19.0	Nb/Ta = 5.0
Fe = Balance	Mo = 3.0	S = 0.009

Deposited Charpy-V-Notch Impact Properties %
Not applicable

Recommended Welding Parameters for TIG, MIG, and SAW Welding of Nickel Alloys
Process	Diameter of Wire	Voltage (V)	Amperage (A)	Gas
Tig	.035 inches x 36	12 – 15	60 – 90	100% Argon
	.045 inches x 36	13 – 16	80 – 110	100% Argon
	1/16 inches x 36	14 – 18	90 – 130	100% Argon
	3/32 inches x 36	15 – 20	120 – 175	100% Argon
	1/8 inches x 36	15 – 20	150 – 220	100% Argon

Note:  Other shielding Gases may be used for Tig 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.