ENi-1 DMNA141

Class: ENi-1
AWS: A5.11

DURAMAX    NA141

Conforms to Certification: AWS A5.11 | ASME SFA 5.11

Weld Process: Shielded Metal Arc Weld Process (SMAW)

AWS Chemical Composition Requirements
C = 0.10 max Cu = 0.25 max
Mn = 0.75 max Ni = 92.0 min
Fe = 0.75 max Al = 1.0 max
P = 0.03 max Ti = 1.0 – 4.0
S = 0.02 max Si = 1.25 max
Other = 0.50 max

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Application
DURAMAX NA141 (ENi-1) has a nominal composition (wt.-%) of 95 Ni, 2.5 Ti. Electrodes of this classification are used for welding wrought and cast forms of commercially pure nickel to themselves and to steel (i.e. joining nickel to steel and surfacing steel with nickel). Typical specifications for the nickel base metal are ASTM B 160, B 161, B 162, and B 163, all of which have UNS Number N02200 or N02201. The weld metal has good corrosion resistance, particularly in alkalis. DMNA141 is well suited for welding chemical industry fabrications used to process vinyl chloride, fatty acids, soda, and sodium metal silicates.
• Used for joining Cu-Ni to stainless steels
• Welding of cast and wrought forms of pure Nickel alloys

Deposited Chemical Composition % (Typical)
C = 0.02 Mn = 0.30 Fe = 0.40
P = 0.01 S = 0.01 Si = 0.48
Cu = 0.01 Ni = 96.7 Al = 0.03
Ti = 1.2 TOE = <0.50
Deposited All Weld Metal Properties % (AW)
Tensile Strength 73,000 psi
Yield Strength 58,000 psi
Elongation 33%

Deposited Charpy-V-Notch Impact Properties %
Not applicable

Recommended Weld Parameters

Amperage (A)

Diameter of Wire Voltage (V) Flat Vertical and Overhead
3/32 inches (2.4mm) 20 – 23 70 – 80 65 – 80
1/8 inches (3.2mm) 21 – 24 80 – 110 75 – 95
5/32 inches (4.0mm) 22 – 25 120 – 160 Not Recommended
3/16 inches (4.8mm) 23 – 25 170 – 190 Not Recommended