ENiCrMo-10 DMNA122

Class: ENiCrMo-10
AWS: A5.11

DURAMAX NA122

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

Weld Process: Shielded Metal Arc Weld Process (SMAW)

AWS Chemical Composition Requirements
C = 0.02 max Cu = 0.50 max
Mn = 1.0 max Ni = Remainder
Fe = 2.0 – 6.0 Co = 2.5 max
P = 0.03 max Cr = 20.0 – 22.5
S = 0.015 max Mo = 12.5 – 14.5
Si = 0.20 max W = 2.5 – 3.5
V = 0.35 max Other = 0.50 max

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Application
DURAMAX NA122 (ENiCrMo-10) has a nominal composition (wt.-%) of 56 Ni, 22 Cr, 13 Mo, 4 Fe, 3W. Electrodes of this classification are used for welding nickel chromium-molybdenum alloys, for the welding of the clad side of joints in steel clad with nickel-chromium-molybdenum alloy, to steel and to other nickel-base alloys; and for joining nickel-chromium-molybdenum alloys. Typical specifications for the nickel-chromium-molybdenum base metals are ASTM B 574, B 575, B 619, B 622, and B 626, all of which have UNS Number N06022.
DMNA122 is formulated for welding a wide array of industrial applications including power generation, petroleum and chemical plants, as well as offshore and marine facilities.

Deposited Chemical Composition % (Typical)
C = 0.012 Mn = 0.16 Fe = 2.24
P = 0.003 S = 0.001 Si = 0.19
Cu = 0.05 Ni = 57.34 Co = 0.01
Cr = 22.14 Mo = 14.22 V = 0.03
W = 3.45 TOE = <0.50
Deposited All Weld Metal Properties % (AW) 
Tensile Strength 720 N/mm2
Yield Strength 538 N/mm2
Elongation 38%

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