ENiCrMo-4 DMHASC276 CTD

Class: ENiCrMo-4
AWS: A5.11

DURAMAX HASC276 CTD

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 = 4.0 – 7.0 Co = 2.5 max
P = 0.04 max Cr = 14.5 – 16.5
S = 0.03 max Mo = 15.0 – 17.0
Si = 0.20 max W = 3.0 – 4.5
V = 0.35 max  TOE = 0.50 max

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Application

DURAMAX HASC276 CTD (ENiCrMo-4) has a nominal composition (wt.-%) of 57 Ni, 16 Mo, 15.5 Cr, 5.5 Fe, 4 W, low C. Electrodes of this classification are used for welding low carbon nickel-chromium- molybdenum alloy, for welding the clad side of joints in steel clad with low carbon nickel-chromium-molybdenum alloy, and for welding low carbon nickel-chromium-molybdenum alloy to steel and to other nickel-base 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 N10276.

DMHASC276 CTD offers exceptional resistance to pitting and crevice corrosion. This electrode is formulated to work well in harsh environments as well as pipelines, pressure vessels, chemical processing plants, and oil and gas facilities.

Deposited Chemcial Composition % (Typical)
C = 0.005 Mn = 0.22 Fe = 5.13
P = 0.007 S = 0.003 Si = 0.10
Cu = 0.03 Ni = 59.51 Co = 0.044
Cr = 16.09 Mo = 15.41 V = 0.04
W = 3.37 TOE = <0.50
Deposited All Weld Metal Properties % (AW)
Tensile Strength 720 N/mm2
Yield Strength 545 N/mm2
Elongation 40%

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 – 26 170 – 190 Not recommended