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C-276 Nickel Alloy Welding Wire

This filler wire (ERNiCrMo-4) is designed for GTAW (gas tungsten arc welding) and GMAW (gas metal arc welding) applications. It is commonly used for welding Inconel C-276 and other nickel-chromium-molybdenum alloys, ensuring strong and corrosion-resistant joints. Thanks to its high molybdenum content, it offers exceptional resistance to stress corrosion cracking, pitting, and crevice corrosion, making it an excellent choice for demanding industrial environments.

Common Names: Oxford Alloy® C-276, FM C-276, Techalloy 276

International Standards: AWS A5.14, ERNiCrMo-4 / ASME II, SFA-5.14, UNS N10276, Werkstoff Nr. 2.4886, ISO SNi6276, European NiCrMo16Fe6W4

Chemical composition (%)
C Si Mn S P Ni Co
≤0.02 ≤0.2 ≤2.0 ≤0.01 ≤0.01 Rest ≤2.5
W V Fe Cu Cr Mo others
3.0-4.5 ≤0.35 4.0-7.0 ≤0.5 14.5-16.5 15-17 ＜0.5
Welding parameters
Process Diameter Voltage Amperage Gas
TIG .035” (0.9mm)
.045” (1.2mm)
1/16” (1.6mm)
3/32” (2.4mm)
1/8” (3.2mm)		 12-15
13-16
14-18
15-20
15-20		 60-90
80-110
90-130
120-175
150-220		 100% Argon
100% Argon
100% Argon
100% Argon
100% Argon
MIG .035” (0.9mm)
.045” (1.2mm)
1/16” (1.6mm)		 26-29
28-32
29-33		 150-190
180-220
200-250		 75% Argon + 25% Helium
75% Argon + 25% Helium
75% Argon + 25% Helium
SAW 3/32” (2.4mm)
1/8” (3.2mm)
5/32” (4.0mm)		 28-30
29-32
30-33		 275-350
350-450
400-550		 Can be used with appropriate flux
Can be used with appropriate flux
Can be used with appropriate flux
Mechanical properties
Tensile strength 114,500 PSI 790 MPA
Yield strength 85,000 PSI 590MPA
Elongation 27%  
Applications
  • The high molybdenum content enhances resistance to stress corrosion cracking, pitting, and crevice corrosion, making this filler wire ideal for cladding applications.
  • Commonly used in the groove welding of 9% nickel steel for LNG storage tank fabrication.
  • Suitable for welding materials with similar chemical compositions, as well as dissimilar joints between nickel-based alloys, steel, and stainless steel.
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