ERNiCrMo-3 Nickel Alloy Welding Wire
1. Chemical Composition
ERNiCrMo-3 (AWS A5.14) stands as a pinnacle of metallurgical precision. This nickel-chromium-molybdenum alloy is crafted with meticulous elemental control, ensuring superior performance across challenging environments:
- Primary Elements: Nickel (Ni: 58-62%), Chromium (Cr: 20-23%), Molybdenum (Mo: 8-10%), Niobium (Nb: 3.15-4.15%)
- Impurities: With minimized iron (Fe ≤1.0%), sulfur (S ≤0.02%), and phosphorus (P ≤0.015%), the composition significantly reduces cracking risks, ensuring weld integrity.
2. Mechanical Properties
- Tensile Strength: ≥760 MPa, delivering robust welds with remarkable durability.
- Yield Strength: ≥420 MPa, guaranteeing the resilience needed for demanding applications.
- Elongation: ≥27%, offering flexibility and adaptability in diverse welding situations.
- Impact Toughness: Exhibits high resistance to fatigue and stress corrosion cracking, making it ideal for conditions ranging from cryogenic to high-temperature scenarios.
3. Physical Properties
- Density: 8.4 g/cm³, providing a consistent and reliable material structure.
- Melting Range: 1290-1350°C, ensuring adaptability for varied thermal processing requirements.
- Structure: Features a face-centered cubic lattice, transitioning to the stable Ni3(Nb,Ti) phases after a precise heat treatment around ~650°C.
4. Key Features
- Corrosion Resistance: Offers extraordinary resistance against pitting, crevice corrosion, and stress corrosion cracking, especially in chloride, acidic, and marine environments.
- High-Temperature Stability: Retains strength and exhibits outstanding oxidation resistance up to 1800°F (982°C), ideal for extreme conditions.
- Versatility: Perfectly suited for welding dissimilar metals, such as carbon steel to nickel alloys, as well as surface cladding applications.
5. Welding Process Compatibility
- Methods: Seamlessly compatible with TIG (GTAW), MIG (GMAW), submerged arc (SAW), and plasma arc welding techniques.
- Shielding Gas: Uses argon or argon-helium mixtures for TIG/MIG processes; INCOFLUX 7 flux is recommended for SAW, enhancing weld quality.
- Wire Diameters: Available in 0.8-3.2 mm, in both spooled and straight rod forms, catering to diverse welding needs.
6. Applications
- Industries: Widely utilized in aerospace (engine components, exhaust systems), chemical processing (reactors, pipelines), marine (valves, seawater systems), and oil/gas (wellhead equipment), showcasing its versatility.
- Materials Welded: Efficiently welds materials like INCONEL 625, INCOLOY 825, 20alloy, 9% Ni steel, and various dissimilar combinations including nickel alloys to stainless steel.
7. Standards & Certifications
- AWS/ASME: Rigorous compliance with AWS A5.14, ASME SFA-5.14, and UNS N06625, upholding the highest industry standards.
- Certifications: Proudly certified by ABS, NADCAP, and ISO 18274 for critical industry applications, ensuring reliability and trust.
8. Handling & Storage
- Moisture Control: Ensure your ERNiCrMo-3 Filler Wire is preserved in optimal condition by storing it in a dry environment. The copper-coated variants not only enhance conductivity but also offer superior protection against the elements.
- Pre-Weld Prep: Achieve flawless welding results by meticulously cleaning all surfaces of any oil, rust, and moisture. Employ a low heat input strategy to prevent embrittlement and maintain the integrity of your work.
9. Packaging & Availability
- Packaging: Available in convenient spools ranging from 5 to 15 kg, as well as straight rods, to suit varying requirements and ensure ease of use.
- Lead Time: With an efficient production process, expect your order to typically ship within 3 to 15 days, contingent on the quantity demanded.
Summary: The ERNiCrMo-3 is not just any welding wire; it is a superior choice engineered for challenging environments. It boasts exceptional mechanical properties, unparalleled corrosion resistance, and versatile adaptability across a multitude of industries, ensuring it meets the highest standards of performance and reliability.





Product Description
AWS A5.4 |
ERNi-1 |
ERNiCu-7 |
ERNiCr-3 |
ERNiCrFe-5 |
ERNiCrMo-3 |
ERNiCrMo-4 |
ERNiCrMo-7 |
TS(N/mm2) |
460 |
541 |
671 |
560 |
790 |
729 |
780 |
EL(%) |
30 |
39 |
39 |
30 |
43 |
33 |
35 |
C |
0.02 |
0.02 |
0.03 |
0.03 |
0.0037 |
0.002 |
0.05 |
Mn |
0.3 |
1.7 |
3.05 |
1 |
0.03 |
0.12 |
0.6 |
Si |
0.16 |
0.44 |
0.37 |
0.04 |
0.029 |
0.07 |
0.02 |
P |
0.0012 |
0.007 |
/ |
0.004 |
0.003 |
0.003 |
0.003 |
Ti |
2.3 |
/ |
0.01 |
/ |
0.088 |
/ |
/ |
S |
0.005 |
0.008 |
/ |
0.002 |
0.001 |
0.0015 |
|
Cr |
/ |
/ |
19.86 |
15.7 |
21.95 |
15.9 |
16.7 |
Ni |
96.5 |
65.68 |
72.8 |
75.06 |
64.65 |
REM |
REM |
Cu |
/ |
REM |
0.06 |
0.03 |
0.009 |
0.008 |
/ |
Mo |
/ |
/ |
/ |
0.03 |
9.04 |
15.9 |
15.8 |
Nb |
/ |
/ |
2.4 |
2.3 |
3.61 |
/ |
/ |
V |
/ |
/ |
/ |
/ |
/ |
0.01 |
/ |
Fe |
/ |
0.7 |
0.23 |
7.9 |
0.19 |
4.12 |
2.2 |