Optimizing Welding Performance with ERNiCrMo-14 (UNS N06686) Filler Metal
Introduction
ERNiCrMo-14 (AWS A5.14 / UNS N06686) is a nickel-chromium-molybdenum welding filler metal designed for superior corrosion resistance and high-strength applications. Compliant with international standards such as ASME II and ASME IX (F-No. 43), this filler metal is ideal for welding UNS N06686 and similar alloys, as well as for overlaying carbon and low-alloy steels. Its optimized chemical composition and physical properties ensure exceptional performance in critical environments.
Key Advantages
Corrosion Resistance
The high content of chromium (19–23%), molybdenum (15–17%), and tungsten (3.0–4.4%) provides outstanding resistance to pitting, crevice corrosion, and oxidizing media.
Suitable for harsh environments, including chemical processing, marine, and oil & gas applications.
Mechanical Strength
Minimum tensile strength of 110,000 psi (1,138 MPa) and elongation of 35% ensure robust and ductile weldments.
Ideal for overlaying carbon steel substrates where mechanical integrity and corrosion resistance are critical.
Versatility
Compatible with Gas Tungsten Arc Welding (GTAW) and Gas Metal Arc Welding (GMAW) processes.
Used for welding UNS N06686, similar alloys (e.g., C-276), and as an overmatching filler for dissimilar metal joints.
Optimized Feedability
The matte finish on spooled wire reduces friction and ensures smooth feeding through welding equipment, minimizing tip wear and downtime.
Chemical Composition (%)
Element | Ni | C | Si | S | P | Mn | Fe | Cr | Mo | Cu | Co | W | Al |
Content | ≥49 | ≤0.1 | ≤0.08 | ≤0.015 | ≤0.02 | ≤1.0 | ≤5.0 | 19–23 | 15–17 | ≤0.50 | ≤0.25 | 3.0–4.4 | ≤0.5 |
Mechanical Properties
Property | Value |
Tensile Strength | ≥110,000 psi (1,138 MPa) |
Elongation | ≥35% |
Product Forms & Sizes
TIG Rods (Straight Lengths): 1.2–3.2 mm
MIG Wires (Spooled): 0.8–1.2 mm
Precision layer winding ensures tangle-free feeding and consistent weld quality.
Applications
Welding UNS N06686 and similar alloys in chemical reactors, heat exchangers, and piping systems.
Corrosion-resistant overlay on carbon and low-alloy steels for extending service life.
Repair and maintenance of components exposed to aggressive media.
Why Choose ERNiCrMo-14?
Global Compliance: Meets AWS A5.14, ASME, and GB/T 15620 SNi6686 specifications.
Reliability: Consistent chemical and mechanical properties ensure repeatable results.
Efficiency: Reduced tip wear and smooth feeding enhance productivity in automated and manual welding processes.
Conclusion
ERNiCrMo-14 (UNS N06686) filler metal offers a optimized solution for welding and overlaying applications demanding corrosion resistance, mechanical strength, and operational efficiency. Its versatility and compliance with international standards make it a top choice for industries where performance and reliability are non-negotiable.