ERNiCrFe-2 welding wire is a high-performance product specifically designed for Gas Tungsten Arc Welding (GTAW) of advanced nickel-chromium-iron alloys such as Inconel 718, 706, and X-750. Manufactured to meet the rigorous requirements of the Chinese specification GB/T 15620 SNi7718 and international standards AWS A5.14, ERNiCr-3, ASME II, SFA-5.14, ERNiCr-3, and AWS 5836, this welding wire is an essential tool for professionals demanding consistent and reliable weld quality.

Applications

ERNiCrFe-2 is expertly engineered for welding Inconel alloys, particularly Inconel 718, 706, and X-750. These alloys are commonly used in high-temperature environments such as aerospace, power generation, and other critical industrial applications. The wire’s exceptional properties ensure robust and durable welds that can withstand the demanding conditions these materials are exposed to.

Chemical Composition

The effectiveness of ERNiCrFe-2 in demanding applications is largely due to its precisely balanced chemical composition, which enhances its resistance to heat, oxidation, and corrosion. The main chemical components and their respective percentages are as follows:

Nickel (Ni): ≥67%

Chromium (Cr): 18-22%

Iron (Fe): ≤3.0%

Niobium (Nb): 2.0-3.0%

Titanium (Ti): ≤0.75%

Carbon (C): ≤0.05%

Manganese (Mn): 2.5-3.5%

Silicon (Si): ≤0.5%

Sulfur (S): ≤0.015%

Phosphorus (P): ≤0.015%

Copper (Cu): ≤0.50%

This careful formulation ensures that ERNiCrFe-2 provides consistent performance and reliability in welding operations, making it a preferred choice for welding high-stress, high-temperature materials.

Mechanical Properties

ERNiCrFe-2 welding wire delivers outstanding mechanical properties, particularly in terms of tensile strength. With a minimum tensile strength of 165,000 psi (1138 MPa), it ensures that the welded joints are exceptionally strong and capable of withstanding significant stress, making it ideal for critical applications where reliability is paramount.

Product Forms and Specifications

ERNiCrFe-2 is available in multiple forms to suit various welding processes and preferences:

Straight Rods (TIG): Available in diameters ranging from 1.2mm to 3.2mm, these rods are ideal for Gas Tungsten Arc Welding (GTAW), offering precision and control in the welding process.

Spooled Wire (MIG): Offered in diameters from 0.8mm to 1.2mm, this spooled wire is designed for use in Gas Metal Arc Welding (GMAW), ensuring smooth and consistent feeding for uninterrupted welding operations.

Both forms are manufactured with precision layer winding for the spooled wire, ensuring optimal handling and performance during use.

Conclusion

ERNiCrFe-2 welding wire is an advanced, high-quality product designed to meet the stringent demands of welding Inconel alloys in challenging environments. Its excellent chemical composition, superior mechanical properties, and availability in various product forms make it an ideal solution for industries where reliability and performance are critical. Whether for aerospace, power generation, or other high-stress applications, ERNiCrFe-2 ensures strong, durable welds that meet the highest industry standards.