Solid wire – wires for TIG welding of nickel base alloys and dissimilar joints between nickel alloys, ferritic and austenitic stainless steels.
Applications
These weld metals have no directly equivalent parent material, although the composition is related to Inconel™ 600. Mn and Nb are added to give high resistance to hot cracking, tolerance to dilution by many combinations of nickel-base and ferrous alloys, with stable properties over a wide range of service temperatures from –269°C to above 900°C. Applications include heat-resisting nickel-base alloys themselves for use in furnace equipment up to about 900°C. Other applications include Mixed welds between most nickel-base alloys, including Monel 400 and stainless, low alloy or CMn steels without the need to preheat. Transition welds between creep-resisting ferritic and austenitic steels, such as 2CrMo and 316H for long-term service at elevated temperatures in petrochemical and power generation plants. Low-temperature applications such as 3% or 5% Ni steels are used for cryogenic vessels and pipework in service at or below –100°C. Stress relief may be carried out if required.
Specifications
AWS A5.14: ERNiCr-3
BS EN ISO 18274: SNi6082
BS 2901: Pt2 22.8.3S92
DIN 1736 (Werkstoff No): SG-NiCr20Nb (2.4806)
UNS: N06082