Hangbo Alloy Group
Shanghai · Est. 2012
A practical guide to Inconel 625 (ERNiCrMo-3) welding wire: chemistry, applications, and joining best practices for corrosion-resistant fabrication.
Inconel 625 welding wire (filler metal ERNiCrMo-3) is the workhorse consumable for joining nickel-chromium-molybdenum alloys and for overlaying carbon steel exposed to aggressive corrosion. This guide covers when to specify it and how to get reliable welds.
With roughly 21% chromium, 9% molybdenum and 3.5% niobium, 625 wire delivers oxidation resistance to about 980 °C and strong resistance to pitting, crevice corrosion and chloride stress-corrosion cracking.
Use clean, low-heat-input parameters and keep interpass temperature controlled. Post-weld heat treatment is usually not required for corrosion service.
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 58.0 min |
| Chromium (Cr) | 20.0 – 23.0 |
| Molybdenum (Mo) | 8.0 – 10.0 |
| Niobium + Tantalum (Nb+Ta) | 3.15 – 4.15 |
| Iron (Fe) | 5.0 max |
| Carbon (C) | 0.10 max |
| Property | Typical Value |
|---|---|
| Tensile Strength | 790 MPa (114 ksi) min |
| Yield Strength (0.2%) | 470 MPa (68 ksi) min |
| Elongation | 30% min |
| Service Temperature | up to 980°C (1800°F) |
Values are typical for as-welded Inconel 625 (ERNiCrMo-3) deposited metal per AWS A5.14. Actual results depend on welding process, heat input and shielding gas.
Follow these practical guidelines to obtain sound, corrosion-resistant welds with this filler metal, supplied by Hangbo as ERNiCrMo-3 welding wire and used across seamless tubes and other nickel-alloy product forms:
The filler metal is UNS N06625, specified as ERNiCrMo-3 under AWS A5.14.
Yes. It is widely used for corrosion-resistant overlay (cladding) on carbon and low-alloy steel in chemical and marine service.
As a dedicated nickel alloy manufacturer serving chemical processing, marine sectors, Hangbo Alloy Group supplies the grades discussed here across all standard product forms with full ASTM/ASME documentation and EN 10204 3.1 certification. Our material is specified for applications where corrosion resistance, high-temperature strength, and traceable quality are non-negotiable. See our production & testing facilities for more on how every heat is verified. Contact us for a quote on this grade in your required product form.