Product Overview
MasterWeld MW-625 is a nickel-chromium-molybdenum alloy filler metal designed for welding nickel-chromium-molybdenum alloys to themselves, to steels and to other nickel-base alloys.
MW-625 is also suitable for cladding steel with nickel-chromium-molybdenum weld metal, welding the clad side of steel joints and joining nickel alloys where micro-fissuring may be a concern. It is suitable for applications ranging from cryogenic temperatures up to approximately 540°C.
- Product Name: MasterWeld MW-625
- Classification:
- ASME SFA A5.14: ERNiCrMo-3
- EN ISO 18274: Ni 6625 - NiCr22Mo9Nb
- BS 2901: Pt 5 NA 43
- Werkstoff-Nr.: 2.4831
- Wire Type: Nickel Alloy Filler Metal
- Welding Processes: MIG (GMAW), TIG (GTAW), SAW
Typical Chemical Composition (wt%)
| Element |
Content (%) |
| Carbon (C) |
0.10 max |
| Manganese (Mn) |
0.50 max |
| Iron (Fe) |
5.00 max |
| Phosphorus (P) |
0.015 max |
| Sulphur (S) |
0.015 max |
| Silicon (Si) |
0.50 max |
| Copper (Cu) |
0.50 max |
| Nickel (Ni) |
60.00 min |
| Cobalt (Co) |
1.00 max |
| Aluminium (Al) |
0.40 max |
| Titanium (Ti) |
0.40 max |
| Chromium (Cr) |
20.00 - 23.00 |
| Niobium + Tantalum (Nb+Ta) |
3.15 - 4.15 |
| Molybdenum (Mo) |
8.00 - 10.00 |
Values shown are for reference only.
Mechanical Properties
| Property |
Value |
| Tensile Strength (Rm) |
≥ 760 N/mm² |
| Yield Strength (Rp0.2) |
≥ 415 N/mm² |
| Elongation |
≥ 35% |
| Charpy-V Impact (R.T.) |
≥ 100 J |
Mechanical property values are for reference only.
Key Applications
- Welding nickel-chromium-molybdenum alloys
- Cladding steel with nickel-chromium-molybdenum weld metal
- Welding clad steel joints
- Chemical process and petrochemical applications
- Marine engineering
- Pollution control equipment
Key Features
- Suitable for joining nickel alloys where micro-fissuring may be problematic
- Suitable for nickel alloys, steels and dissimilar joints
- Suitable for cryogenic service up to approximately 540°C
- Suitable for high-grade plant and engineering applications
- Compatible with Inconel 601, Incoloy 800, Alloy 625, Alloy 825 and Alloy 926
Packaging Options
| Welding Process |
Product Type |
Diameter |
Packaging Type |
Weight |
Length |
| MIG (GMAW) |
Filler Wire |
0.80 - 1.20mm |
BS300 / D300 Spools |
15kg |
N/A |
| TIG (GTAW) |
Filler Rod |
1.60 - 4.00mm |
Cardboard Boxes / Tubes |
5kg |
1000mm |
| SAW |
Filler Wire |
1.60 - 4.00mm |
Basket Rims B450 |
25kg |
N/A |
Other sizes and packaging types may be available upon request.
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MW-625 (ERNiCrMo-3) Nickel Alloy Welding Wire
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