MW-625 (ERNiCrMo-3) Nickel Alloy Welding Wire

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

Features
Technical Data

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.