Hastelloy W is a a solid-solution-strengthened alloy that was developed primarily for the welding of dissimilar alloys. It is available as straight cut-length wire for gas tungsten arc welding, layer-wound wire for gas metal arc welding, and coated electrodes for shielded metal arc welding. The properties of dissimilar weld joints made with alloy W are dependent upon the alloys joined, but are generally acceptable for a wide variety of combinations. It has also been produced in the form of sheet and plate for structural applications up to 760 °C (1400 °F).

1. Chemical Composition Requirements

The Chemical Composition of Hastelloy W, %
Ni	Balance≤63.0
Cr	≤5.0
Fe	≤6.0
Co	≤2.5
Mo	≤24.0
C	≤0.12
Mn	≤1.0
Si	≤1.0

2. Mechanical Properties of Hastelloy W

Tensile Strength, min.		Yield Strength, min.		Elongation, min.
Mpa	ksi	Mpa	ksi	%
850	123	370	53.5	55

3. Physical Properties

Density		Melting Range
g/cm3	lb/in3	°C	°F
9.00	0.325	1290-1375	2350-2510

4. Product Forms and Standards

Hastelloy W materials can be supplied in a variety of product forms: wires (manufactured to AMS 5786, AWS A5.14 & ASME SFA 5.14); coated electrodes (manufactured to AMS 5787, AWS A5.11 & ASME SFA 5.11); bars/rods, rings & forgings (manufactured to AMS 5755).

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