HASTELLOY® S RTW™ Filler Metal

Product Description:

HASTELLOY® S RTW filler metal is use for the gas metal arc and gas tungsten arc welding of S alloy. The deposited weld metal has excellent thermal stability, low thermal expansion and excellent oxidation resistance to 2000°F. S weld metal retains its strength and ductility after aging at temperatures of 800°F to 1600°F. The filler metal also is a great candidate for dissimilar joining in cyclic heating applications and long term temperature exposure. The RTW finish on the spooled wire promotes smooth feeding through welding equipment and reduced tip wear contact tips.


AMS 5838      UNS N06635


Nickel: Remainder
Chromium: 14.50-17.00
Molybdenum: 14.00-16.50
Iron: 3.00 max.
Cobalt: 2.00 max.
Manganese: 0.30-1.00
Tungsten: 1.00 max.
Silicone: 0.20-0.75

Aluminum: 0.10-0.50
Copper: 0.35
Lanthanum: 0.01-0.10
Carbon: 0.02 max.
Phosphorus: 0.02 max.
Sulfur: 0.015 max.
Boron: 0.015 max.

Minimum Mechanical Properties:

Tensile (psi)
Elongation (%)

Available Product Forms and Sizes:

Diameter in 0.030 0.031 0.035 0.039 0.045 0.047 0.062 0.078 0.093 0.125* *0.156x 0.187x
Diameter mm 0.76 0.80 0.89 1.00 1.10 1.20 1.60 2.00 2.40 *3.20 *4.00x *4.70x

Filler metals are available in MIG spools, TIG cut lengths, reels, and coils from the above diameters.

*Size not available in MIG spools.

˟Size not available on reels.

Standard TIG straight lengths are available in 36” (914mm) lengths. Other lengths available upon request.