Strong and Oxidation
Resistance
HASTELLOY® X alloy is a
nickel-chromium-iron-molybdenum
alloy that possesses an
exceptional combination of
oxidation resistance,
fabricability and high-temperature
strength. It has also been
found to be exceptionally
resistant to stress-corrosion
cracking in petrochemical
applications. X alloy exhibits
good ductility after prolonged
exposure at temperatures of
1200, 1400, 1600°F (650, 760
and 870°C) for 16,000 hours.
Easily Fabricated
HASTELLOY X alloy has
excellent forming and welding
characteristics. It can be forged
and, because of its good
ductility, can be cold worked. X
alloy can be welded by both
manual and automatic methods
including shielded metal arc
(covered electrodes), gas
tungsten arc (TIG) and gas
metal arc (MIG). The alloy can
also be resistance welded.
ASME Boiler and Pressure
Vessel Code
HASTELLOY X alloy plate,
sheet, strip, bar, tubing and
pipe are covered by ASME
specifications SB-435, SB-572,
SB-619, SB-622 and SB-626
under UNS Number N06002.
Heat-Treatment
Wrought forms of HASTELLOY
X alloy are furnished in the
solution heat-treated condition
unless otherwise specified. X
alloy is solution heat-treated at
2150°F (1177°C) and rapid
cooled. Bright annealed
products are cooled in hydrogen.
Available in Convenient
Forms
HASTELLOY X alloy is available
in the form of plate, sheet, strip,
billet, bar, wire, covered electrodes,
pipe and tubing.
Useful for Aircraft, Furnace
and Chemical
Process Components
X alloy has wide use in gas
turbine engines for combustion zone components such as
transition ducts, combustor
cans, spray bars and flame
holders as well as in afterburners,
tailpipes and cabin heaters.
It is recommended for use in
industrial furnace applications
because it has unusual resistant
to oxidizing, reducing and
neutral atmospheres. Furnace
rolls of this alloy were still in
good condition after operating
for 8,700 hours at 2150°F
(1177°C). HASTELLOY X alloy
is also used in the chemical
process industry for retorts,
muffles, catalyst support grids,
furnace baffles, tubing for
pyrolysis operations and flash
drier components.
Specifications
For information on specifications
to which this alloy can be
ordered, please contact one of
the locations shown on the back
cover of this brochure and ask
for bulletin H-1034.
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