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Resistance to High-Temperature Corrosion
HAYNES® HR-160® alloy is a
solid-solution-strengthened
nickel-cobalt-chromium-silicon
alloy with outstanding resistance
to various forms of high-temperature
corrosion attack.
HR-160 alloy has excellent
resistance to sulfidation and
chloride attack in both reducing
and oxidizing atmospheres.
The alloy also has exceptionally
good resistance to oxidation,
hot corrosion, carburization,
metal dusting, nitridation, and
corrosion attack by low melting
point compounds such as those
formed by phosphorus, vanadium,
and other impurities. The
alloy is especially suited for
applications in high temperature
corrosive environments generated
by combustion of lowgrade
fuels or processing of
chemical feedstocks with
corrosive contaminants such as
sulfur, chlorine, fluorine, vanadium,
phosphorus, and others.
The alloy is capable of withstanding
temperatures up to
2200°F (1204°C).
Ease of Fabrication
HAYNES HR-160 alloy has
excellent forming and welding
characteristics. It may be
forged or otherwise hot-worked,
providing it is held at 2050°F
(1121°C) for time sufficient to
bring the entire piece to temperature.
As a consequence of
its good ductility, HR-160 alloy
is also readily formed by cold
working. Cold- or hot-worked
parts should be annealed and
rapidly cooled in order to restore
the best balance of properties.
HR-160 alloy can be welded by
a variety of techniques, including
gas tungsten arc (TIG), gas
metal arc (MIG), and resistance
welding.
Heat-Treatment
HR-160 alloy is furnished in the
solution annealed condition,
unless otherwise specified. The
alloy is solution annealed at
2050°F (1121°C) and rapidly
cooled for optimum properties.
Intermediate annealing, if
required during fabrication and
forming operations, can be
performed at temperatures as
low as 1950°F (1066°C).
Available in Practical
Product Forms
HAYNES HR-160 alloy is
available in the form of plate,
sheet, strip, billet, bar, wire,
pipe, and tubing.
Applications
HAYNES HR-160 alloy combines
properties which make it
highly useful for service in
severe high-temperature
corrosive environments. Applications
include a variety of
fabricated components in
municipal, industrial, hazardous,
and nuclear waste incinerators.
It is widely used in recuperators,
heat exchangers and waste
heat recovery systems. HR-160
alloy is also suitable for utility
boilers, sulfur plants, high-temperature
furnaces, kilns,
calciners, resource recovery
units, cement kilns, pulp and
paper recovery boilers, coal
gasification systems, and
fluidized-bed combustion
systems.
Applicable Specifications
The UNS number for HAYNES
HR-160 alloy is N12160.
ASME Vessel Code
HAYNES HR-160 alloy is
covered by ASME Vessel Code
case No. 2162 for Section VIII
Division 1 construction to
1500°F (816°C). |
Nominal Chemical Composition, Weight Percent |
Ni |
Co |
Cr |
Fe |
Si |
Mn |
Ti |
C |
W |
Mo |
Cb |
|
37a |
29 |
28 |
2* |
2.75 |
0.5 |
0.5 |
0.05 |
1* |
1* |
1* |
| aAs Balance *Maximum |
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