|
Grade
|
Sumitomo
designation
|
Basic
composition (%)
|
Specification
|
Characteristics
|
Example
of application
|
|
UNS
|
ASTM
|
Remarks
|
|
Mo
free
|
HR7TA
|
20Cr-32Ni-Ti-Al
|
N08800
|
B163
B407
|
Alloy
800
|
HR7TA has excellent resistance to
oxidation and carburization in high temperature
environments. It also resists corrosion
in a wide range of corrosion environments. In
addition, it has good metallurgical stability
during high temperature exposure.
|
heat exchanger tubing, process piping, nuclear
power steam generator tubing
|
|
HR7H
|
20Cr-32Ni-Ti-Al
|
N08810
(N08811)
|
B163
B407
|
Alloy
800H
(Alloy
800HT)
|
HR7H is similar to HR7TA, but with
higher creep rupture strength due to optimum
C, Ti and Al contents and heat treatment.
|
superheater/reheater tubing in chemical
and power plants, process piping, furnace
tubing
|
|
Low
Ni
|
HR3ELM
|
25Cr-22Ni-2Mo
|
S31050
|
A213
A312
|
25-22-2
|
HR3ELM has excellent corrosion resistance
in urea-carbanate solutions due to extremely
low C with 25%Cr, and balanced Ni with Mo
lead fully austenitic structure.
|
Urea stripper, condenser, decomposer and
reactor
|
|
HR8
|
22Cr-26Ni-5Mo-Ti
|
N08320
|
B622
|
NAR-A
|
HR8 is one of the most excellent alloys
used in corrosive environments. High Cr & Mo
offers better resistance to a wide range
of corrosive conditions. Hereafter, it
maycanbe expected
to be satisfactory for selection for anti-pollution
equipment in severe environments.
|
heat exchanger tubing, marine engineering,
acid and alkaline plant and equipment, pollution
control equipment
|
|
HR8C
|
20Cr-25Ni-4.5Mo-Cu
|
N08904
|
A269
B677
|
Alloy
904L
|
HR8C is a standard corrosion resistant alloy which has
been applied in most chemical industries. Alloying
increased Mo to 4% with 1%Cu addition results
in excellent corrosion resistance to acid,
especially in reducing conditions.
|
chemical processing, pollution control equipment,
sea water freshening equipment
|
|
HR21
|
27Cr-31Ni-3.5Mo-Cu
|
N08028
|
B668
|
Alloy
28
|
HR21 has high Cr with balanced Ni,
Mo and Cu to improve corrosion resistance
to many kinds of chemicals with detrimental
contamination. In addition, it is applied
in marine environments due to its superior
resistance to pitting/crevice and chloride
stress corrosion cracking, even if hydrogen
sulfide is present.
|
marine engineering, pollution control equipment
|
|
6%Mo
|
HR8N
|
20Cr-25Ni-6Mo-Cu-N
|
N08925
(N08926)
|
B677
(A269,B677)
|
NAR-AC3
|
HR8N is characterized as a super
austenitic stainless steel with added high
content of nitrogen and 6%Mo. It has an
exceptional level of resistance to chloride
pitting and crevice corrosion. It also has
high strength with good ductility due to
balanced Nitrogen, Molybdenum and Nickel
content.
|
sea water heat exchanger, acid plant and
equipment, salt manufacture equipment,
pulp and paper production plant
|
|
HR254
|
20Cr-18Ni-6Mo-Cu-N
|
S31254
|
A269
A312
|
Alloy
254SMO
|
HR254 is a 6%Mo-N super austenitic
stainless steel, which has high strength
with excellent resistance to localized corrosion
in sea water environments, Sumitomo Metals
supplies seamless pipe and tubes of HR254,
equivalent to 254SMO under license from AVESTA
JERNVERKS AB (Sweden)
|
sea water heat exchanger, food processing,
marine engineering
|
|
High
Ni
|
HR10
|
20Cr-35Ni-2Mo-3Cu-Nb
|
N08020
|
B729
|
Alloy
20Cb-3
|
HR10 has 3%Cu with 35%Ni results
in superior corrosion resistance to sulfuric
acid. It has higher Nickel than Type316 which
improves resistance to chloride stress corrosion
cracking. In addition, stable corrosion resistance
of welds is expected as a result of high
Nb/C ratio.
|
desalination equipment, nuclear fuel reprocessing,
acid plant and equipment
|
|
HR11
|
22Cr-42Ni-3Mo-2Cu-Ti
|
N08825
|
B163
B423
|
Alloy
825
|
HR11 offers optimum resistance to
environments where reducing and oxidizing
conditions are encountered in process
streams. Alloying Ni content to 40% exhibits
proven resistance to chloride stress corrosion
cracking. It is also resistant to intergranular
attack caused by welding, and to pitting/crevice
corrosion caused by chloride and hostile
acidic gas conditions.
|
acid plant and equipment, oil and gas well
piping, chemical processing, pollution control
equipment
|
|
Ni
base
|
HR13
|
25Cr-50Ni-6Mo-Cu-Ti
|
N06975
|
B622
|
NAR-B
|
HR13 is a 25%Cr and 6%Mo with 50%Ni
based high performance alloy, which can be
applied satisfactorily in environments requiring
high grade corrosion resistance. It has exceptional
resistance to a wide variety of chemical
process environments, including strong oxidizer,
hot contaminated organic and inorganic acid
solution and hot concentrated brine solutions.
|
acid plant and equipment, sea water heat
exchanger, marine engineering, pollution
control equipment, chemical processing
|
|
HN60
|
30Cr-60Ni
|
N06690
|
B163
B167
|
Alloy
690
|
HN60 is a high Ni, Cr alloy with
excellent resistance in a wide variety of
environments. It also has high strength
and good metallurgical stability in high
temperature environments.
|
nuclear power steam generator tubing, pickling
plant and equipment, nuclear fuel reprocessing
|
|
HN62
|
21Cr-62Ni-8.5Mo-3.5Nb-Ti
|
N06625
|
B444
|
Alloy
625
|
HN62 is a high Mo, Nb stabilized
Ni base super alloy with excellent resistance
to localized corrosion, high temperature
oxidation resistance and high strength. It
resists stress corrosion cracking due to
62% Nickel and has outstanding resistance
to pitting/ crevice corrosion owing to 9%
Molybdenum.
|
sea water heat exchanger, marine engineering,
pollution control equipment, waste treatment,
chemical processing
|
|
HN75
|
16Cr-75Ni
|
N06600
|
B163
B167
|
Alloy
600
|
HN75 is a Ni base alloy with good
oxidation resistance at high temperature
and resistance to stress corrosion cracking
in the presence of chloride, corrosion by
high purity water.
|
nuclear engineering, nuclear power steam
generator tubing, chemical and food processing
|
|
HN6A
|
23Cr-60Ni-1.4Al
|
N06601
|
B163
B167
|
Alloy
601
|
HN6A is a high Ni, Cr alloy with
a low amounts of Al. It has resistance to
oxidizing and carburizing environments and
other corrosion at high temperature. It
also has high strength in high temperature
environments.
|
industrial furnace parts, heat treatment
equipment, petrochemical and gas turbine
components
|
|
KT276
|
15.5Cr-58Ni-16Mo-4W
|
N10276
|
B622
|
Alloy
C276
|
KT276 is an extra low Carbon-Nickel
based super alloy with high Molybdenum. It
has superior corrosion resistance to a wide
variety of environments, especially reducing
media. It is widely used in hostile acidic
gas processing and production.
|
pulp and paper production plant, chemical
processing, pollution control equipment
|
|
KT22
|
21Cr-57Ni-13Mo-3W
|
N06022
|
B622
|
Alloy
C22
|
KT22 has superior corrosion resistance
to a wide variety of environments, especially
in oxidizing corrosives. Also, it resists
localized corrosion and stress corrosion
cracking.
|
pulp and paper production plant, chemical
processing, pollution control equipment
|
|
Ni
|
Ni
|
Ni
|
N02200
N02201
|
B161
B163
|
－
|
NI has good mechanical properties
and resistance to a variety of corrosive
media.
|
process piping food and alkali processing
|
