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ROLLED ALLOYS
Heat and Corrosion Resistant Alloy
Specialists
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We are suppliers of high performance wrought
alloys for heat and corrosion resistant service.
This brochure describes those alloys specially
suited for use at elevated temperatures. They are
summarized in the table below. In addition, we
describe briefly on this page some of our corrosion
resistant alloys. We have a separate brochure on
these materials, and would be happy to supply one
to you.
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Heat Resistant
Alloys
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Nominal Chemical Composition
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Description
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ALLOY
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Ni
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Cr
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Fe
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Si
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Other
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RA333®**
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45
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25
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18
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1.0
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Mo:3
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Co:3
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W:3
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C:.05
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A nickel base superalloy with excellent
carburization, oxidation, and hot corrosion
resistance. It has high creep-rupture strength with
exceptional ability to withstand repeated thermal
shock.
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RA330®**
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35
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19
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43
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1.25
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C:.05
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The workhorse of the austenitic heat resistant
alloys. Good strength, carburization and oxidation
resistance to 2200 °F. RA330HC has high carbon
for best hot shear strength and wear resistance for
pin stock.
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RA85H®**
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14.5
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18.5
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61
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3.5
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C:.20
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Al:1.0
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Mn:.6
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A new alloy development with outstanding
resistance to carburization and thermal fatigue.
High strength, good resistance to reducing
sulfidizing atmospheres.
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RA353MA®***
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35
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25
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37
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1.5
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Ce:.05
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C:.05
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N:.15
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A strong, micro-alloyed austenitic with
oxidation resistance through 2300 °F.
Carburization, oxidizing hot corrosion resistance.
The upgrade from RA330 above 1800 °F.
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RA253®***
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11
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21
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65
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1.7
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Ce:.04
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N:.17
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C:.08
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Mn:.6
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An advanced micro-alloyed austenitic heat
resistant alloy. High creep-repture stength and
outstanding oxidation resistance through 2000
°F.
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RA800H/AT
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31
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21
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45
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.4
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Al:.4
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Ti:.6
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High strength austenitic heat resistant alloy
for ASME code applications to 1650 °F.
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RA321
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9.3
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17.3
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70
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0.7
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C:.04
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Ti:.4
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Titanium stabilized austenitic stainless steel
commonly used for service in the 1000-1600 °F
temperature range.
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RA309
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13
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23
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62
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0.8
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C:.05
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Mn:1.6
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Austenitic, oxidation resistant to 1900 °F,
moderate strength. Useful in reducing sulfidizing
atmospheres.
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RA310
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20
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25
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52
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0.5
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C:.05
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Mn:1.6
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Austenitic heat resistant grade with higher
chromium and nickel for oxidation resistance beyond
2000 °F. Good sulfidation and hot corrosion
resistance.
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RA446
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-
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25
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73
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0.5
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C:.05
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N:.1
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Mn:.7
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High chromium ferritic alloy with excellent
oxidation and sulfidation resistance. Low
strength.
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RA601
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61.5
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22.5
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14
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0.2
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C:.05
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Al:1.4
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Mn:.3
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A nickel base alloy with high chromium and an
aluminum addition. Outstanding oxidation resistance
to 2200 °F, good strength and carburization
resistance.
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RA600
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76
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15.5
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8
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0.2
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C:.08
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Mn:.3
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A nickel-chromium alloy with good carburization
and oxidation resistance through 2000 °F.
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Corrosion Resistant
Alloys
CARPENTER 20Cb-3®Ý stainless
is the alloy designed specifically to withstand
sulfuric acid. Practical immunity to chloride
stress corrosion cracking. Stabilized to prevent
intergranular corrosion as welded.
RA625 a high strength 9% molybdenum
nickel alloy with excellent resistance to hot
seawater, scrubber environments and reducing
acids.
AL-6XN®* stainless is a high
molybdenum super-austenitic with outstanding
resistance to chloride pitting, crevice corrosion
and stress corrosion cracking.
RA2205 austenitic-ferritic stainless
steel resistant to chloride stress corrosion
cracking. High strength, very good pitting and
general corrosion resistance.
RA825 nickel alloy is resistant to
sulfuric acid and to stress corrosion cracking from
chlorides and from polythronic acid. Disclaimer
Clause: The data and information in this printed
matter are believed to be reliable. However, this
material is not intended as a substitute for
competent professional engineering assistance which
is a requisite to any specific application. Rolled
Alloys makes no warranty and assumes no legal
liability or responsibility for results to be
obtained in any particular situation, and shall not
be liable for any direct, special, or consequential
damages. This material is subject to revision
without prior notice.
Ý Registered trademark of carpenter
Technology Corporation.
* Registered trademark of Allegheny Ludlum Steel
Corporation.
** Registered trademark of Rolled Alloys,
Inc.
*** Registered trademark ot Avesta Shetlield
AB.
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