LOW TEMPERATURE
PROPERTIES OF A L C O A
ALLOY
5154-0
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Alcoa Aluminum actually increases in strength with no loss in ductility as tempera tures drop to minus 320°F and below. Alloy 5154-0, for example, improves 5 0 % in tensile strength, over 13% m yield strength and approximately 6 0 % in elongation.
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Lib* « PRODUCT I EVAPORATOR! Photograph shows installation of Alcoa Aluminum equipment and piping in oxygen plant detailed in flow diagram. Harp-type heat exchangers (left) are dip-brazed assemblies with thousands of fins for best heat transfer.
1 HIGH AIR-OXYGEN REVERSING EXCHANGER
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SEPARATOR
FILTER
RICH A I R NITROGEN EXCHANGER!
OXYGEN HEATER
AIR COOLER
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AIR
EXPANDER IMPELLER
Diagram of first successful low pressure tonnage oxygen plant . . . designed t o produce 175 tons of 9 5 % oxygen per d a y for the manufacture of oxygenated chemicals. All of the process piping and most of the equipment are Alcoa Aluminum. VOL. 5 0 , N O . 9
·
SEPTEMBER 1958
9 7A
No embrittlement! Lowest cost! ASME Code approved! In the subzero operating r a n g e . . . Specify Alcoa Aluminum equipment and piping The flow chart details a tonnage oxygen plant now in actual operation where process temperatures average below minus 300° F . Notice that virtually all of the equipment and process piping are ALCOA® Aluminum. There's a good reason: aluminum is the lowest cost metal able t o perform satisfactorily at low temperatures. At subzero temperatures, A S M E code approved aluminum alloys suitable for welded construction display improved yield a n d tensile strengths with n o reduction in ductility or resistance t o shock loading (see graphs). There is n o embrittlement! And in these operating temperature ranges, aluminum offers other valuable benefits . . . light weight
"ALCOA THEATRE" Exciting Adventure TÎ-Sf ALTERNATE MONDAY EVENINGS
. . . excellent resistance to corrosion . . . great strength in alloys . . . high thermal conductivity . . . nonmagnetic, nonsparking characteristics . . . nontoxicity . . . a n d excellent reflectivity. It is highly workable and lends itself readily t o a variety of welding o r brazing techniques for easy fabrication. When you are looking for a low cost answer t o the many problems of satisfactory equipment a n d piping performance in low temperature operations, it will pay you to specify Alcoa Aluminum. ALCOA engineers have worked with aluminum in t h e process industries for over 30 years. Use their accumulated knowledge t o help you find satisfactory answers t o your process equipment problems. Consult t h e nearby ALCOA sales office listed in the Yellow Pages of your telephone directory . . . o r outline your equipment requirements in a letter t o ALUMINUM COMPANY OF
AMERICA, 907-J, Alcoa Building, Pittsburgh 19, Pa.
ALCOA
ALUMINUM
THIS FREE BOOK is filled with detailed data on the behavior o f aluminum in the process industries . . . the result of more than 3 0 years o f Alcoa engineering experience with aluminum in a variety o f applications in nearly every temperature range. Use it as your guide to trouble-free, corrosion-free process equipment and piping. W r i t e t o d a y f o r Process Industries Applications of Alcoa Aluminum.
OXYGEN NITROGEN
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1 Ι INTERCOOLER
AFTERCOOLER
AIR-NITROGEN REVERSING EXCHANGER
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AIR INLET
AIR COMPRESSOR Indicates Alcoa Aluminum η equipment and piping 90 A
INDUSTRIAL A N D ENGINEERING CHEMISTRY
