"*4
A 500-liter Dewar Flask, made of Monel®, used for transporting liquefied gases. Hofman Laboratories, Inc.. of Newark, N . J., chose Monel for this service because it has the necessary strength and toughness at -330° F., and because Monel takes a mirror finish required for very high insulating vacuum.
What happens when temperatures DROP? Many materials behave strangely at sub-zero temperatures . . . but Inco Nickel Alloys often have improved characteristics . . .
The Inco Nickel Alloys, Monel, Nickel and I n c o n e l , a c t u a l l y increase in strength when temperatures drop, and without appreciable change in ductility.
W h e n the mercury freezes solid . . . and the temperature keeps on falling, common objects develop startling traits.
In addition to very superior lowtemperature characteristics, the Inco Nickel Alloys offer several other im portant engineering advantages . . . ex cellent resistance to the corrosive action of a wide variety of chemicals, work ability and weldability, good resistance to both stress- and vibration-fatigue.
An orange can be used to drive a nail. A rubber ball shatters under a hammer blow. A garden hose becomes a rigid bar that will support your weight. T o the designer of low-temperature equipment, these unfamiliar antics pose serious problems. Many metals become excessively brittle . . . often to the point of being useless as structural materials. For example, an alloy steel, with a room temperature impact strength of 119.8 foot-pounds, showed a drop in impact strength to only 6.4 foot-pounds at the temperature of liquid nitrogen. Other carbon and low alloy steels show simi lar tendencies. T h e key that has unlocked many such problems is nickel. Used as an alloying element in steels, nickel de creases low-temperature embrittlement.
Among the many low-temperature applications, where Inco Nickel Alloys can prove highly successful, are: pro ducing, handling and storing of lique fied gases; laboratory research, low tem perature treatment of metals. Since nickel and nickel alloys are in short supply right now, you may not be able to get all of these materials you want for your low-temperature require ments. However, for helpful advice on metal problems, feel free to consult Inco's Technical Service Section. T h e y will be glad to help you—without cost or obligation, of course.
THE INTERNATIONAL NICKEL C O M P A N Y , INC.
Helium liquéfier at the National Bureau of Standards, used to study the behavior of the gas at -455.75°F. — less than 4 degrees above absolute zero. Heart of the apparatus is a thick-walled Monel chamber in which helium is cooled under pressure, preparatory to expansion and liquefaction. EMBLEM oic« *~
OF SERVICE ur ai
NICKEL ^ ™ > ALLOYS MONEL® · "R"® MONEL · "K"® MONEL "KR"® MONEL · "S"® MONEL NICKEL · LOW CARBON NICKEL DURANICKEL® INCONEL® · INCONEL " X " ®
67 Wall Street, New York 5, Ν. Υ. VOLUME
2 9,
NO
6
.
.
FEBRUARY
5,
1951
487
