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Building Design and Construction Handbook - Merritt - Ventech!

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4.65 LEAD BIBLIOGRAPHY<br />

TABLE 4.23 Composition of Nickel Alloys<br />

Content<br />

Nickel<br />

alloy,<br />

lowcarbon<br />

NO2201<br />

ASTM<br />

B160<br />

Nickel<br />

alloy<br />

NO2200<br />

ASTM<br />

B160<br />

BUILDING MATERIALS 4.85<br />

American Society for Metals, Clevel<strong>and</strong>, Ohio: ‘‘Metals H<strong>and</strong>book.’’<br />

NICKEL AND NICKEL-BASED ALLOYS<br />

Nickel is used mostly as an alloying element with other metals, but it finds use in<br />

its own right, largely as electroplate or as cladding metal. Among the principal<br />

high-nickel alloys are Monel <strong>and</strong> Inconel. The nominal compositions of these metals<br />

are given in Table 4.23<br />

4.66 PROPERTIES OF NICKEL AND ITS ALLOYS<br />

Nickel is resistant to alkaline corrosion under nonoxidizing conditions but is corroded<br />

by oxidizing acids <strong>and</strong> oxidizing salts. It is resistant to fatty acids, other<br />

mildly acid conditions, such as food processing <strong>and</strong> beverages, <strong>and</strong> resists oxidation<br />

at temperatures as high as 1600�F.<br />

Monel is widely used in kitchen equipment. It is better than nickel in reducing<br />

conditions like warm unaerated acids, <strong>and</strong> better than copper under oxidizing conditions,<br />

such as aerated acids, alkalies, <strong>and</strong> salt solutions. It is widely used for<br />

h<strong>and</strong>ling chlorides of many kinds.<br />

Inconel is almost completely resistant to corrosion by food products, pharmaceuticals,<br />

biologicals, <strong>and</strong> dilute organic acids. It is superior to nickel <strong>and</strong> Monel<br />

Monel<br />

NO4400<br />

ASTM<br />

B127<br />

Inconel<br />

NO6600<br />

ASTM<br />

B168<br />

70–30<br />

cupronickel<br />

C71500<br />

ASTM<br />

B171<br />

90–10<br />

cupronickel<br />

C70600<br />

ASTM<br />

B171<br />

Carbon 0.02 0.15 0.2 0.15 max<br />

Manganese 0.35 0.35 2.00 max 1.0 max 1.0 max 1.0 max<br />

Sulfur 0.01 0.01 0.024 max 0.015 max<br />

Silicon 0.35 0.35 0.5 0.5 max<br />

Chromium 14–17<br />

Nickel 99 min 99 min 63–70 72 min 29–33 9–11<br />

Copper 0.25 0.25 Remainder 0.5 max 65 min 86.5 min<br />

Iron 0.40 max 0.40 max 2.5 max 6–10 0.40–1.0 1.0–1.8<br />

Lead 0.05 max 0.05 max<br />

Zinc 1.0 1.0

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