Brasses wrought

Nickel-based aUoys have superior corrosion resistance to Hon-based aUoys. The only aUoys recommended for hot hydrochloric acid use are Ni—Mo aUoys containing 60—70% Ni and 25—33% Mo. Chlorimet (63 Ni, 32 Mo, 3 Fe) and HasteUoy (60 Ni, 28 Mo, 6 Fe) are found to be stable at aU acid concentrations in the absence of aH and Hon chlorides. Electroless nickel, a Ni—P aUoy containing 2—10% P, shows exceUent resistance to hot hydrogen chloride (71). The corrosion resistance increases with phosphoms content. This coating can be deposited on cast Hon, wrought Hon, mild steel, stainless steels, brass, bron2e, and aluminum (qv). 

The output from brass mills in the United States is spHt nearly equally between copper and the alloys of copper. Copper and dilute copper alloy wrought products are melted and processed from electrically refined copper so as to maintain low impurity content. Copper alloys are commonly made from either refined copper plus elemental additions or from recycled alloy scrap. Copper alloys can be readily manufactured from remelted scrap while maintaining low levels of nonalloy impurities. A greater proportion of the copper alloys used as engineering materials are recycled than are other commercial materials. 

Table 16. Conductivity and Wrought Tensile Strength of Tin-Brasses Showing the Hardening Effect of Tin Additions...

Pb for ease of machining. Duplex (a-/3) brasses containing more than 37% Zn, may have additions of 1% Sn (Naval brass), or 1-3% Pb to assist machining. Both a and a-0 brasses, with and without lead, are used in the cast as well as the wrought form. 

High-tensile brasses are a-0 (or, occasionally, /3) alloys containing up to 5% A1 and 1-2% of one or more of the following Sn, Pb, Fe, Mn. These alloys also are used in both wrought and cast form. 

Nickel silvers These wrought alloys consist essentially of Cu, Zn and Ni, with Ni in the range 10-30%. Leaded nickel brasses are also used, usually where some machining is involved. 

Copper alloys in wrought or cast form are used for other purposes in ships and other marine installations, such as for propellers bearings, valves and pumps. One widespread application of aluminium-brass is its use for heating coils in tankers carrying crude oil or petroleum products. Some corrosion problems encountered in this and other applications on board ship have been described by Gilbert and Jenner . 

Standard Handbook — Copper, Brass, Bronze, Wrought Mill Products, 8lh edn, Copper Development Association Inc., New York (1985) Properties and Applications of Wrought Coppers and Copper Alloys , Meta Prog., 98, 85 (1970)... 

The alloys are often classified according to different criteria. One convenient classification is based on the most characteristic method used for shaping alloy-based objects. Examples are cast alloys and wrought alloys. Cast alloys, such as cast bronze, cast brass, and cast iron, are generally... 

Brassinosteroids, as natural plant growth regulators, 73 22-28 Brass mills, 7 671, 690 Brass plating, 9 766, 809-810 Braunite, 75 540 Bravais lattices, 8 114t Brazeability, copper wrought alloys,... 

Cartridge brass - [COPPERALLOYS - WROUGHT COPPER AND WROUGHTCOPPERALLOYS] (Vol 7)... 

These alloys are available as wrought or cast alloys. The principal wrought copper alloys are the brasses, leaded brasses, phosphor bronzes, aluminum bronzes, silicon bronzes, bciylhum coppers, cupronickels. and nickel silvers. The major cast copper alloys include the red and yellow brasses, manganese, tin, aluminum, and silicon bronzes, beryllium coppers, and nickel silvers. The chemical compositions range widely. For example, a leaded brass will contain 60% copper, 36 to 40% zinc, and lead up to 4% a beryllium copper is nearly all copper, containing 2.1% beryllium, 0.5% cobalt, or nickel, or in another formulation, 0.65% beryllium, and 2.5% cobalt. 

Classically, a bronze is defined as an alloy of copper and tin, but over the years Ihe lerm has taken on a much broader meaning. The term inay apply to numerous copper alloys that possess a crystalline, bron/e-like structure, are of a bronze color, or may contain some tin. Further, bronze generally is considered a casting metal. In contrast, brass is generally wrought. Some alloys are commercially named bronze even Ihough they contain no tin whatsoever... 

Alloys. Tin is widely used as both a major and minor ingredient of alloy metals. These applications are summarized in Tables 1, 2, and 3. Phosphor bronzes (Table 3) actually contain very little phosphorus, ranging from 0.03 to 0.50%, and hence the alloys are poorly designated. Tin bronzes is the better term. High-silicon bronzes contain about 2.8% tin low-silicon bronzes about 2.0% tin. Gun metals are tin bronze casting alloys with a 5 10% zinc content. Some wrought copper-base alloys contain tin (1) Inhibited Admiralty metal, 1% fin (2) manganese bronze, 1% tin (3) naval brass, 0.75% tin, (4) leaded naval brass, 0.75% tin. See also Copper. 

The materials used in propane dispensers include steel, wrought iron, brass, and aluminum. Dispensing nozzles are made from aluminum, brass, and steel. Few elastomer gaskets are used in propane systems—most are aluminum or steel. Propane dispensing systems should incorporate filters to prevent debris and heavy oils from being pumped into the vehicle fuel tank. 

The composition of copper-aluminum (wrought and cast), cupronickels, copper-tin (wrought and cast) and brasses are given in Tables 4.26—4.31. 

Percent roughness For value of/see curve Drawn tubing, brass, tin, lead, glass Clean steel, wrought iron Clean, galvanized Best cast iron Average cast iron Heavy riveted, spiral riveted ... 

Aluminum brass (Yti Cu 0 4 2 2 <400 Wrought, cast Good Fair 60 10.3 Possibility of developing localized corrosion in seawater... 

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