Leaded brass

Leaded brass Leaded bronzes Leaded Muntz metal Leaded red brass... 

Selenium has also been shown to act synergistically with bismuth to improve the machinabifity of brasses (113). The machining properties are similar to those of the leaded brasses used in plumbing appfications. Environmental concerns arising from the leaching of lead brasses necessitates a replacement of the lead. 

AQ grades of zinc slab are used to some degree in brasses and bronzes. In many leaded brass-mill products, the lead originates from the slab zinc the accompanying cadmium is usually acceptable. 

Sample Specifications 6 /2 in. (16.5 cm) diameter, bronze impeller, 1 in. (2.5 cm) diameter, leaded brass bushing... 

Figure 13.15 The tricolor internal surface of a leaded-brass bushing. Greenish-blue corrosion product overlies the red of the generally dezincified surface. To the extreme right, only bare metal is visible due to erosion.

Liquids may break down if exposed to air, water, salt, or other impurities, especially if they are in constant motion or subjected to heat. Some metals, such as zinc, lead, brass, and copper, have undesirable chemical reactions with certain liquids. 

Tin was known and used at least 5,500 years ago, when it was described in the oldest written records of the Mediterranean region. It is included in the book of Numbers in the Old Testament, along with the other then-known seven metals (gold, silver, copper, lead, brass, and iron). Bronze is an alloy of 20% tin and 80% melted copper, resulting in a metal that is harder than either pure tin or pure copper. Bronze was an extremely important metal because... 

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. 

Several of the low-temperature superconducting metals, such as lead, brass, and some solders (particularly lead-tin alloys), experience property changes when they become superconducting. Such changes can include specific heat, thermal conductivity, electrical resistance, magnetic permeability, and thermoelectric resistance. Consequently, the use of these superconducting metals in the construction of equipment for low-temperature operation must be evaluated carefully. 

Leaded Brass, Naval Brass, Leaded Bronze... 

Yttrium or misch metal for improving the oxidation resistance of OFHC copper and elimination of hot tearing in leaded brasses... 

CDA. Copper Development Association produced designations for copper alloys using a three-digit system. For example, copper alloy 836 is a cast leaded brass containing specified amounts of zinc, lead and tin. 

Note Over a period of time, sodium azide may react with copper, lead, brass, or solder in plumbing systems to form an accumulation of the HIGHLY EXPLOSIVE compounds of lead azide copper azide.] ... 

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