Leaded bronzes

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

Zinc dust, light metal alloys, desilvering lead, bronze and brass powders, zinc chemicals. 

Lead-bronze 75% Cu - 20% Pb - 5% Sn High performance i.c. engines, camshafts, gearboxes... 

Aluminum, lead (ASTM-B-23 gr. 8 high lead), bronze... 

Tin-bronzes and gunmetals Alloys containing 3-0-12-5% Sn and 0-02-0-04% P, known as phosphor-bronzes, are widely employed. Cast as well as wrought alloys are used, and cast leaded bronzes are also available. 

Hughes, M.J., Northover, J.P. and Staniaszek, B.E.P. (1982). Problems in the analysis of leaded bronze alloys in ancient artefacts. Oxford Journal of Archaeology 1 359-363. 

Two hundred twenty four Chinese coins (Song Dynasty, ca. 990-1080 A.D.) were analyzed via energy dispersive X-ray fluorescence spectrometiy for the following elements copper (Cu), zinc (Zn), tin (Sn), lead (Pb), iron (Fe), nickel (NO. manganese (Mn), antimony (Sb), gold (Au), platinum (Pt), palladium (Pd), and silver (Ag). The coins routinely appear to be leaded bronze. However, the amount of lead present in these coins was in many cases significantly higher than expected. 

The coins appear in almost all cases to be leaded bronze. In a number of samples, the outliers contained as much or more lead than copper, and in many instances, the lead content was significantly higher than that of tin. 

The coins are leaded bronze. The almost complete absence of zinc indicates they are definitely not brass. 

Leaded Brass, Naval Brass, Leaded Bronze... 

The coins made before 135 B.C. are almost all leaded bronzes (Figure 10). However, the two earliest coins, made in the late third century B.C., have low lead contents. The lead contents increased rapidly with passing time, until exceptionally high lead contents were found in the coins of three denominations semisses, asses, and a triens, all of the middle of the second century B.C. The reported lead contents of some of these coins are probably lower than the actual contents because of the segregation and surface depletion of lead. Appreciable amounts of lead were not frequently added to coins after roughly 100 B.C. A marked change in the composition of coins occurred both before 135 B.C. and after about 100 B.C. (Only one... 

Figure 4. Chill-cast, tin-lead bronzes contours of equal density...

Figure 8, Chill-cast, tinr-lead bronzes elongation (%)...

Ampcoloy [Ampco], TM for a series of industrial copper alloys including low-iron-aluminum bronzes, nickel-aluminum bronzes, tin bronzes, manganese bronzes, lead bronzes, beryllium-copper, and high-conductivity alloys. 

Bearium. TM for high-lead bronze with 18-26% lead that is used for bearings and similar items. 

Lead bronzes Cu-Sn-Pb-alloys. These are used almost exclusively for bearings, where loads and speeds are moderate... 

Two shaft surfaces, hard chrome. plate and S.80 were used with the carbon and metal bushes. With the PTFE containing bushes, S.80 hard chrome, 18/8 stainless steel and lead-bronze shafts were used. Liquid nitrogen and liquid oxygen were used as the immersing liquids. The work has been extended to investigate damage which can occur when the liquid supply fails and operating temperatures increase substantially. 

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