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  • Bronze and Copper-Alloy Bearings
    Dozens of copper alloys are available as bearing materials. Most of these can be grouped into five classes: copper lead, copper tin (sometimes called tin bronze), leaded bronze, aluminum bronze, and beryllium copper. As a general rule in these alloys, a higher lead content promotes compatibility
  • Back to the future with copper brazing
    passengercar debut in 1939, were made from copper and brass. Copper's high thermal conductivity made it a natural choice for the fins and heat exchangers. However, most of these systems were soldered with tin-lead alloys. Although by 1969 more than half of all new cars sold were AC-equipped
  • Copper-jacketed germ buster
    Copper and its alloys may be the latest weapon against superbugs. Jean M. Hoffman Senior Editor The natural antimicrobial and self-decontaminating properties of copper make it a candidate for use in hospitals and other health-care facilities on touch surfaces that are potential reservoirs
  • The Proliferation of Lead-Free Alloys
    The advent of the EU's RoHS law has encouraged a significant amount of research to find an alloy, for electronic assembly that will satisfy RoHS's lead-free requirement and have optimum process ability and field reliability. The resulting research, much of it lead by iNEMI, resulted in the near
  • Mil-P-81728 Tin-Lead: Electrodeposited
    for bids or request for proposal form a part of this specification to the extent specified herein. Specifications Federal QQ-N-290 Nickel Plating (Electrodeposited) QQ-S-571 Solder, Tin-Alloy; Lead-Tin Alloy; and Lead Alloy QQ-S-624 Steel Bar; Alloy; Hot Rolled and Cold Finished Military MIL-S-5002 Surface
  • Switch Tips: Lead-free solders and electromechanical switches
    -silver-copper (SnAgCu) and tin-copper (SnCu). However, both these alloys have melt temperatures considerably higher than tin-lead (SnPb). The reflow temperature profile for SnPb can reach 210 to 225 C. The reflow profile for SnAgCu will reach 260 C, and rework temperatures are even higher
  • Medical Device Link .
    widely used lead-free solders are alloys of tin, silver, and copper. Two of these alloys, Sn96.5Ag3.0Cu0.5, known as SAC 305, and Sn95.5Ag4.0Cu0.5, known as SAC 405, probably account for well over 90% of the lead-free solder currently in use. One of the most significant differences between
  • Tin
    can be cast, rolled, extruded, or atomized. Because pure tin is too weak to be used alone for most mechanical applications, it is usually alloyed with elements such as copper, antimony, lead, bismuth, and zinc. Tin and its alloys are cast using most conventional techniques, including gravity die

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