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A6061. 6061 aluminium alloy (Unified Numbering System (UNS) designation A96061) is a precipitation-hardened aluminium alloy, containing magnesium and silicon as its major alloying elements. Originally called "Alloy 61S", it was developed in 1935. [2] It has good mechanical properties, exhibits good weldability, and is very commonly extruded ...
Klein Bikes. Klein was a bicycle company founded by Gary Klein that pioneered the use of large diameter aluminium alloy tubes for greater stiffness and lower weight. Klein produced his first bicycle frames while a student at the Massachusetts Institute of Technology during the 1970s, and full production runs of frames began in the 1980s. In ...
This page lists notable bicycle brands and manufacturing companies past and present. For bicycle parts, see List of bicycle part manufacturing companies.. Many bicycle brands do not manufacture their own product, but rather import and re-brand bikes manufactured by others (e.g., Nishiki), sometimes designing the bike, specifying the equipment, and providing quality control.
The 1984 SM-500 All-Terrain Bicycle was Cannondale's first mountain bike. The front wheel was 26 inches in diameter whereas the rear wheel was only 24 inches large "to increase traction for climbing in steep, muddy terrain", Cannondale said. The frame was TIG welded from 6061 aluminium alloy and was fully heat treated.
Popular alloys for bicycle frames are 6061 aluminum and 7005 aluminum. The most popular type of construction today uses aluminum alloy tubes that are connected together by Tungsten Inert Gas (TIG) welding. Welded aluminum bicycle frames started to appear in the marketplace only after this type of welding became economical in the 1970s.
In addition, there is the phase before the for the Aluminium-copper alloys are typical. Alloys with higher copper content (alloyings 6061, 6056, 6013) are mainly used in aviation. Iron occurs in all aluminium alloys as an impurity in quantities of 0.05-0.5%.