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The lengths are variable from 3/8" to 60" (for deformed bars). Arc studs are typically loaded with an aluminium flux ball on the weld end which aids in the welding process. Drawn arc weld studs are commonly made from mild steel and stainless steel.
Structural steel welding - Stud welding (steel studs to steel) AS/NZS 1554.3: Structural steel welding - Welding of reinforcing steel AS/NZS 1554.4: Structural steel welding - Welding of high strength quenched and tempered steels AS/NZS 1554.5: Structural steel welding - Welding of steel structures subject to high levels of fatigue loading AS ...
Tap-end studs have threads at extreme ends of the body with unequal thread engagement length, while double-end stud bolts have equal thread length at both ends. Apart from these, there are stud bolts for flanges, which are fully threaded studs with chamfered ends, and double-end studs with reduced shank for special bolting applications.
Friction stud welding is a solid phase welding technique involving a stud or appurtenance being rotated at high speed while being forced against a substrate, generating heat by friction. The metal surfaces reach a temperature at which they flow plastically under pressure, surface impurities are expelled and a forged weld is formed.
Especially useful for welding thin materials, this method is characterized by a stable arc and high quality welds, but it requires significant operator skill and can only be accomplished at relatively low speeds. It can be used on nearly all weldable metals, though it is most often applied to stainless steel and light metals.
ISO 14555 is an ISO standard for arc stud welding of metallic materials.It was incorporated as a European Norm as EN (ISO) 14555 and is referenced by Eurocode 4 in the evaluations of the design shear resistance of a headed stud which is automatically welded according to this standard.