China Aircraft Aerospace Extruded Aluminum Round Bar for Aviation

Aircraft Aerospace Extruded Aluminum Round Bar for Aviation
Get more application of 3xxx series alloys in aerospace manufacturing is 3A21, which belongs to the heat treatment can not be strengthened Aluminum Alloy, its strength is not high, but higher than 1xxx series alloy, cold deformation can increases the strength and plasticity in the annealed state can be very high. Processing various semi-finished products, plate, belt, foil, tube, rod, wire type, etc., and forging and die forging. 3A21 aluminum alloy sheet profile forgings has good weldability, special welding performance excellent friction stir welding, welding, easy to hydrogen atoms and contact welding; has high corrosion resistance, equivalent to 1xxx alloy machinability is poor.
3A21 aluminum alloy sheet profile forgings are mostly used in the manufacture of aircraft oil tanks, gasoline and lubricating oil ducts, cold stamping parts, rivets and small force parts.
The cold stamping performance of 3A21 alloy in annealed state is good, the state of H*4 is second, and the state of H*8 is not good. The hot state process has good plasticity. The temperature of hot die forging is 420~475 ºC.
The surface treatment performance of 3A21 alloy is good, the machinability and grinding performance are not good, but not the O state material.

Chemical Composition of 3A21 AlloyAlloySiFeCuMnMgCrNiZnTiZr OthersAlEachTotal3A210.6 0.700.05~0.51.0~1.60.050.10~0.10~~0.050.15Remainder
Calibrated Mechanical Strength of 3A21 Aluminum Alloy Sheet Profile Forgings Technical StandardTypeTest Temperδor d/mmTension Strength RmA/%Not less thanYS/T 213
YS/T 215Aluminum sheetO0.3~3.098~14722>3.098~14720Hx40.3~6.5147~2166Hx80.3~0.51861>0.51862>0.81863>1.21864GB/T 3880Aluminum sheetO>0.2100~15019>0.823>4.521H14
H24>0.2145~2156>0.86>1.36H18>0.21851>0.52>0.83>1.34H112>4.511016>10.012016>12.512016>25.011016GJB 2053Aluminum sheetO0.5~0.798~14718>0.722>3.020Hx40.5~4.0147~2156Hx80.5~0.81862>0.83>1.24GJB 2662Aluminum plateO>498~14720H1127~1010815>1011815>2510812GB/T 3191Extruded aluminum barH112, O≤150≤16520GJB 2504Extruded aluminum bar5~150≤16720>150≤16715HB 5202Extruded aluminum bar≤240≤16720GJB 2507Extruded aluminum barH112, OAll≤16716GB/T 4437Aluminum tubeH112All≤167-GJB 2381H112, O25~250GJB 2351Cold drawn aluminum tubeOAll≤137-Hx8All137-GJB 2351Free forgings,Die forgingsH112As agreed≤16720GB/T 3196GB/T 3196Aluminum wireHx81.6~10.069-GJB 2055