2014 aluminum alloy wire is a hard aluminum alloy and is a wrought aluminum alloy. Compared with 2A50, because of the high copper content, the strength is higher and the heat strength is better, but the plasticity in the hot state is not as good as 2A50. Well, 2014 aluminum alloy wire has good machinability, good contact welding, spot welding and seam welding performance, poor arc welding and gas welding performance; heat treatment strengthening, squeezing effect; low corrosion resistance, artificial aging There is a tendency to corrosion during inspection.
chemical composition:
Aluminum Al: balance
Silicon Si: 0.6~1.2
Copper Cu: 3.9 to 4.8
Magnesium Mg: 0.40~0.8
Zinc Zn: ≤0.30
Manganese Mn: 0.40~1.0
Titanium Ti : ≤ 0.15
Nickel Ni: ≤0.10
Iron Fe: 0.000~0.700
Note: Single: ≤ 0.05; Total: ≤ 0.15
Mechanical properties:
Tensile strength &;b (MPa): ≥ 440
Elongation δ5 (%): ≥10
Note: Longitudinal mechanical properties of bar at room temperature Specimen size: Bar diameter (square bar, hexagonal bar inscribed circle diameter) ≤ 22
Heat treatment specification:
1) Homogenization annealing: heating 475 ~ 490 ° C; holding 12 ~ 14h; furnace cooling.
2) Complete annealing: heating 350 ~ 400 ° C; with the effective thickness of the material, the holding time is 30 ~ 120min; with the temperature of 30 ~ 50 ° C / h with the furnace cooled to 300 ° C, and then air cooled.
3) Rapid annealing: heating 350 ~ 460 ° C; holding time 30 ~ 120min; air cooling.
4) Quenching and aging: quenching 495 ~ 505 ° C, water-cooled; natural aging room temperature 96h.
Status: extruded aluminum and aluminum alloy bars (≤22mm, H112, T6)
