①The alloy has good process plasticity in hot state. The forging and die forging temperature is 420~475°C, and the hot deformation with a deformation rate of 80% is carried out within this temperature range.
②The cold stamping performance is related to the alloy state. The cold stamping performance in the annealed (O) state is good, followed by the H32 and H34 states, and the H36/H38 state is not good.
2. Welding performance
① The alloy has good performance in gas welding, arc welding, resistance welding, spot welding and seam welding, and crystallization cracks tend to appear in two argon arc welding. The brazing performance is still good, but the soft soldering performance is poor.
② The strength and plasticity of the weld are high, and the strength of the weld reaches 90% to 95% of the strength of the base metal. However, the airtightness of the weld is not high. It is recommended to use 5A03 alloy as the solder, which can improve its airtightness and eliminate the tendency of cracks.
The machinability of the alloy in the annealed state is not good, but it is improved in the cold work hardened state.
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