⑴ Formability
① The alloy has good plasticity in hot state process. The forging and die forging temperature is 420~475°C, and the thermal deformation rate of 80% is carried out in this temperature range.
② The cold stamping performance is related to the alloy state. The cold stamping performance of annealing (O) state is good, followed by H32 and H34 state, and H36/H38 state is not good.
⑵ welding performance
① The alloy has good performance in gas welding, electric arc welding, resistance welding, spot welding and seam welding, and the tendency of crystallization crack appears in diargon arc welding. Hard brazing performance is good while soft brazing performance is poor.
② The strength and plasticity of the weld are high, and the strength of the weld reaches 90%~95% of the strength of the matrix metal. But the air tightness of the weld is not high, it is recommended to use 5A03 alloy as solder, which can improve its air tightness and eliminate the crack tendency.
(3) Machining performance
The cutting property of the alloy is not good in annealed state, but improved in cold hardening state.