Is it necessary to heat treat aluminum bronze QAL9-4 as bushing?

the as-cast structure of qal9-4 in the casting process has met the performance requirements, so heat treatment is not needed.

QAl9-4 belongs to the national standard aluminum bronze, and the implementation standard is GB/T 4423-27

QAl9-4 is an aluminum bronze containing iron, which has high strength and antifriction, good corrosion resistance, good pressure workability in hot state,

it can be welded and gas welded, but its solderability is not good, so it can be used as a substitute for high-tin wear-resistant bronze.

QAl9-4 has the following chemical composition:

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