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E alloy
met.	锌铝合金铜 2% ~3%,镁 0.25% -0.5%,锰0.25% -0.5%,锌 15% -20%，硅0.2%，其余铝; E 含锌硬铝合金 (2~3Cu, 15〜 20Zn, 0.25 ~ 0.5Mg, 0.25-0.5Mn, 0.2Si,余量 Al)

E alloy: 7 phrases in 1 subject

Metallurgy

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