Aluminium brass is a technically rather uncommon term for high-strength and partly seawater-resistant copper-zinc cast and wrought alloys with 55–66% copper, up to 7% aluminium, up to 4.5% iron, and 5% manganese.
The term "special brass" is much more common for this, which then also includes alloys that add further characteristic elements to the copper-zinc base.
In addition to the already mentioned elements of iron and manganese, lead, nickel and silicon can also be found as alloy components.
Even when potting, attention must be paid to any oxides forming.
Most 7000 series alloys include magnesium and copper as well.