It's very soft, metal blade would normally be a decent choice. Fine teeth might help. You could do it with a junior hacksaw if you can clamp it properly. Or one of the more stabby hacksaw cousins. Keeping the work still always seems to lead to good consistent results.
Cutting through aluminium with a jigsaw:
Is a metal blade going to be enough or should I be buying a aluminium specific blade?
I'm aiming to cut through a anodised aluminium BBQ grill grate.