...at least, what's the recommended practice on this? Does the metal the clamp is made from matter?
not at all.
just make sure you keep everything well greased and take the post out the frame every now and again to check for corrosion.
Mine has a carbon post and alloy clamp, never had any problems. I wouldn't worry about using an alloy post either just move it every so often to check you still can.
Ah, looking more closely you can't get steel clamps can you.
Presumably clamps don't get stuck like posts due to electrolytic things going on between steel and alu then?
edit: oh look, replies ^^^ cheers 🙂
Presumably clamps don't get stuck like posts due to electrolytic things going on between steel and alu then?
a thin layer of grease works wonders
I'd say the paint on the outside of the frame will protect the clamp.
Cool, nice one. Yes, that figures. In any case the surface contact area of the clamp is tiny compared to the post.