Fiber laser machines can easily and acurrately mark on all kinds of metals. And high power lasers can cut metals, not only soft metals like aluminum but very hard alloys can also be marked accurately. Here below is a list of metals that can be marked or engraved by fiber laser marking machine.
Stainless Steel, Anodized aluminum, Hardened metals, Alloyed steels, High-speed steels, Titanium, titanium alloys, Carbides, Aluminum, Brass, Copper, Precious metals (e.g. silver, gold), Coated metals and so on..