You can laser etch a wider variety of materials, including steel, aluminum, anodized aluminum, lead, magnesium, and zinc. There’s also a unique method called laser annealing to mark metals like stainless steel.
Laser engraving technology is typically used to engrave metal workpieces that will be exposed to various types of wear or surface treatments. Metal engraving works with steel and aluminum (including anodized and die-casting aluminum).