How Fast Can a 30W Fiber Laser Mark? A 30W fiber laser marking machine marks serial numbers, logos, and 2D barcodes on metal parts at speeds up to 7000mm/s. It is the standard entry-level laser marker for production lines that need permanent, high-contrast marks on steel, aluminum, copper, and coated metals. The 30W power level balances marking speed, mark depth, and machine cost, making it the most popular configuration for electronics, automotive, hardware, and medical