The Effects of Laser Marking and Symbol Etching on the Fatigue Life of Medical Devices

Table 1

Comparison between fatigue life and initial marking depth.

Initial depth	𝑎1=25 μm	𝑎1=50 μm	𝑎1=75 μm	𝑎1=37.6 μm
Life (cycles)	503 × 10^3	250 × 10^3	165 × 10^3	333.6 × 10^3
Reduction in life	N/A	25%	50%	0%