Medical-Grade Materials We Can Mark

• 304 / 304L
• 316 / 316L (most common in medical)
• 17-4 PH
• Other passivatable grades — ask us

Laser annealing on stainless produces a black iron oxide mark with no material removal. Passivation layer preserved. Sterilization resistant. The correct process when annealing is called out on the print.

• Grade 2 (commercially pure)
• Grade 5 — Ti-6Al-4V
• Grade 23 — Ti-6Al-4V ELI (implant grade)

Annealing on titanium produces color-shifted oxide marks — permanent, biocompatible, and flush with the surface. Commonly used on orthopedic implants, spinal hardware, and surgical instruments.

• 6061, 7075, and other aluminum alloys
• Type II and Type III anodized surfaces
• Anodize layer preserved — no burn-through

MOPA technology marks anodized aluminum without burning through or discoloring the anodize layer. The mark reads clearly and the surface integrity stays intact.

• White Delrin / POM-H (including "unmarkable" grades)
• PEEK, Ultem, polycarbonate
• ABS, nylon, other engineering thermoplastics

White Delrin is notoriously difficult — most shops turn it away. Our MOPA laser with specialized surface treatment produces a permanent, high-contrast mark where others have failed. If you've been told your plastic part can't be marked, ask us.

• Metal-to-plastic assemblies
• Coated and plated surfaces
• Assemblies where only one surface needs marking

When the assembly has multiple materials or a specific marking zone, we work from your drawing to determine the right process for each surface. Send us the part and we'll confirm feasibility before quoting.