Marking, decoration & colour · finish comparison
Chemical Etching vs Laser Marking
Chemical Etching and Laser Marking are both marking & decoration finishes; laser mark is the lower-cost option ($).
Chemical Etching
Marking & decoration · $$$ · instant quote
Chemical etching uses a patterned resist and material-specific etchant to recess graphics or create a frosted contrast.
Laser Marking
Marking & decoration · $ · instant quote
Laser marking uses focused fiber, CO2, or UV energy to create permanent text, logos, serials, UDI, and machine-readable codes.
When to choose which
Choose Chemical etch
Chemical etch is the pick when its strengths below matter more than Laser mark's.
- Creates fine patterns without cutting force
- Can process multiple marks in a panel batch
- Typical decorative depth is 5–100 µm
Choose Laser mark
Choose Laser mark when for variable data without wet chemistry.
- Creates variable serials and UDI without a physical printing tool
- Supports about 0.10 mm minimum line width
- Annealed colour-change marks add no depth; shallow engraving is typically 5–50 µm
What the numbers say
- Laser mark is the lower-cost option ($).
- Laser mark is the thinner coating (0–50 µm), so it disturbs tight fits less.
Scores side by side
Each score is 0–100 against every finish in this catalog. Corrosion is derived from salt-spray test duration and surface hardness from the finish layer's Vickers hardness where a measured figure exists; a finish that leaves the base metal's own surface is not rated for hardness. Cosmetic, lubricity and cost are FabDigit's engineering assessment. Scores and typical figures are screening data, not matched side-by-side tests or service-life rankings; ASTM B117 is a controlled salt-fog method, not a field-life prediction.
| Score | Chemical etch | Laser mark |
|---|---|---|
| Corrosion resistance | 0 Minimal | 0 Minimal |
| Surface hardness / wear | — — | — — |
| Cosmetic quality | 76 Very good | 70 Very good |
| Lubricity | 10 Minimal | 10 Minimal |
| Cost | 40 $$$ | 18 $ |
Key numbers
| Property | Chemical etch | Laser mark |
|---|---|---|
| Thickness | 5–100 µm | 0–50 µm |
| Electrical | Unchanged | Unchanged |
| Colours | substrate contrast, optional paint fill | black, white, grey, substrate contrast, limited colour effects on selected materials |
| Relative cost | Premium ($$$) | Budget ($) |
| Added lead time | 4–8 working days | 1–3 working days |
| RoHS | Compliant | Compliant |
| Instant quote | Yes | Yes |
Bold marks the side that is ahead on a row where more (or less, for cost and lead time) is better. Ranges are the typical specification window; the drawing call-out fixes the class.
Which materials take each finish
| Material family | Chemical etch | Laser mark |
|---|---|---|
| Aluminum | Yes | Yes |
| Brass | Yes | Yes |
| Copper Alloy | Yes | With care |
| Glass | Yes | With care |
| Stainless Steel | Yes | Yes |
| Steel | Yes | Yes |
| Titanium | With care | Yes |
| Ceramic | — | With care |
| Magnesium Alloy | With care | With care |
| Polymer | Limited | With care |
| Zinc Alloy | With care | With care |
Specifications and drawing call-outs
Chemical etch
No governing public specification — called out by name and thickness.
CHEMICALLY ETCH LOGO AND SCALE 0.025–0.050 MM DEEP, 0.20 MM MIN LINE WIDTH, BLACK EPOXY FILL, LOCATION ±0.25 MM
Laser mark
- MIL-STD-130 — Identification Marking of U.S. Military Property
LASER MARK PER MIL-STD-130, DATA MATRIX ECC200, 6 × 6 MM, 0.10 MM MIN CELL, CONTRAST ≥ 30 %, GRADE 2.5 MIN PER ISO 15415
Chemical etch vs Laser mark — frequently asked
What is the difference between Chemical etch and Laser mark?
Chemical Etching and Laser Marking are both marking & decoration finishes; laser mark is the lower-cost option ($). Laser mark is the thinner coating (0–50 µm), so it disturbs tight fits less.
When should I use Chemical etch instead of Laser mark?
Conversely: choose Laser mark when for variable data without wet chemistry.
Is Chemical etch or Laser mark cheaper?
Laser mark is the lower-cost finish ($ against $$$ for Chemical etch) among the finishes FabDigit quotes. Both are priced per part with a lot minimum; the exact figure appears on the instant quote once the part is uploaded.