Marking, decoration & colour · finish comparison
Electrochemical Etching vs Laser Marking
Electrochemical Etching and Laser Marking are both marking & decoration finishes; laser mark is the lower-cost option ($).
Electrochemical Etching
Marking & decoration · $$ · instant quote
Electrochemical etching makes a localized permanent mark on an electrically conductive part through a stencil and electrolyte.
Laser Marking
Marking & decoration · $ · instant quote
Laser marking uses focused fiber, CO2, or UV energy to create permanent text, logos, serials, UDI, and machine-readable codes.
When to choose which
Choose Electrochemical etch
Electrochemical etch is the pick when its strengths below matter more than Laser mark's.
- Marks hardened or finished conductive metals without cutting force
- Typical depth is about 2–25 µm
- Portable equipment reaches large assembled parts
Choose Laser mark
Choose Laser mark when for high-speed variable data.
- Creates variable serials and UDI without a physical printing tool
- Supports about 0.10 mm minimum line width
- Annealed colour-change marks add no depth; shallow engraving is typically 5–50 µm
What the numbers say
- Laser mark is the lower-cost option ($).
- Electrochemical etch is the thinner coating (2–25 µm), so it disturbs tight fits less.
Scores side by side
Each score is 0–100 against every finish in this catalog. Corrosion is derived from salt-spray test duration and surface hardness from the finish layer's Vickers hardness where a measured figure exists; a finish that leaves the base metal's own surface is not rated for hardness. Cosmetic, lubricity and cost are FabDigit's engineering assessment. Scores and typical figures are screening data, not matched side-by-side tests or service-life rankings; ASTM B117 is a controlled salt-fog method, not a field-life prediction.
| Score | Electrochemical etch | Laser mark |
|---|---|---|
| Corrosion resistance | 0 Minimal | 0 Minimal |
| Surface hardness / wear | — — | — — |
| Cosmetic quality | 55 Good | 70 Very good |
| Lubricity | 10 Minimal | 10 Minimal |
| Cost | 24 $$ | 18 $ |
Key numbers
| Property | Electrochemical etch | Laser mark |
|---|---|---|
| Thickness | 2–25 µm | 0–50 µm |
| Electrical | Unchanged | Unchanged |
| Colours | dark oxide, light etched metal, substrate contrast | black, white, grey, substrate contrast, limited colour effects on selected materials |
| Relative cost | Standard ($$) | Budget ($) |
| Added lead time | 1–3 working days | 1–3 working days |
| RoHS | Compliant | Compliant |
| Instant quote | Yes | Yes |
Bold marks the side that is ahead on a row where more (or less, for cost and lead time) is better. Ranges are the typical specification window; the drawing call-out fixes the class.
Which materials take each finish
| Material family | Electrochemical etch | Laser mark |
|---|---|---|
| Aluminum | With care | Yes |
| Brass | Yes | Yes |
| Stainless Steel | Yes | Yes |
| Steel | Yes | Yes |
| Titanium | With care | Yes |
| Ceramic | No | With care |
| Copper Alloy | With care | With care |
| Glass | No | With care |
| Magnesium Alloy | With care | With care |
| Polymer | No | With care |
| Zinc Alloy | With care | With care |
Specifications and drawing call-outs
Electrochemical etch
No governing public specification — called out by name and thickness.
ELECTROCHEMICALLY ETCH PART NO. AND LOT CODE PER MIL-STD-130, 2.5 MM CHARACTER HEIGHT, 0.010–0.025 MM DEEP, BLACK
Laser mark
- MIL-STD-130 — Identification Marking of U.S. Military Property
LASER MARK PER MIL-STD-130, DATA MATRIX ECC200, 6 × 6 MM, 0.10 MM MIN CELL, CONTRAST ≥ 30 %, GRADE 2.5 MIN PER ISO 15415
Electrochemical etch vs Laser mark — frequently asked
What is the difference between Electrochemical etch and Laser mark?
Electrochemical Etching and Laser Marking are both marking & decoration finishes; laser mark is the lower-cost option ($). Electrochemical etch is the thinner coating (2–25 µm), so it disturbs tight fits less.
When should I use Electrochemical etch instead of Laser mark?
Conversely: choose Laser mark when for high-speed variable data.
Is Electrochemical etch or Laser mark cheaper?
Laser mark is the lower-cost finish ($ against $$ for Electrochemical 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.