Anodized aluminum enclosure after Type II anodizing — deep black finish on seamless surface showing grain structure beneath
AFTER — TYPE II ANODIZE
Raw unfinished aluminum enclosure under flat workshop lighting — tool marks and fingerprints visible on bare metal surface
BEFORE — RAW ALUMINUM

Color that is the metal.

Drag to compare · Type II & III Anodizing

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PROCESS READOUT

Six steps.
Zero guesswork.

Every run follows the same controlled sequence. Click any node to see the exact parameters for that tank.

STEP 04ANODIZE
TEMP18–22°C
VOLTAGE12–20 V
DWELL20–60 min

Sulfuric acid bath, DC current grows aluminum oxide from surface

ELECTROLYTEH₂SO₄ 165–200 g/L
TEMP18–22 °C (Type II) / 0–5 °C (Type III)
VOLTAGE12–20 V DC
CURRENT DENSITY12–18 ASF
FILM GROWTH~0.1 mil per 5 min
FINISHED PRODUCT SPECS

Real measurements.
Not marketing claims.

Anodized aluminum earbud housing in matte black finish showing uniform surface quality

Earbud Housings

Type II · Matte Black

LIVE SPEC CARD

Coating Thickness

MIL-A-8625 Type II

0.4–0.7mil

Rockwell Hardness

ASTM B244

60–70HRC

Salt Spray

ASTM B117

336hrs

Color Delta-E

CIE2000

< 1.5ΔE

Dielectric Strength

ASTM D149

400–800V/mil

All specs tested per referenced ASTM/MIL standards. Certificates of conformance available on request.

WHO WE RUN FOR

Built for builders
who ship real parts.

Hardware Founders

500

avg Kickstarter run size

Kickstarter-to-production without the finish failures.

You have 500 units to ship and no tolerance for a coating that flakes under a thumbnail. We handle runs from 10 to 5,000 pieces with the same documented process — COA included, no upcharge.

  • Minimum 10 pieces per run
  • Certificate of conformance standard
  • 5–12 business day turnaround
  • Pantone color matching available
Custom Knife Makers

1000+

salt spray hours (Type III)

Type III hardcoat that outlasts the blade.

Titanium scales, G-10 liners with aluminum bolsters, 6061 frames — we anodize the metals you actually use. Masking to 0.005" keeps your pivot holes and blade channel clean.

  • Titanium & 6061/7075 aluminum
  • Masking tolerance ±0.005"
  • Type III: 1.0–2.0 mil thickness
  • 14 stock colors + custom
Consumer Electronics

< 1.5

ΔE color delta across runs

The finish that survives three months in a backpack.

Headphone cups, earbud housings, remote bodies — anodize is chemically bonded to the aluminum. It cannot chip, peel, or delaminate. Delta-E under 1.5 means your color stays consistent across every production run.

  • ΔE < 1.5 color consistency
  • MIL-A-8625 Type II certified
  • Batch-to-batch color records
  • NDA available for OEM clients
QUOTE REQUEST TERMINAL
START YOUR RUN

Parts don't quote themselves.

Tell us your alloy, quantity, and color. We'll reply with a line-item quote — coating thickness, turnaround date, and unit price — within one business day.

1 day

Quote turnaround

10 pcs

Minimum run size

5–12

Business days to ship

14+

Standard colors in stock

PDF

Anodize Process Specification Sheet

Rev 2.4 · 6 pages · Updated Feb 2026

MIL-A-8625 Type II & III parameters
Alloy compatibility chart (6061, 7075, 5052, Ti)
Masking tolerances and thread protection specs
Color availability and delta-E tolerances
Turnaround calendar and minimum quantities
Download Anodizing Spec Sheet (PDF)

No email required. Bring it to your engineering team.

Ready to run your parts?