Hard Anodizing
A thick, hard coating for high wear and corrosion resistance.
Hard Anodizing
Hard anodizing is a surface treatment that forms a thick, dense oxide coating by sulfuric acid electrolysis. A coating thickness of 15–40 µm achieves a surface hardness of Hv 400 or higher and meets the salt spray corrosion resistance and wear resistance required by MIL-PRF-8625 Type III, Hyundai/Kia MS633-06 and ZF TS2-25-102. It suits automotive parts with reciprocating or sliding friction, such as brake pistons and valves.
Aluminum
Coating thickness15–40 µm
Surface hardnessHv 400 or higher
Salt spray resistance720 h or more
Wear resistance (Taber)1.5 mg / 1,000 cycles or less
Treated Parts
Specifications
Materials6061-T6, 7075-T6 and other aluminum alloys
Coating thickness15–40 µm (controlled to drawing values)
Surface hardnessHv 400 or higher (per customer specification, measured with a Vickers hardness tester)
Corrosion resistanceSalt spray 720 h or more (ASTM B117 · ISO 9227, acceptance criteria per specification)
Wear resistanceTaber CS-17 1,000 g · 1.5 mg / 1,000 cycles or less (MIL-PRF-8625 Type III)
Applicable specificationsHyundai/Kia MS633-06 · ZF (TRW) TS2-25-102 · MIL-PRF-8625 Type III · Mando MES-M-00-SF-009
Maximum part sizeLength 3,000 × width 500 × depth 950 mm (internal tank dimensions; subject to rack configuration)
Contact us even if the specification you need is not listed.Hard Anodizing technical notes
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