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Vill12 Surface Treatment for ADC12

Transforming Aluminum Die Cast Parts into Functional Parts

Superb Roughness Characteristics

With standard anodizing, the surface of machined and cut parts becomes rough due to anodizing treatment. However, with Vill12, implementation of a completely different treatment process generates a film structure with a roughness close to that of the pretreated surface.

Superb Roughness Characteristics

  • Corrosion Resistance Comparison (Vill12 = 5μ)

    Salt Spray Test (120 hours)

    Corrosion Resistance Comparison (Vill12 = 5μ)

  • Roughness Comparison (comparison of each 5μ)

    JIS1994 Value (Ra)

    Roughness Comparison (comparison of each 5μ)

Unprecedented Crack Resistance

The film structure of Vill12 is overwhelmingly crack resistant in comparison to standard hard anodizing.

  • Crack Resistance Comparison

    1 hour @ 400℃

    Crack Resistance Comparison

    Virtually no cracks were seen after 1 hour of thermal treatment at 400℃ due to superb heat resistance.

Vill12 Properties Chart

Material Film Thickness (μm) Standard Hardness Film Characteristics Remarks
Recommended Limit (HV) Hardness Generation Capabilities Corrosion Resistance
AC2A・B 3 5 200 The material’s surface is rough, and surface cavities are visible after anodizing treatment.
AC4C 10 30 450 Good film forming properties and surface roughness compared to other minerals.
AC7A・B 3 30 450 Relatively good film compared to other minerals.
AC8A 3 5 250 Superb strength and wear resistance makes it the perfect material for engine pistons. (good anodizing properties)
ADC6 10 30 450 Good film generation compared with other die cast treatments.
ADC12 3 5 250 Effect of additional element hinders thick film. Silicon and release agent easily left behind, causing excessive color variations.
Material Film Thickness (μm)
Recommended Limit
AC2A・B 3 5
AC4C 10 30
AC7A・B 3 30
AC8A 3 5
ADC6 10 30
ADC12 3 5
Material Standard Hardness
(HV)
AC2A・B 200
AC4C 450
AC7A・B 450
AC8A 250
ADC6 450
ADC12 250
Material Film Characteristics
Hardness Generation Capabilities
AC2A・B
AC4C
AC7A・B
AC8A
ADC6
ADC12
Material Film Characteristics
Corrosion Resistance
AC2A・B
AC4C
AC7A・B
AC8A
ADC6
ADC12
Material Remarks
AC2A・B The material’s surface is rough, and surface cavities are visible after anodizing treatment.
AC4C Good film forming properties and surface roughness compared to other minerals.
AC7A・B Relatively good film compared to other minerals.
AC8A Superb strength and wear resistance makes it the perfect material for engine pistons. (good anodizing properties)
ADC6 Good film generation compared with other die cast treatments.
ADC12 Effect of additional element hinders thick film. Silicon and release agent easily left behind, causing excessive color variations.

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