Page 1665 - MiSUMi 2025

[Materials]
Types and Apparent Colors of Surface Treatment

Q Types of Surface Treatment
Vickers Layer Applicable
Name Hardness Thickness Example Purpose, Features Reference
(HV) (μm) Materials
Thin ·Antirust, low price.
Zinc Plating － 3～20 Steel Plate Wire ·Poor appearance. －
Chromate Plating － 1～ 2 Steel Plate Work ·Antirust, low price.
Bolts and Nuts
·Fit for mass production.
· Poor appearance, however, －
Bright Chromate － 1～ 2 Steel − works instead of nickel plating.
Trivalent 1～ 2 Steel Bolts and Nuts ·Antirust, low price.
Chromate － ·Do not contain hexavalent chrome. －
·Improvement of corrosion resistance and decoration · Copper base plating as appropriate.
Nickel Plating － － · Nickel Plating has more corrosion · Not applicable to deep
Steel resistance in the atmosphere. indentations.
Class 1 Plating 500 5～20 Copper − ·Better appearance than Class 3 plating. ·MaterialUBuffUUPlatingUBuff
Class 3 Plating Brass − ·MaterialUPlating
Satin Finish ·Fatigue resistance.
Plating － － ·Minor flaws remain inconspicuous. ·MaterialUSatin finishUPlating
· Approx.10 times more expensive
Steel than nickel plating.
Electroless Stainless Parts Unsuitable ·Easy film thickness control.
Nickel Plating 500 Steel for Nickel Plating ·High corrosion resistance, abrasion
Copper
Specifiable resistance. －
Aluminum ·Give Conductivity to Non-Metals
up to Alloy Parts hardened · Same as the features of
Kanigen Plating 1000 Glass after Plating electroless nickel plating.
Plastic
·Can be hardened by heat treatment after plating.
·Appearance with gloss · Nickel base plating
Chrome Plating － － ·Good corrosion resistance as appropriate.
·Not applicable to deep
· Sliding chrome plating surfaces
are easy to stick together. indentations.
Class 1 Plating 500 5～20 Steel − ·Better appearance than Class 3 plating. ·MaterialUBuffUUPlatingUBuff
Class 3 Plating Copper − ·MaterialUPlating
Brass
Satin Finish ·Fatigue resistance. ·MaterialUSatin finishUPlating
Plating － － ·Minor flaws remain inconspicuous.
Hard 1000 10～30 Cylinder Liners ·Excellent abrasion resistance. ·MaterialUPlating (Class 3
Chrome Plating ·More expensive than other chrome plating. Plating)
Black Oxide Steel Bolts ·Base coating. ·General Black Oxide
Nuts
·Appearance (with gloss).
(Blackening) － － Instruments ·Rusts more easily than Tufftride
Low Temperature Steel Items requiring high precision, ·Long term antirust performance. · Low-Temperature Preliminary
Black Chrome － 1～ 2 Copper items requiring higher corrosion ·High corrosion resistance. Treatment. No thermal effect
on raw material. Parts coupled
Plating Stainless Steel resistance than blackening. ·Ultra thin film. with plastic matter, rubber, etc.
Clear － 3～ 5 ·Corrosion and abrasion · Some anodize pieces are
Anodize Aluminum − resistance. colored through fine holes in
·No electric conductivity.
Alloy
the hard, oxidized film formed
Black － 5～10 ·Heat Resistance on the surface.
Q Apparent Colors of Surface Treatment
Bright Chromate Trivalent Chromate Electroless Nickel Plating Hard Chrome Plating

Black Oxide Anodize (Clear) Anodize (Black)

B-020