ASTM 标准材料标准,表面处理标准

ALUMINUM

BRASS / COPPER

STAINLESS STEEL

STEEL / STEEL ALLOYS

ALUMINUM

Anodize

Anodize finishes are intended to provide corrosion

protection and abrasion resistance for aluminum and

aluminum alloys (Clear, Black).

ASTM B 580

Chem. Film or Iridite is primarily used for mild

corrosion protection with low electrical resistance and

also improves paint adhesion on aluminum and

aluminum alloys.

ASTM B 449

Black Polyurethane E-Coat is applied with an electrical

current in an immersion process that results in a very

uniform coating, even on complex parts. The thickness

(0.2 to 1.0 mil) is lower than liquid paints or powder

coat, making it an ideal finish for parts with close

tolerances and threaded parts. Corrosion resistance is

good, chip resistance is excellent, and the black finish

is quite decorative.

Electroless nickel is a hard coating that provides

corrosion protection, wear resistance, electrical

conductivity, and consistent thickness.

ASTM B 733

Electroless nickel/Tin is a bright tin- plating over a

nickel coating that provides corrosion protection,

electrical conductivity. Excellent for electronics where

solder-ability and RF control are needed.

Electrolytic Nickel/Tin provides corrosion protection

and electrical conductivity.

Excellent for electronic

fasteners and contacts where solder- ability is required.

Magni 550 combines an electroplated zinc and

chromate underlayer with an aluminum-rich epoxy

topcoat. The zinc layer provides sacrificial protection of

the substrate and the topcoat creates a highly

Chem. Film

(Iridite)

Black

Polyurethane

E-Coat

Electroless

Nickel

Electroless

Nickel/T

in

Electrolytic

Nickel/T

in

Magni 550

(Dip spin)

corrosion resistant barrier. Salt spray protection over

1000 hours is normal, with up to 3000 hours measured

on some parts. A friction modifier provides low torque

for fastener applications. The color is flat silver/gray.

The cost is about twice that of zinc.

Special Etch

Special etch is a chemical etching process that cleans

and brightens most aluminum parts.

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BRASS / COPPER

Electroless

Nickel

Electroless

Nickel/T

in

Electroless nickel is a hard coating that provides

corrosion protection; wear resistance, electrical

conductivity, and consistent thickness.

ASTM B 733

Electroless Nickel/Tin is a bright tin- plating over a

nickel coating that provides corrosion protection,

electrical conductivity. Excellent for electronics where

solder-ability is needed.

Electrolytic nickel is a hard coating that provides

corrosion protection; wear resistance, electrical

conductivity, and bright finish.

ASTM B 689

Electrolytic Nickel/Tin provides corrosion protection

and electrical conductivity.

Excellent for electronic

fasteners and contacts where solder-ability is required.

Electrolytic

Nickel

Electrolytic

Nickel/T

in

Electrodeposited

Electrodeposited Tin provides corrosion protection and

Tin

electrical conductivity.

Excellent for electronic

fasteners and contacts where solder- ability is required.

ASTM B 545

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STAINLESS STEEL

Passivate

Passivate is a process that removes iron and foreign

metals from the surface of stainless steel to help

prevent oxidation and rust from forming on the

surface.

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STEEL & STEEL ALLOYS

Clean and Oil

Clean and oil is used to clean mill scale and dirt from

steel parts and is followed by a dry to touch oil to

protect from corrosion.

Black Polyurethane E-Coat is applied with an electrical

current in an immersion process that results in a very

uniform coating, even on complex parts. The thickness

(0.2 to 1.0 mil) is lower than liquid paints or powder

coat, making it an ideal finish for parts with close

tolerances and threaded parts. Corrosion resistance is

good, chip resistance

is

excellent, and

the black finish is

quite decorative.

Electroless nickel is a hard coating that provides

corrosion protection, wear resistance, and consistent

thickness.

ASTM B 733

Electrolytic nickel is a hard coating that provides

corrosion protection; wear resistance, and bright finish.

ASTM B 689

Black

Polyurethane

E-Coat

Electroless

Nickel

Electrolytic

Nickel

Electrodeposited

Electrodeposited Tin provides corrosion protection and

Tin

electrical conductivity.

Excellent for electronic

fasteners and contacts where solder- ability is required.

ASTM B 545

Magni 550

(Dip spin)

Magni 550 combines an electroplated zinc and

chromate underlayer with an aluminum- rich epoxy

topcoat. The zinc layer provides sacrificial protection of

the

substrate and

the topcoat creates

a highly corrosion

resistant barrier. Salt spray protection over 1000 hours

is normal, with up to 3000 hours measured on some

parts. A friction modifier provides low torque for

fastener applications. The color is flat silver/gray. The

cost is about twice that of zinc.

Zinc plating is a widely used coating that provides

sacrificial corrosion protection for steel parts. This

coating is applied using either barrel or rack methods

(Clear, yellow, black, or olive drab).

ASTM B 633

Zinc Plate