ASTM标准材料标准,表面处理标准

1、TECHNICAL SPECIFICATIONSMATERIALS AND RECOMMENDED PROCESSESALUMINUMBRASS / COPPERSTAINLESS STEELSTEEL / STEEL ALLOYSALUMINUMAnodizeAnodize finishes are intended to provide corrosion protection and abrasion resistance for aluminum and aluminum alloys (Clear, Black).ASTM B 580Chem. Film (Iridite)Chem.

2、 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 449Black Polyurethane E-CoatBlack Polyurethane E-Coat is applied with an electrical current in an immersion process that results in

3、 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 decorativ

4、e.ElectrolessNickelElectroless nickel is a hard coating that provides corrosion protection, wear resistance, electrical conductivity, and consistent thickness.ASTM B 733ElectrolessNickel/T inElectroless nickel/Tin is a bright tin-plating over a nickel coating that provides corrosion protection, elec

5、trical conductivity. Excellent for electronics where solder-ability and RF control are needed.ElectrolyticNickel/T inElectrolytic Nickel/Tin provides corrosion protection and electrical conductivity.Excellent for electronicfasteners and contacts where solder-ability is required.Magni 550 (Dip spin)M

6、agni 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 highlycorrosion resistant barrier. Salt spray protection over 1000 hours is normal, with up to 3000 hours mea

7、sured 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 EtchSpecial etch is a chemical etching process that cleans and brightens most aluminum parts.Back to TopBRASS / COPPERElectrolessNickelE

8、lectroless nickel is a hard coating that provides corrosion protection; wear resistance, electrical conductivity, and consistent thickness.ASTM B 733ElectrolessNickel/T inElectroless Nickel/Tin is a bright tin-plating over a nickel coating that provides corrosion protection, electrical conductivity.

9、 Excellent for electronics where solder-ability is needed.ElectrolyticNickelElectrolytic nickel is a hard coating that provides corrosion protection; wear resistance, electrical conductivity, and bright finish.ASTM B 689ElectrolyticNickel/T inElectrolytic Nickel/Tin provides corrosion protection and

10、 electrical conductivity.Excellent for electronicfasteners and contacts where solder-ability is required.Electrodeposited TinElectrodeposited Tin provides corrosion protection and electrical conductivity.Excellent for electronicfasteners and contacts where solder-ability is required. ASTM B 545Back

11、to TopSTAINLESS STEELPassivatePassivate 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.Back to TopSTEEL & STEEL ALLOYSClean and OilClean and oil is used to clean mill scale and dirt from steel p

12、arts and is followed by a dry to touch oil to protect from corrosion.Black Polyurethane E-CoatBlack 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 pai

13、nts 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.ElectrolessNickelElectroless nickel is a hard coating that provides corrosion protection, wear resist

14、ance, and consistent thickness. ASTM B 733ElectrolyticNickelElectrolytic nickel is a hard coating that provides corrosion protection; wear resistance, and bright finish. ASTM B 689Electrodeposited TinElectrodeposited Tin provides corrosion protection and electrical conductivity.Excellent for electro

15、nicfasteners and contacts where solder-ability is required. ASTM B 545Magni 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 r

16、esistant 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 PlateZinc plating is a widely used coating that

17、 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 633Zinc Cobalt Plus“brZinc cobalt plus is zinc plating that incorporates small amounts of cobalt metals into the plating. A clear hex f

18、ree chromate is applied which is then sealed. This provides excellent corrosion protection. This is a barrel plating process and is available in“ clear " oronly. Meets European ELV standards. ASTM B 840Back to TopTECHNICAL SPECIFICATIONSASTM SPECIFIC A TIONSASTM B-449 SPECIFICATIONSFOR CHROMATE

19、S ON ALUMINUMCLASSCOLORClass 1Yellow to BrownClass 2Colorless to YellowClass 3ColorlessClass 4Light Green to Green (NOT AVAILABLE)Back to TopASTM B-545 SPECIFICATIONSFOR ELECTRODEPOSITED TIN(For use on aluminum, copper, brass, steel substrates)CLASSSERVICE CONDITIONSMIN. THICKNESSClass AMild.0001Cla

20、ss BMild.0002Class CModerate.0003Class DSevere.0005Class EVery Severe.0012 (NOT AVAILABLE)Class FSimilar to Class A.00005Back to TopASTM B-580 SPECIFICATIONSFOR ANODIZING OF ALUMINUM1 TYPECLASSMIN. THICKNESSType BArchitectural Class 1.0007Type CArchitectural Class 2.0004Type DAutomotive Exterior.000

21、3Type EInterior Moderate Abrasion.0002Type FInterior Limited Abrasion.0001Back to TopTYPEASTM B-633 SPECIFICATIONSFOR ZINC PLATING(For use on brass, copper, steel substrates)CLASSCOLORMIN.THICKNESSType IIIFe/Zn 5 SC 1Clear/Colorless Chromate.00019Type IIFe/Zn 5 SC 1Colored Chromate (Yellow, Black, O

22、live Drab).00019Type IIIFe/Zn 8 SC 2Clear/Colorless Chromate.00031Type IIFe/Zn 8 SC 2Colored Chromate.00031(Yellow, Black, Olive Drab)Rack Plate OnlyType IIIFe/Zn 12 SC 3Clear/Colorless Chromate.00047Type IIFe/Zn 12 SC 3Colored Chromate(Yellow, Black, Olive Drab).00047Back to TopASTM B-689 SPECIFICATIONS FORELECTROLYTIC NICKEL (BARREL)(For use on aluminum, brass, copper, and steel substrates)TYPECLASSMIN. THICKNESSType 2Class 5.00019Back to TopASTM B-733 SPECIFICATIONS FORELECTROLESS NICKEL(All Type 4