ASTM B605-22 - 15.11.2022
 
1. Scope

1.1?This specification covers the requirements for electrodeposited tin-nickel alloy coatings from aqueous solutions intended for the corrosion protection of fabricated articles of iron, steel, zinc-base alloys, copper, and copper alloys. The composition of the alloy remains constant at 65/35 tin-nickel in spite of wide fluctuations in both composition and operating conditions. The composition corresponds quite closely to an equiatomic ratio, and the process favors the co-deposition of tin and nickel atoms at identical rates.

1.2?This specification does not apply to sheet, strip, or wire in the fabricated form. It also may not be applicable to threaded articles having basic major diameters up to and including 19 mm because of the nonuniformity of thickness that can be expected on fine threads. However, a decision to use the coating on such components may be made by the purchaser.

1.3?UnitsThe values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

B504-90(2023)

Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method

B507-14(2021)

Standard Practice for Design of Articles to Be Electroplated on Racks

B322-99(2020)e1

Standard Guide for Cleaning Metals Prior to Electroplating (Includes all amendments and changes 12/7/2020).

D3951-18(2023)

Standard Practice for Commercial Packaging

B850-98(2022)

Standard Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement

B849-02(2023)

Standard Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement

B809-95(2018)

Standard Test Method for Porosity in Metallic Coatings by Humid Sulfur Vapor (“Flowers-of-Sulfur”)

B765-03(2023)

Standard Guide for Selection of Porosity and Gross Defect Tests for Electrodeposits and Related Metallic Coatings

B762-21

Standard Guide of Variables Sampling of Metallic and Inorganic Coatings

B697-88(2021)

Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings

B634-14a(2021)

Standard Specification for Electrodeposited Coatings of Rhodium for Engineering Use (Includes all amendments and changes 10/27/2021).

B602-21

Standard Guide for Attribute Sampling of Metallic and Inorganic Coatings

B571-23

Standard Practice for Qualitative Adhesion Testing of Metallic Coatings

B568-98(2021)

Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry

B567-98(2021)

Standard Test Method for Measurement of Coating Thickness by the Beta Backscatter Method

B281-88(2019)e1

Standard Practice for Preparation of Copper and Copper-Base Alloys for Electroplating and Conversion Coatings (Includes all amendments and changes 5/14/2019).

B252-92(2020)

Standard Guide for Preparation of Zinc Alloy Die Castings for Electroplating and Conversion Coatings

B246-15(2021)

Standard Specification for Tinned Hard-Drawn and Medium-Hard-Drawn Copper Wire for Electrical Purposes

B242-99(2020)

Standard Guide for Preparation of High-Carbon Steel for Electroplating

B499-09(2021)e1

Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals (Includes all amendments and changes 5/18/2021).

B183-18(2022)

Standard Practice for Preparation of Low-Carbon Steel for Electroplating

B487-20

Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section

B374-21

Standard Terminology Relating to Electroplating