ASTM B545-22
Standard Specification for Electrodeposited Coatings of Tin

Standard No.

ASTM B545-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM B545-22

Scope

1.1 This specification covers the requirements for electrodeposited (electroplated) coatings of tin applied to metallic articles. Tin coatings are used to provide a low contactresistance surface, to protect against corrosion (see 1.2), to facilitate soldering, to provide anti-galling properties, and to be a stopoff coating in the nitriding of high-strength steels. 1.2 Some corrosion can be expected from tin coatings exposed outdoors. In normal indoor exposure, tin is protective on iron, steel, nickel, copper, and their alloys. Corrosion can be expected at discontinuities in the coating (such as pores) due to galvanic couples formed between the tin and the underlying metal through the discontinuities, especially in humid atmospheres. Porosity increases as the coating thickness decreases, so that minimum thicknesses must be specified for each application. Parts coated with tin can be assembled safely in contact with iron and steel, tin-coated aluminum, yellow chromated zinc, cadmium, and solder coatings. (See X5.1 for oxidation and corrosion properties.) 1.3 This specification applies to electroplated coatings of not less than 99 % tin (except where deliberately alloyed for special purposes, as stated in X6.3) obtained from any of the available tin electroplating processes (see 4.3). 1.4 This specification does not apply to hot-dipped tin or other non-electrodeposited coating; it also does not apply to mill products. For mill products, refer to Specifications A623 or A623M. 1.5 Units—The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.6 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. 1.7 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.

ASTM B545-22 Referenced Document

• ASTM A623 Standard Specification for Tin Mill Products, General Requirements
• ASTM A623M Standard Specification for Tin Mill Products, General Requirements [Metric]
• ASTM B183 Standard Practice for Preparation of Low-Carbon Steel for Electroplating
• ASTM B242 Standard Guide for Preparation of High-Carbon Steel for Electroplating
• ASTM B246 Standard Specification for Tinned Hard-Drawn and Medium-Hard-Drawn Copper Wire for Electrical Purposes
• ASTM B281 Standard Practice for Preparation of Copper and Copper-Base Alloys for Electroplating and Conversion Coatings
• ASTM B320 Standard Practice for Preparation of Iron Castings for Electroplating
• ASTM B322 Standard Guide for Cleaning Metals Prior to Electroplating
• ASTM B374 Standard Terminology Relating to Electroplating
• ASTM B487 Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
• ASTM B499 Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
• ASTM B504 Standard Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method*， 2023-05-01 Update
• ASTM B507 Standard Practice for Design of Articles to Be Electroplated on Racks
• ASTM B542 Standard Terminology Relating to Electrical Contacts and Their Use
• ASTM B558 Standard Practice for Preparation of Nickel Alloys for Electroplating
• ASTM B567 Standard Test Method for Measurement of Coating Thickness by the Beta Backscatter Method*， 2024-04-22 Update
• ASTM B568 Standard Test Method for Measurement of Coating Thickness by X-Ray Spectrometry
• ASTM B571 Standard Practice for Qualitative Adhesion Testing of Metallic Coatings
• ASTM B602 Standard Test Method for Attribute Sampling of Metallic and Inorganic Coatings
• ASTM B659 Standard Guide for Measuring Thickness of Metallic and Inorganic Coatings
• ASTM B678 Standard Test Method for Solderability of Metallic-Coated Products
• ASTM B697 Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings
• ASTM B762 Standard Test Method of Variables Sampling of Metallic and Inorganic Coatings
• ASTM B765 Standard Guide for Selection of Porosity Tests for Electrodeposits and Related Metallic Coatings
• ASTM B809 Standard Test Method for Porosity in Metallic Coatings by Humid Sulfur Vapor ("Flowers-of-Sulfur")*， 2024-04-22 Update
• ASTM B849 Standard Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement
• ASTM B850 Standard Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement
• ASTM D3951 Standard Practice for Commercial Packaging

ASTM B545-22 history

• 2022 ASTM B545-22 Standard Specification for Electrodeposited Coatings of Tin
• 2021 ASTM B545-13(2021) Standard Specification for Electrodeposited Coatings of Tin
• 2013 ASTM B545-13 Standard Specification for Electrodeposited Coatings of Tin
• 1997 ASTM B545-97(2009) Standard Specification for Electrodeposited Coatings of Tin
• 1997 ASTM B545-97(2004)e1 Standard Specification for Electrodeposited Coatings of Tin
• 1997 ASTM B545-97e1 Standard Specification for Electrodeposited Coatings of Tin
• 1997 ASTM B545-97 Standard Specification for Electrodeposited Coatings of Tin