ASTM_B_605_-_95a_2015.pdf

Designation:B60595a(Reapproved 2015)Standard Specification forElectrodeposited Coatings of Tin-Nickel Alloy1This standard is issued under the fixed designation B605;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers the requirements for electrode-posited tin-nickel alloy coatings from aqueous solutions in-tended for the corrosion protection of fabricated articles ofiron,steel,zinc-base alloys,copper,and copper alloys.Thecomposition of the alloy remains constant at 65/35 tin-nickel inspite of wide fluctuations in both composition and operatingconditions.The composition corresponds quite closely to anequiatomic ratio,and the process favors the co-deposition oftin and nickel atoms at identical rates.1.2 This specification does not apply to sheet,strip,or wirein the fabricated form.It also may not be applicable to threadedarticles having basic major diameters up to and including 19mm because of the nonuniformity of thickness that can beexpected on fine threads.However,a decision to use thecoating on such components may be made by the purchaser.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2B183 Practice for Preparation of Low-Carbon Steel forElectroplatingB242 Guide for Preparation of High-Carbon Steel for Elec-troplatingB246 Specification for Tinned Hard-Drawn and Medium-Hard-Drawn Copper Wire for Electrical PurposesB252 Guide for Preparation of Zinc Alloy Die Castings forElectroplating and Conversion CoatingsB281 Practice for Preparation of Copper and Copper-BaseAlloys for Electroplating and Conversion CoatingsB322 Guide for Cleaning Metals Prior to ElectroplatingB374 Terminology Relating to ElectroplatingB487 Test Method for Measurement of Metal and OxideCoating Thickness by Microscopical Examination ofCross SectionB499 Test Method for Measurement of Coating Thicknessesby the Magnetic Method:Nonmagnetic Coatings onMagnetic Basis MetalsB504 Test Method for Measurement of Thickness of Metal-lic Coatings by the Coulometric MethodB507 Practice for Design of Articles to Be Electroplated onRacksB567 Test Method for Measurement of Coating Thicknessby the Beta Backscatter MethodB568 Test Method for Measurement of Coating Thicknessby X-Ray SpectrometryB571 Practice for Qualitative Adhesion Testing of MetallicCoatingsB602 Test Method for Attribute Sampling of Metallic andInorganic CoatingsB634 Specification for Electrodeposited Coatings of Rho-dium for Engineering UseB697 Guide for Selection of Sampling Plans for Inspectionof Electrodeposited Metallic and Inorganic CoatingsB762 Test Method of Variables Sampling of Metallic andInorganic CoatingsB765 Guide for Selection of Porosity and Gross Defect Testsfor Electrodeposits and Related Metallic CoatingsB809 Test Method for Porosity in Metallic Coatings byHumid Sulfur Vapor(“Flowers-of-Sulfur”)B849 Specification for Pre-Treatments of Iron or Steel forReducing Risk of Hydrogen EmbrittlementB850 Guide for Post-Coating Treatments of Steel for Reduc-ing the Risk of Hydrogen EmbrittlementD3951 Practice for Commercial Packaging3.Terminology3.1 Definitions:3.1.1 Many terms used in this standard are defined inTerminology B374.1This specification is under the jurisdiction of ASTM Committee B08 onMetallic and Inorganic Coatings and is the direct responsibility of SubcommitteeB08.06 on Soft Metals.Current edition approved March 1,2015.Published April 2015.Originallyapproved in 1975.Last previous edition approved in 2009 as B605 95a(2009).DOI:10.1520/B0605-95AR15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.1.2 significant surfacethat portion of a coated articlessurface where the coating is required to meet all the require-ments of the coating specification for that article.Significantsurfaces are those that are essential to the serviceability orfunction of the article,or which can be a source of corrosionproducts or tarnish films that interfere with the function ordesirable appearance of the article.Significant surfaces arethose surfaces that are identified by the purchaser by,forexample,indicating them on an engineering