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Description of ASTM-B650 2008ASTM B650 - 95(2008)Standard Specification for Electrodeposited Engineering Chromium Coatings on Ferrous SubstratesActive Standard ASTM B650 | Developed by Subcommittee: B08.03 Book of Standards Volume: 02.05 ASTM B650Abstract This specification covers the requirements for electrodeposited chromium coatings (sometimes referred to as functional or hard chromium) applied to ferrous alloy substrates for engineering applications, particularly for increasing wear, abrasion, fretting, and corrosion resistance; for reducing galling or seizing, and static and kinetic friction; and for building up undersize or worn parts. Coatings shall be classified according to their thickness. Coatings shall be sampled, tested, and shall conform accordingly to specified requirements as to appearance, stress relief and hydrogen embrittlement treatment, thickness (to measured either by microscopical, magnetic, coulometric, or X-ray spectrometry method), adhesion (to be assessed either by bend, file, heat and quench, or push test), porosity (to be examined either by ferroxyl, neutral salt spray, or copper sulfate test), workmanship, and packaging. This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. 1. Scope 1.1 This specification covers the requirements for electrodeposited chromium coatings applied to ferrous alloys for engineering applications. 1.2 Electrodeposited engineering chromium, which is sometimes called 'functional' or 'hard' chromium, is usually applied directly to the basis metal and is much thicker than decorative chromium. Engineering chromium is used for the following: 1.2.1 To increase wear and abrasion resistance, 1.2.2 To increase fretting resistance, 1.2.3 To reduce static and kinetic friction, 1.2.4 To reduce galling or seizing, or both, for various metal combinations, 1.2.5 To increase corrosion resistance, and 1.2.6 To build up undersize or worn parts. 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 and health practices and determine the applicability of regulatory limitations prior to use.
ASTM Standards B117 Practice for Operating Salt Spray (Fog) Apparatus B177 Guide for Engineering Chromium Electroplating B183 Practice for Preparation of Low-Carbon Steel for Electroplating B242 Guide for Preparation of High-Carbon Steel for Electroplating B320 Practice for Preparation of Iron Castings for Electroplating B374 Terminology Relating to Electroplating B487 Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section B499 Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals B504 Test Method for Measurement of Thickness of Metallic Coatings by the Coulometric Method B507 Practice for Design of Articles to Be Electroplated on Racks B568 Test Method for Measurement of Coating Thickness by X-Ray Spectrometry B571 Practice for Qualitative Adhesion Testing of Metallic Coatings B602 Test Method for Attribute Sampling of Metallic and Inorganic Coatings B697 Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings B762 Test Method of Variables Sampling of Metallic and Inorganic Coatings B849 Specification for Pre-Treatments of Iron or Steel for Reducing Risk of Hydrogen Embrittlement B850 Guide for Post-Coating Treatments of Steel for Reducing the Risk of Hydrogen Embrittlement D3951 Practice for Commercial Packaging E8 Test Methods for Tension Testing of Metallic Materials F1459 Test Method for Determination of the Susceptibility of Metallic Materials to Hydrogen Gas Embrittlement (HGE) Other Standard MIL-S-13165 Shot Peening of Metal Parts Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.Keywords chromium plating standard; steel; ICS Code ICS Number Code 25.220.40 (Metallic coatings) DOI: 10.1520/B0650-95R08 ASTM International is a member of CrossRef. ASTM B650This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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