This specification covers the requirements for electrodeposited tin coatings applied to metallic articles to provide a low contact resistance surface, to protect against corrosion, to facilitate soldering, to provide anti-galling properties, and to be a stop-off coating in the nitriding of high-strength steels. The values given in parentheses are for information only. This abstract is a brief summary of the referenced standard.
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The values given in parentheses are for information only.
For mill products, refer to Specifications A or B554. Historical Version s - view previous versions of standard. In normal indoor exposure, tin is protective on iron, steel, nickel, copper, and their alloys.
Parts coated b54 tin can be assembled safely in contact with iron and steel, tin-coated aluminum, yellow chromated zinc, cadmium, and solder coatings. This abstract is a brief summary of the referenced standard. Nonmagnetic Coatings on Magnetic Basis Metals.
ASTM B | General Metal Finishing
The surface appearance types are matte tin electrodeposits, bright tin electrodeposits, and flow-brightened electrodeposits. Link to Active This link will always route to the current Active version of the standard.
Coatings shall be grouped into six service classes, which is based on the minimum thickness and severity of service required for the coating, and three surface appearance types, which is based on the type electroplating process employed.
It is the responsibility of the user of this standard to establish appropriate safety and health axtm and determine the applicability of regulatory limitations prior to use.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
It is informational only and not asstm official part of the standard; the full text of the standard itself must be referred to for its use and application. 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.
Coatings shall be sampled, tested and conform accordingly to specified requirements as to appearance, purity, local and mean thickness, integrity including gross defects, mechanical damage, and porosityadhesion, solderability, and hydrogen embrittlement relief. Porosity increases as the coating thickness decreases, so that minimum thicknesses must be specified for each application.
This specification does v545 cover hot-dipped tin or other non-electrodeposited coatings, and mill products. 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. Tin coatings are used to provide a low contact-resistance surface, to protect against corrosion see 1. This specification covers the requirements for electrodeposited tin coatings applied to metallic articles to provide a low contact resistance surface, to protect against corrosion, to facilitate soldering, to provide anti-galling properties, and to be a stop-off coating in the nitriding of high-strength steels.