ASTM B413-97a

    Standard Specification for Refined Silver

    SUPERSEDED (see Active link, below)


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    1. Scope

    1.1 This specification covers refined silver in cast bar form in three grades as follows:

    1.1.1 Grade 99.90 (UNS P07020)-Silver having a minimum fineness of 999.0 commonly referred to as "commercial bar" or "bullion."

    1.1.2 Grade 99.95 (UNS P07015)-Silver having a minimum fineness of 999.5.

    1.1.3 Grade 99.99 (UNS P07010)-A premium grade having a minimum fineness of 999.9.

    1.2 The values stated in inch-pound units are to be regarded as the standard.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E378 Test Method for Spectrographic Analysis of Silver by the Powder Technique


    ICS Code

    ICS Number Code 77.120.99 (Other non-ferrous metals and their alloys)

    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/B0413-97A

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