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Standard Specification for Refined Silver
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.
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