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Standard Classification of Coppers
Automaticky přeložený název:
Standardní klasifikace poldové
NORMA vydána dne 1.7.2014
Označení normy: ASTM B224-14
Poznámka: NEPLATNÁ
Datum vydání normy: 1.7.2014
Kód zboží: NS-5813
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
classification, coppers, ICS Number Code 77.120.30 (Copper and copper alloys)
Significance and Use | ||||
4.1 This classification lists the types of copper available from refineries or fabricators, or both, defines the common terms used, and gives the characteristics of many of the coppers available. It is useful to the neophyte looking for the appropriate copper for a particular application. |
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1. Scope | ||||
1.1 This is a classification of the various types of copper currently available in refinery shapes and wrought products in commercial quantities. It is not a specification for the various types of copper. 1.2 In this classification, use is made of the standard copper designations in use by the copper industry. 1.3 Although this classification includes certain UNS designations as described in Practice E527, these designations are for cross-reference only and are not requirements. Therefore, in case of conflict, this ASTM classification shall govern. 1.4 This classification does not attempt to differentiate between all compositions that could be termed either coppers or copper-base alloys, but in conformance with general usage in the trade, includes those coppers in which the copper is specified as 99.85 % or more, silver being counted as copper. Note 1: Coppers may contain small amounts of certain elements
intentionally permitted to impart specific properties, without
excessively lowering electrical conductivity. The total copper plus
specific permitted elements is usually specified as 99.85 % or
more. These intentionally permitted elements normally include, but
are not limited to, arsenic, cadmium, chromium, lead, magnesium,
silver, sulfur, tellurium, tin, zinc, and zirconium, plus
deoxidizers, up to specific levels adopted by the International
Standards Organization.
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2. Referenced Documents | ||||
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