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ASTM B521-19
Standard Specification for Tantalum and Tantalum Alloy Seamless and Welded Tubes
Přeložit název
NORMA vydána dne 1.11.2019
Informace o normě:
Označení normy: ASTM B521-19
Poznámka: NEPLATNÁ
Datum vydání normy: 1.11.2019
Kód zboží: NS-978893
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM B521-19 :
Keywords:
seamless tubing, tantalum, tantalum alloy, tantalum tubes, welded tubing,, ICS Number Code 77.150.99 (Other products of non-ferrous metals)
Doplňující informace
| Significance and Use | ||
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12.1 For the purpose of determining compliance with the specified limits of property requirements, an observed value or a calculated value shall be rounded in accordance with the rounding method of Practice E29. |
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| 1. Scope | ||
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1.1 This specification covers tantalum and tantalum alloy seamless and welded tubes of the following grades: 1.1.1 UNS Grade R05400—Unalloyed tantalum, powder-metallurgy consolidation, 1.1.2 UNS Grade R05200—Unalloyed tantalum, vacuum melted, 1.1.3 UNS Grade R05252—Tantalum + 2.5 % tungsten alloy, vacuum melted. 1.1.4 UNS Grade R05255—Tantalum + 10 % tungsten alloy, vacuum melted. 1.1.5 UNS Grade R05240—Tantalum alloy, 60 % tantalum, 40 % niobium, electron-beam furnace or vacuum arc melt, or both. 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||
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