Aktívna norma | Vydaná: 01.10.2025

ASTM B251/B251M-25

Standard Specification for General Requirements for Wrought Seamless Copper and Copper-Alloy Tube

Dostupné jazyky: Anglicky

Dostupné prevedenie: Online zabezpečené PDF, Norma a Redline - Online zabezpečené PDF, Tlačené, Tlač + redline

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Podrobné informácie

Označenie: ASTM B251/B251M-25

Dátum vydania: 01.10.2025

Stránok: 9

Krajina: Americká technická norma

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Anotácia

This specification covers a group of general requirements for wrought seamless copper and copper alloy tube. The material shall be produced by either hot or cold working operations, or both, and shall be finished, unless otherwise specified, by such cold working and annealing or heat treatment as necessary to meet the properties specified. Dimensional requirements such as wall thickness are specified. The sampling requirements including lot size, portion size, and selection of sample pieces are given. Requirements for chemical analysis, and tension, microscopical examination, Rockwell hardness, grain size, expansion (pin), mercurous nitrate, and electrical resistivity tests are detailed. The material shall conform to the prescribed chemical composition, hardness, electrical resistivity, tensile strength, yield strength, elongation, and grain size.

Keywords:
ICS Number Code 77.150.30 (Copper products)

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