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Doplňujúce informácie

ASTM B740-21

Standard Specification for Copper-Nickel-Tin Spinodal Alloy Strip

NORMA vydaná dňa 1.10.2021

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Informácie o norme:

Označenie normy: ASTM B740-21
Dátum vydania normy: 1.10.2021
Kód tovaru: NS-1041731
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

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Anotácia textu normy ASTM B740-21 :

This specification establishes the requirements for copper-nickel-tin spinodal alloy strips with Copper Alloy UNS Nos. C72700, C72900, and C72650. Tempers are available as follows: TB00 (solution heat treated), TD01 to TD12 (solution heat treated and cold worked), TX00 or TS01 to TS12 (spinodal hardened), or TM00 to TM08 (mill hardened). Materials shall be prepared and tested accordingly to examine their conformance to mechanical (tensile and yield strength, elongation, ductility, and bend ratio), chemical composition, and grain size requirements. Retests shall be performed on any lot of material that fails to adhere to specified requirements due to inadequate heat treatment, or fails to meet bend test requirements.

Keywords:

age hardening, copper-nickel-tin, spinodal, strip, UNS C72650, UNS C72700, UNS C72900,, ICS Number Code 77.150.30 (Copper products)

Doplňujúce informácie

1. Scope

1.1?This specification establishes requirements for copper-nickel-tin alloy strip for Copper Alloy UNS Nos. C72700, C72900, and C72650 in the following alloys:

Copper Alloy UNS No.

Nominal Composition Weight %

Copper

Nickel

Tin

C72700

C72900

C72650

87.5

7.5

1.2?UnitsThe 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?The following safety hazard caveat pertains only to the test method(s) described in this specification.

1.3.1?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4?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.

2. Referenced Documents

B846-19a	Standard Terminology for Copper and Copper Alloys (Includes all amendments and changes 8/8/2019).
E3-11(2017)	Standard Guide for Preparation of Metallographic Specimens
E8/E8M-24	Standard Test Methods for Tension Testing of Metallic Materials
E75-76(1996)	Standard Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys
E290-22	Standard Test Methods for Bend Testing of Material for Ductility
E478-08(2017)	Standard Test Methods for Chemical Analysis of Copper Alloys
B820-23	Standard Test Method for Bend Test for Determining the Formability of Copper and Copper Alloy Strip
B248-22	Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
B598-14	Standard Practice for Determining Offset Yield Strength in Tension for Copper Alloys
B601-18a	Standard Classification for Temper Designations for Copper and Copper Alloys´Wrought and Cast (Includes all amendments and changes 10/24/2018).

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