ASTM B248M-22

Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)

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STANDARD published on 1.5.2022

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The information about the standard:

Designation standards: ASTM B248M-22
Publication date standards: 1.5.2022
SKU: NS-1058359
The number of pages: 13
Approximate weight : 39 g (0.09 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Copper products

Annotation of standard text ASTM B248M-22 :

This specification establishes the general requirements common to several wrought products including copper and copper-alloy plates, sheets, strips, and rolled bars. The numerical values in this specification are not presented in inch-pound units, but rather, in metric or SI units only. The material for manufacture shall be a cast bar, cake, or slab of such purity and soundness as to be suitable for processing by hot- or cold-working, and annealing to produce a uniform wrought structure in the finished product. The edges shall be slit, sheared, sawed, or rolled, as specified. When rolled edges are required, they may be produced by either rolling or drawing to one of the following specified edge contours: square edges (square corners), rounded corners, rounded edges, and full-rounded edges. Products shall be sampled and prepared, then tested accordingly to examine their conformance to dimensional (thickness, length, width, weight, and straightness), mechanical (tensile and yield strength, Rockwell hardness, and elongation), electrical (resistivity and conductivity), chemical composition, and grain size requirements.

Keywords:

general requirements, plate, general requirements, rolled bar, general requirements, sheet, general requirements, strip, general requirements, wrought copper and copper alloys,, ICS Number Code 77.150.30 (Copper products)

Additional information

Significance and Use

11.1?For the purposes of determining compliance with the specified limits for requirements of the properties listed in the following table and for dimensional tolerances, an observed value or a calculated value shall be rounded as indicated in accordance with the rounding method of Practice E29:

Property	Rounded Unit for Observed or Calculated Value
	?
Chemical composition	nearest unit in the last
Hardness	right-hand significant digit
Electrical resistivity	used in expressing
Electrical conductivity	the limiting value
	?
Tensile strength	nearest 5 MPa
Yield strength	nearest 5 MPa
	?
Elongation:	nearest 1 %
	?
Grain size:	?
Under 0.060 mm	nearest multiple of 0.005 mm
0.060 mm and over	nearest 0.01 mm

1. Scope

1.1?This specification establishes the general requirements common to several wrought product specifications. Unless otherwise specified in the purchase order or in an individual specification, these general requirements shall apply to copper and copper-alloy plate, sheet, strip, and rolled bar supplied under each of the following product specifications issued by ASTM: B36/B36M, B96/B96M, B103/B103M, B121/B121M, B122/B122M, B130, B152/B152M, B169/B169M, B422/B422M, B534, B694, B888/B888M, and B936.2

1.2?UnitsThis specification is the companion specification to inch-pound Specification B248.

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.

2. Referenced Documents

B422-10	Standard Specification for Copper-Aluminum-Silicon-Cobalt Alloy, Copper-Nickel-Silicon-Magnesium Alloy, Copper-Nickel-Silicon Alloy, Copper-Nickel-Aluminum-Magnesium Alloy, and Copper-Nickel-Tin Alloy Sheet and Strip
B465-20	Standard Specification for Copper-Iron Alloy Plate, Sheet, Strip, and Rolled Bar
B534-20	Standard Specification for Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B591-20a	Standard Specification for Copper-Zinc-Tin and Copper-Zinc-Tin-Iron-Nickel Alloys Plate, Sheet, Strip, and Rolled Bar (Includes all amendments and changes 10/8/2020).
B152/B152M-19	Standard Specification for Copper Sheet, Strip, Plate, and Rolled Bar
B169/B169M-20	Standard Specification for Aluminum Bronze Sheet, Strip, and Rolled Bar
B193-20	Standard Test Method for Resistivity of Electrical Conductor Materials
B194-22	Standard Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B248-22	Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
B694-19	Standard Specification for Copper, Copper-Alloy, Copper-Clad Bronze (CCB), Copper-Clad Stainless Steel (CCS), and Copper-Clad Alloy Steel (CAS) Sheet and Strip for Electrical Cable Shielding
B740-21	Standard Specification for Copper-Nickel-Tin Spinodal Alloy Strip
B747-20	Standard Specification for Copper-Zirconium Alloy Sheet and Strip
B768-22	Standard Specification for Copper-Cobalt-Beryllium Alloy and Copper-Nickel-Beryllium Alloy Strip and Sheet
B846-19a	Standard Terminology for Copper and Copper Alloys (Includes all amendments and changes 8/8/2019).
B888-12	Standard Specification for Copper Alloy Strip for Use in Manufacture of Electrical Connectors or Spring Contacts
E8/E8M-24	Standard Test Methods for Tension Testing of Metallic Materials
E18-22	Standard Test Methods for Rockwell Hardness of Metallic Materials
E54-80(1996)	Standard Test Methods for Chemical Analysis of Special Brasses and Bronzes (Withdrawn 2002)
E62-89(1996)	Standard Test Methods for Chemical Analysis of Copper and Copper Alloys (Photometric Methods)
E75-76(1996)	Standard Test Methods for Chemical Analysis of Copper-Nickel and Copper-Nickel-Zinc Alloys
E106-83(1996)	Standard Test Methods for Chemical Analysis of Copper-Beryllium Alloys
E112-13(2021)	Standard Test Methods for Determining Average Grain Size
E118-89(1996)	Standard Test Methods for Chemical Analysis of Copper-Chromium Alloys
E121-83(1996)	Standard Test Methods for Chemical Analysis of Copper-Tellurium Alloys
E255-23	Standard Practice for Sampling Copper and Copper Alloys for the Determination of Chemical Composition
E478-08(2017)	Standard Test Methods for Chemical Analysis of Copper Alloys
E527-23	Standard Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
E50-17	Standard Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials
E53-07	Standard Test Method for Determination of Copper in Unalloyed Copper by Gravimetry
B103/B103M-23	Standard Specification for Phosphor Bronze Plate, Sheet, Strip, and Rolled Bar
B121/B121M-23	Standard Specification for Leaded Brass Plate, Sheet, Strip, and Rolled Bar
B96/B96M-20	Standard Specification for Copper-Silicon Alloy Plate, Sheet, Strip, and Rolled Bar for General Purposes and Pressure Vessels
B122/B122M-20	Standard Specification for Copper-Nickel-Tin Alloy, Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-Nickel Alloy Plate, Sheet, Strip, and Rolled Bar
B592-20	Standard Specification for Copper-Zinc-Aluminum-Cobalt Alloy, Copper-Zinc-Tin-Iron Alloy Plate, Sheet, Strip, and Rolled Bar
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
B36/B36M-23	Standard Specification for Brass Plate, Sheet, Strip, And Rolled Bar

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