ASTM B248M-22 - 1.5.2022
 
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