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Designation: B 248 – 01

Standard Speciﬁcation for

General Requirements for Wrought Copper and Copper-

Alloy Plate, Sheet, Strip, and Rolled Bar

This standard is issued under the ﬁxed designation B 248; the number immediately following the designation indicates the year of

original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A

superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

This standard has been approved for use by agencies of the Department of Defense.

NOTE—Referenced Documents were editorially corrected in November 2003.

1. Scope*

1.1 This speciﬁcation covers a group of general require-

ments 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: B 36/B 36M, B 96/B 96M, B 103/B 103M,

B 121/B 121M, B 122/B 122M, B 152/B 152M, B 169/

B 169M, B 194, B 291, B 422, B 465, B 534, B 591, B 592,

B 694, B 740, B 747, and B 768.

NOTE 1—A complete metric companion to Speciﬁcation B 248 has

been developed—B 248M; therefore no metric equivalents are presented

in this speciﬁcation.

2. Referenced Documents

2.1 The following documents of the issue in effect on date

of material purchase form a part of this speciﬁcation to the

extent referenced herein:

2.2 ASTM Standards:

B 36/B 36M Speciﬁcation for Brass Plate, Sheet, Strip, and

Rolled Bar

B 96/B 96M Speciﬁcation for Copper-Silicon Alloy Plate,

Sheet, Strip, and Rolled Bar for General Purposes and

Pressure Vessels

B 103/B 103M Speciﬁcation for Phosphor Bronze Plate,

Sheet, Strip, and Rolled Bar

B 121/B 121M Speciﬁcation for Leaded Brass Plate, Sheet,

Strip, and Rolled Bar

B 122/B 122M Speciﬁcation for Copper-Nickel-Tin Alloy,

Copper-Nickel-Zinc Alloy (Nickel Silver), and Copper-

Nickel Alloy Plate, Sheet, Strip, and Rolled Bar

B 152/B 152M Speciﬁcation for Copper Sheet, Strip, Plate,

and Rolled Bar

B 169/B 169M Speciﬁcation for Aluminum Bronze Sheet,

Strip, and Rolled Bar

B 193 Test Method for Resistivity of Electrical Conductor

Materials

B 194 Speciﬁcation for Copper-Beryllium Alloy Plate,

Sheet, Strip, and Rolled Bar

B 291 Speciﬁcation for Copper-Zinc-Manganese Alloy

(Manganese Brass) Sheet and Strip

B 422 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

B 465 Speciﬁcation for Copper-Iron Alloy Plate, Sheet,

Strip, and Rolled Bar

B 534 Speciﬁcation for Copper-Cobalt-Beryllium Alloy and

Copper-Nickel-Beryllium Alloy Plate, Sheet, Strip, and

Rolled Bar

B 591 Speciﬁcation for Copper-Zinc-Tin and Copper-Zinc-

Tin-Iron-Nickel Alloys Plate, Sheet, Strip, and Rolled Bar

B 592 Speciﬁcation for Copper-Zinc-Aluminum-Cobalt Al-

loy, Copper-Zinc-Tin-Iron Alloy Plate, Sheet, Strip, and

Rolled Bar

B 694 Speciﬁcation for Copper, Copper-Alloy, and Copper-

Clad Stainless Steel (CCS) and Copper-Clad Alloy Steel

(CAS) Sheet and Strip for Electrical Cable Shielding

B 740 Speciﬁcation for Copper-Nickel-Tin Spinodal Alloy

Strip

B 747 Speciﬁcation for Copper-Zirconium Alloy Sheet and

Strip

B 768 Speciﬁcation for Copper-Cobalt-Beryllium Alloy and

Copper-Nickel-Beryllium Alloy Strip and Sheet

This speciﬁcation is under the jurisdiction of the ASTM Committee B05 on

Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.01

on Plate, Sheet, and Strip.

Current edition approved May 10, 2001. Published September 2001. Originally

published as B 248 – 51 T. Last previous edition B 248 – 98.

The UNS system for copper and copper alloys (see Practice E 527) is a simple

expansion of the former standard designation system accomplished by the addition

of a preﬁx “C” and a suffix “00”. The suffix can be used to accommodate

composition variations of the base alloy.

Annual Book of ASTM Standards, Vol 02.01.

Annual Book of ASTM Standards, Vol 02.03.

Discontinued. See 1992 Annual Book of ASTM Standards, Vol 03.05.

*A Summary of Changes section appears at the end of this standard.

Provided by IHS under license with ASTM

Not for Resale

No reproduction or networking permitted without license from IHS

--`-`-`,,`,,`,`,,`---

E 8 Test Methods for Tension Testing of Metallic Materials

E 18 Test Methods for Rockwell Hardness and Rockwell

Superﬁcial Hardness of Metallic Materials

E 29 Practice for Using Signiﬁcant Digits in Test Data to

Determine Conformance with Speciﬁcations

E 50 Practices for Apparatus, Reagents, and Safety Consid-

erations for Chemical Analysis of Metals, Ores, and

Related Materials

E 53 Test Method for Determination of Copper in Unal-

loyed Copper by Gravimetry

E 54 Test Methods for Chemical Analysis of Special

Brasses and Bronzes

E 62 Test Methods for Chemical Analysis of Copper and

Copper Alloys (Photometric Method)

E 75 Test Methods for Chemical Analysis of Copper-Nickel

and Copper-Nickel-Zinc Alloys

E 106 Test Methods for Chemical Analysis of Copper-

Beryllium Alloys

E 112 Test Methods for Determining the Average Grain

Size

E 118 Test Methods for Chemical Analysis of Copper-

Chromium Alloys

E 121 Test Methods for Chemical Analysis of Copper-

Tellurium Alloys

E 255 Practice for Sampling Copper and Copper Alloys for

the Determination of Chemical Composition

E 478 Test Methods for Chemical Analysis of Copper

Alloys

E 527 Practice for Numbering Metals and Alloys (UNS)

3. Terminology

3.1 Deﬁnitions:

3.1.1 blank—a piece of ﬂat product intended for subsequent

fabrication by forming, bending, cupping, drawing, hot press-

ing, and so forth.

3.1.2 coil—a length of the product wound into a series of

connected turns. The unqualiﬁed term “coil” as applied to “ﬂat

product” usually refers to a coil in which the product is spirally

wound, with the successive layers on top of one another.

(Sometimes called a “roll”.)

3.1.2.1 level or traverse wound—a coil in which the turns

are positioned into layers parallel to the axis of the coil such

that successive turns in a given layer are next to one another.

3.1.2.2 level or traverse wound on a reel or spool—a coil in

which the turns are positioned into layers on a reel or spool

parallel to the axis of the reel or spool such that successive

turns in a given layer are next to one another.

3.1.3 lengths—straight pieces of the product.

3.1.3.1 ends—straight pieces, shorter than the nominal

length, left over after cutting the product into mill lengths,

stock lengths, or speciﬁc lengths. They are subject to minimum

length and maximum weight requirements.

3.1.3.2 mill—straight lengths, including ends, that can be

conveniently manufactured in the mills. Full-length pieces are

usually 8, 10, or 12 ft and subject to established length

tolerances.

3.1.3.3 multiple—straight lengths of integral multiples of a

base length, with suitable allowance for cutting if and as

speciﬁed.

3.1.3.4 speciﬁc—straight lengths that are uniform in length,

as speciﬁed, and subject to established length tolerances.

3.1.3.5 speciﬁc with ends—speciﬁc lengths, including ends.

3.1.3.6 stock—straight lengths that are mill cut and stored in

advance of orders. They are usually 8, 10, or 12 ft and subject

to established length tolerances.

3.1.3.7 stock with ends—stock lengths, including ends.

3.1.4 plate—a wrought ﬂat product over 0.188 in. thick and

over 12 in. wide, in straight lengths or coils (rolls).

3.1.5 reel or spool—a cylindrical device that has a rim at

each end and an axial hole for a shaft or spindle, and on which

the product is wound to facilitate handling and shipping.

3.1.6 rolled bar—a rolled ﬂat product over 0.188 in. thick

and up to and including 12 in. wide, with sheared, sawed, or

machined edges, in straight lengths or coils (rolls).

3.1.7 sheet—a rolled ﬂat product up to and including 0.188

in. thick and over 24 in. wide, in straight lengths or coils (rolls).

3.1.8 strip—a rolled ﬂat product, other than ﬂat wire, up to

and including 0.188 in. thick, in straight lengths, coils (rolls) or

traverse wound on reels or spools:

3.1.8.1 with slit, or sheared edges in widths up to 24 in.

inclusive.

3.1.8.2 with ﬁnished drawn or rolled edges, in widths over

⁄

to 12 in. inclusive.

4. Materials and Manufacture

4.1 Materials—The material shall be of such quality and

purity that the ﬁnished product shall have the properties and

characteristics prescribed in the applicable product speciﬁca-

tion listed in Section 1.

4.2 Manufacture—The material shall be produced by either

hot- or cold-working operations. It shall be ﬁnished, unless

otherwise speciﬁed, by such hot working, cold working,

annealing, or heat treatment as may be necessary to meet the

properties speciﬁed.

4.3 Edges—The edges shall be slit, sheared, sawed, or

rolled edges, as speciﬁed. Slit edges shall be furnished unless

otherwise speciﬁed or agreed between purchaser and supplier

or manufacturer. See 5.6 for edge descriptions and tolerances.

5. Dimensions, Weights, and Permissible Variations

5.1 General—For the purpose of determining conformance

with the dimensional requirements prescribed in this speciﬁ-

cation, any measured value outside the speciﬁed limiting

values for any dimension may be cause for rejection.

NOTE 2—Blank spaces in the tolerance tables indicate either that the

material is not available or that no tolerances have been established.

5.2 Thickness—The standard method of specifying thick-

ness shall be in decimal fractions of an inch. For material 0.021

in. and under in thickness, it is recommended that the nominal

Annual Book of ASTM Standards, Vol 03.01.

Annual Book of ASTM Standards, Vol 14.02.

Annual Book of ASTM Standards, Vol 03.05.

Annual Book of ASTM Standards, Vol 03.06.

Annual Book of ASTM Standards, Vol 01.01.

B248–01

Provided by IHS under license with ASTM

Not for Resale

No reproduction or networking permitted without license from IHS

--`-`-`,,`,,`,`,,`---

thicknesses be stated not closer than the nearest half-

thousandth. (For example, specify 0.006 or 0.0065 in., but not

0.0063 in.) For material over 0.021 in. in thickness, it is

recommended that the nominal thicknesses be stated not closer

than the nearest thousandth. (For example, specify 0.128 or

0.129 in., but not 0.1285 in.) A list of preferred thicknesses is

shown in Appendix X1. The thickness tolerances shall be those

shown in Tables 1-3 for the product speciﬁcation indicated:

5.2.1 Table 1—Thickness tolerances applicable to Speciﬁ-

cations B 36/B 36M, B 121/B 121M, B 152/B 152M, B 291,

B 465, B 591 (Copper Alloy UNS No. C41100), B 592, and

B 747.

5.2.2 Table 2—Thickness tolerances applicable to Speciﬁ-

cations B 96/B 96M, B 103/B 103M, B 122/B 122M, B 169/

B 169M, B 194, B 422, B 534, B 591, B 740, and B 768

(except Copper Alloy UNS No. C41100).

5.2.3 Table 3—Special thickness tolerances applicable to

Copper Alloy UNS No. C72500 when ordered to Speciﬁcation

B 122/B 122M, and to Speciﬁcations B 194, B 534, B 740, and

B 768 as noted in the table.

5.3 Width—The width tolerances shall be those shown in

Tables 4-6, depending on the type of edge required (see

5.3.15.3.25.3.3):

5.3.1 Table 4—Width tolerances for slit metal and slit metal

with rolled edges.

5.3.2 Table 5—Width tolerances for square-sheared metal.

5.3.3 Table 6—Width tolerances for sawed metal.

5.4 Length—The material shall be furnished in coils or

straight lengths of plate, sheet, strip, or rolled bar as speciﬁed.

The length tolerances for straight lengths shall be those shown

in Tables 7-9, depending on the method of cutting required (see

5.4.1-5.4.3). When ends are permitted, the length and quantity

of the ends shall be in accordance with the schedule in Table 8.

5.4.1 Table 7—Length tolerances, for straight lengths.

5.4.2 Table 8—Schedule of minimum length and maximum

weight of ends for lengths with ends.

5.4.3 Table 9—Length tolerances for square-sheared metal.

5.4.4 Table 10—Length tolerances for sawed metal.

5.5 Straightness—The straightness tolerances, which are

the maximum edgewise curvature (depth of arc) in any 72-in.

portion of the total length, shall be those shown in Tables

11-13, depending on the type of edge required.

5.5.1 Table 11—Straightness tolerances for metal as slit, or

as slit and straightened, or as slit and edge-rolled, or metal with

drawn edges.

5.5.2 Table 12—Straightness tolerances for square-sheared

metal.

5.5.3 Table 13—Straightness tolerances for sawed metal.

5.6 Edges—When rolled edges are required, they may be

produced by either rolling or drawing to one of the following

speciﬁed edge contours:

5.6.1 Square Edges (Square Corners)—Edges shall have

square corners with essentially 90° angles and with a maxi-

mum corner radius as prescribed in Table 14.

5.6.2 Rounded Corners—Edges shall have rounded corners

as shown in Fig. 1 with a radius as prescribed in Table 15.

5.6.3 Rounded Edges—Edges shall be rounded as shown in

Fig. 2 with a radius as prescribed in Table 16.

5.6.4 Full-Rounded Edges—Edges shall be full rounded as

shown in Fig. 3 with a radius as prescribed in Table 17.

5.7 Weight Tolerances for Hot-Rolled Material:

TABLE 1 Thickness Tolerances

(Applicable to Speciﬁcations B 36/B 36M, B 121/B 121M, B 152/B 152M, B 291, B 465, B 591 (Copper Alloy UNS No. C41100), B 592, and

B 747)

Thickness, in.

Thickness Tolerances, plus and minus,

in.

Strip Sheet

8 in. and

Under in

Width

Over8to12

in., incl, in

Width

Over 12 to 14

in., incl, in

Width

Over 14 to 20

in., incl, in

Width

Over 20 to 24

in., incl, in

Width

Over 24 to 28

in., incl, in

Width

Over 28 to 36

in., incl, in

Width

Over 36 to 48

in., incl, in

Width

Over 48 to 60

in., incl, in

Width

0.004 and under 0.0003 0.0006 0.0006 . . . . . . . . . . . . . . . . . .

Over 0.004 to 0.006, incl 0.0004 0.0008 0.0008 0.0013 . . . . . . . . . . . . . . .

Over 0.006 to 0.009, incl 0.0006 0.0010 0.0010 0.0015 . . . . . . . . . . . . . . .

Over 0.009 to 0.013, incl 0.0008 0.0013 0.0013 0.0018 0.0025 0.0025 0.003 0.0035 0.004

Over 0.013 to 0.017, incl 0.0010 0.0015 0.0015 0.002 0.0025 0.0025 0.003 0.0035 0.0045

Over 0.017 to 0.021, incl 0.0013 0.0018 0.0018 0.002 0.003 0.003 0.0035 0.004 0.005

Over 0.021 to 0.026, incl 0.0015 0.002 0.002 0.0025 0.003 0.003 0.0035 0.004 0.005

Over 0.026 to 0.037, incl 0.002 0.002 0.002 0.0025 0.0035 0.0035 0.004 0.005 0.006

Over 0.037 to 0.050, incl 0.002 0.0025 0.0025 0.003 0.004 0.004 0.005 0.006 0.007

Over 0.050 to 0.073, incl 0.0025 0.003 0.003 0.0035 0.005 0.005 0.006 0.007 0.008

Over 0.073 to 0.130, incl 0.003 0.0035 0.0035 0.004 0.006 0.006 0.007 0.008 0.010

Over 0.130 to 0.188, incl 0.0035 0.004 0.004 0.0045 0.007 0.007 0.008 0.010 0.012

Rolled Bar Plate

Over 0.188 to 0.205, incl 0.0035 0.004 0.004 0.0045 0.007 0.007 0.008 0.010 0.012

Over 0.205 to 0.300, incl 0.004 0.0045 0.0045 0.005 0.009 0.009 0.010 0.012 0.014

Over 0.300 to 0.500, incl 0.0045 0.005 0.005 0.006 0.012 0.012 0.013 0.015 0.018

Over 0.500 to 0.750, incl 0.0055 0.007 0.007 0.009 0.015 0.015 0.017 0.019 0.023

Over 0.750 to 1.00, incl 0.007 0.009 0.009 0.011 0.018 0.018 0.021 0.024 0.029

Over 1.00 to 1.50, incl 0.022 0.022 0.022 0.022 0.022 0.022 0.025 0.029 0.036

Over 1.50 to 2.00, incl 0.026 0.026 0.026 0.026 0.026 0.026 0.030 0.036 0.044

When tolerances are speciﬁed as all plus or all minus, double the values given.

B248–01

Provided by IHS under license with ASTM

Not for Resale

No reproduction or networking permitted without license from IHS

--`-`-`,,`,,`,`,,`---

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