ASTM B888-B 888M-24 电连接器或弹簧触头制造用铜合金带材标准规范

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Designation: B888/B888M −24
Standard Speciﬁcation for
Copper Alloy Strip for Use in Manufacture of Electrical
Connectors or Spring Contacts
1
This standard is issued under the ﬁxed designation B888/B888M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 This speciﬁcation covers the requirements for copper
alloy strip for use in the manufacture of electrical connectors or
spring contacts produced from one of the following Copper
Alloy UNS Nos.:
2
C14530, C15100, C15500, C17000,
C17200, C17410, C17450, C17460, C17500, C17510,
C19002, C19010, C19015, C19025, C19210, C19400,
C19500, C19700, C23000, C26000, C40810, C40850,
C40860, C42200, C42500, C42520, C42600, C50580,
C50780, C51000, C51080, C51100, C51180, C51980, C52100,
C52180, C52480, C63800, C64725, C65400, C68800,
C70250, C70260, C70265, C70310, C70350, C75200, and
C76200.
1.2 The requirements for the other copper alloys such as
copper-nickel-tin spinodal, UNS C72650, C72700, and
C72900, shall be as prescribed in the current edition of
Speciﬁcation B740.
1.3 Units—The values stated in either SI units or inch-
pound units are to be regarded separately as standard. The
values stated in each system may not necessarily be exact
equivalents; therefore, each system shall be used independently
of the other. Combining values from the two systems may
result in non-conformance with the standard.
1.4 The following safety hazard caveat pertains only to the
test methods described in this speciﬁcation. 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 environ-
mental practices and determine the applicability of regulatory
limitations prior to use.
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
3
B193 Test Method for Resistivity of Electrical Conductor
Materials
B248 Speciﬁcation for General Requirements for Wrought
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
Bar
B248M Speciﬁcation for General Requirements for Wrought
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
Bar (Metric)
B601 Classiﬁcation for Temper Designations for Copper and
Copper Alloys—Wrought and Cast
B740 Speciﬁcation for Copper-Nickel-Tin Spinodal Alloy
Strip
B820 Test Method for Bend Test for Determining the Form-
ability of Copper and Copper Alloy Strip
B846 Terminology for Copper and Copper Alloys
B950 Guide for Editorial Procedures and Form of Product
Speciﬁcations for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Ma-
terials
E54 Test Methods for Chemical Analysis of Special Brasses
and Bronzes (Withdrawn 2002)
4
E62 Test Methods for Chemical Analysis of Copper and
Copper Alloys (Photometric Methods) (Withdrawn 2010)
4
E75 Test Methods for Chemical Analysis of Copper-Nickel
and Copper-Nickel-Zinc Alloys (Withdrawn 2010)
4
E193 Speciﬁcation for Laboratory Glass Micropipets (With-
drawn 2024)
4
E478 Test Methods for Chemical Analysis of Copper Alloys
E527 Practice for Numbering Metals and Alloys in the
1
This speciﬁcation is under the jurisdiction of Committee B05 on Copper and
Copper Alloys and is the direct responsibility of Subcommittee B05.01 on Plate,
Sheet, and Strip.
Current edition approved July 1, 2024. Published July 2024. Originally approved
in 1998. Last previous edition approved in 2019 as B888/B888M – 19. DOI:
10.1520/B0888_B0888M-24.
2
The UNS system for copper and copper alloys (see Practice E527) 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.
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at www.astm.org/contact. For Annual Book of
ASTM Standards volume information, refer to the standard’s Document Summary
page on the ASTM website.
4
The last approved version of this historical standard is referenced on
www.astm.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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.
1

Uniﬁed Numbering System (UNS)
E1004 Test Method for Determining Electrical Conductivity
Using the Electromagnetic (Eddy Current) Method
2.2 ISO Standards:
5
ISO 4744 Copper and Copper Alloys—Determination of
Chromium Content—Flame Atomic Absorption Spectro-
metric Method
ISO 7602 Copper and Copper Alloys—Determination of
Tellurium Content
3. Terminology
3.1 Deﬁnitions—For deﬁnition of terms related to copper
and copper alloys, refer to Terminology B846.
4. General Requirements
4.1 For product furnished under this speciﬁcation in English
units, the following sections of Speciﬁcation B248 constitute a
part of this speciﬁcation. For product furnished under this
speciﬁcation in the SI units, the following sections of Speciﬁ-
cation B248M constitute a part of this speciﬁcation.
4.1.1 Terminology
4.1.2 Materials and Manufacture
4.1.3 Dimensions, Weights, and Permissible Variations
4.1.4 Workmanship, Finish, and Appearance
4.1.5 Sampling
4.1.6 Number of Tests and Retests
4.1.7 Specimen Preparation
4.1.8 Test Methods
4.1.9 Signiﬁcance of Numerical Limits
4.1.10 Certiﬁcation
4.1.11 Test Reports
4.1.12 Packaging and Package Marking
4.2 In addition, when a section with a title identical to that
referenced in 4.1 above, appears in this speciﬁcation, it
contains additional requirements which supplement those ap-
pearing in Speciﬁcations B248 or B248M.
5. Classiﬁcation
5.1 Product produced to this speciﬁcation is classiﬁed as
strip material to be used for spring contact or electrical and
electronic connector applications only.
6. Ordering Information
6.1 Include the following speciﬁed choices when placing
orders for product under this speciﬁcation, as applicable:
6.1.1 ASTM designation and year of issue;
6.1.2 Copper Alloy UNS No.;
6.1.3 Temper (Section 9);
6.1.4 Dimensions, thickness, width, edges (Section 11);
6.1.5 How furnished: in coils wound in traverse, pancake, or
welded-pancake style;
6.1.5.1 For coils wound in pancake style: with or without
interleaf paper;
6.1.6 Quantity: total weight;
6.1.7 Temper (Section 8).
6.2 The following options are available and, when required
shall be speciﬁed at the time of placing the order:
6.2.1 Heat identiﬁcation or traceability details;
6.2.2 Type of edge;
6.2.3 Identiﬁcation marking (Section 22);
6.2.4 Certiﬁcation (Section 20);
6.2.5 Test report (Section 21);
6.2.6 Special packaging reporting;
6.2.6.1 Number of cuts per master coil;
6.2.6.2 OD, ID size and weight of each coil.
6.3 Electrical resistivity or any other physical and electrical
properties (See Table X1.1).
7. Materials and Manufacture
7.1 Materials:
7.1.1 The material of manufacture shall be a cast bar, cake,
or slab of such purity and soundness as to be suitable for
processing into the products to the product speciﬁcation listed
in Section 1.
7.2 Manufacture—The product shall be produced by either
hot- or cold-working, or both. 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 in Table 2.
7.3 Edges—The edges shall be slit or rolled edges as
speciﬁed by the buyer. Slit edges shall be furnished unless
otherwise speciﬁed or agreed upon between the purchaser and
supplier or manufacturer.
8. Chemical Composition
8.1 The material shall conform to the chemical composition
requirements in Table 1 for the Copper Alloy UNS No.
speciﬁed in the ordering information.
8.1.1 Results of analysis on a check sample shall conform to
the composition requirements within the permitted analytical
variance speciﬁed in Table 1.
8.2 These composition limits do not preclude the presence
of other elements. By agreement between the manufacturer and
purchaser, limits may be established and analysis required for
unnamed elements.
8.3 For alloys in which copper is listed as “remainder,”
copper is the difference between the sum of results of all
elements determined and 100 %. When all elements in Table 1
are determined, the sum of results shall be as indicated by the
applicable footnote (C, E, H or I) or column entry for C14530,
C15100 and C15500.
8.4 For alloys in which zinc is listed as “remainder,” either
copper or zinc may be taken as the difference between the sum
of results of all other elements determined and 100 %. When
all elements in Table 1 are determined, the sum of the results
shall be as indicated by the applicable footnote (E or I).
9. Temper
9.1 Tempers, as deﬁned in Classiﬁcation B601, available
under this speciﬁcation are as follows:
5
Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
4th Floor, New York, NY 10036, http://www.ansi.org.
B888/B888M − 24
2

TABLE 1 Chemical Requirements

Elements Composition, %

Copper

Alloy

UNS No. Copper

Alum

-inum

Beryll

-ium Cobalt Iron Lead

Magnes-

ium

Man-

ganese Nickel

Phos-

phorus Tin Zinc

Chro-

mium

Zirco-

nium Silicon Silver

Tellur

-ium Other

C14530 99.90

min

... ... ... ... ... ... ... ... 0.001–

0.010

0.003–

0.023

... ... ... ... ... 0.003–

0.023

...

C15100

99.80

min

... ... ... ... ... ... ... ... ... ... ... ... 0.05–

0.15

... ... ... ...

C15500 99.75

min

... ... ... ... ... 0.08–

0.13

... ... 0.040–

0.080

... ... ... ... ... 0.027–

0.10

... ...

C17000

remainder

0.20

max

1.60–

1.85

0.20

min

... ... ... ... ... ... ... ... ... ... 0.20

max

... ... ...

C17200

remainder

0.20

max

1.80–

2.00

0.20

min

... ... ... ... ... ... ... ... ... ... 0.20

max

... ... ...

C17410

remainder

0.20

max

0.15–

0.50

0.35–

0.6

0.20

max

... ... ... ... ... ... ... ... ... 0.20

max

... ... ...

C17450

remainder

0.20

max

0.15–

0.50

... 0.20

max

... ... ... 0.50–

1.0

... 0.25

max

... ... 0.50 %

max

0.20

max

... ... ...

C17460

remainder

0.20

max

0.15–

0.50

... 0.20

max

... ... ... 1.0–

1.4

... 0.25

max

... ... 0.50 %

max

0.20

max

... ... ...

C17500

remainder

0.20

max

0.4–

0.7

2.4–

2.7

0.10

max

... ... ... ... ... ... ... ... ... 0.20

max

... ... ...

C17510

remainder

0.20

max

0.2–

0.6

0.3

max

0.10

max

... ... ... 1.4–

2.2

... ... ... ... ... 0.20

max

... ... ...

C19002

remainder

... ... ... 0.10 0.05 0.01 ... 1.4–

1.7

0.05 0.02–

0.30

0.04–

0.35

... 0.005–

0.05

0.20–

0.35

0.02–

0.50

... ...

C19010

remainder

... ... ... ... ... ... ... 0.8–

1.8

0.01–

0.05

... ... ... ... 0.15–

0.35

... ... ...

C19015

remainder

... ... ... ... ... 0.02–

0.15

... 0.50–

2.4

0.02–

0.20

... ... ... ... 0.10–

0.40

... ... ...

C19025

remainder

... ... ... 0.10

max

... ... ... 0.8–

1.2

0.03–

0.07

0.7–

1.1

0.20

max

... ... ... ... ... ...

C19210

remainder ... ... ... 0.05–

0.15

... ... ... ... 0.025–

0.04

... ... ... ... ... ... ... ...

C19400

97.0 min ... ... ... 2.1–

2.6

0.03

max

... ... ... 0.015–

0.15

... 0.05–

0.20

... ... ... ... ... ...

C19500

96.0 min 0.02

max

... 0.30–

1.3

1.0–

2.0

0.02

max

... ... ... 0.01–

0.35

0.10–

1.0

0.20

max

... ... ... ... ... ...

C19700

remainder ... ... 0.05

max

0.30–

1.2

0.05

max

0.01–

0.20

0.05

max

0.05

max

0.10–

0.40

0.20

max

0.20

max

... ... ... ... ... ...

C23000

84.0-86.0 ... ... ... 0.05

max

0.05

max

... ... ... ... ... remainder ... ... ... ... ... ...

C26000

68.5-71.5 ... ... ... 0.05

max

0.07

max

... ... ... ... ... remainder ... ... ... ... ... ...

C40810

94.5-96.5 ... ... ... 0.08–

0.12

0.05

max

... ... 0.11–

0.20

0.028–

0.04

1.8–

2.2

remainder ... ... ... ... ... ...

C40850

94.5-96.5 ... ... ... 0.05–

0.20

0.05

max

... ... 0.05–

0.20

0.01–

0.20

2.6–

4.0

remainder ... ... ... ... ... ...

C40860

94.0-96.0 ... ... ... 0.01–

0.05

max

... ... 0.05–

0.20

0.02–

0.04

1.7–

2.3

remainder ... ... ... ... ... ...

C42200

86.0-89.0 ... ... ... 0.05

max

0.05

max

... ... ... 0.35

max

0.8–

1.4

remainder ... ... ... ... ... ...

C42500

87.0-90.0 ... ... ... 0.05

max

0.05

max

... ... ... 0.35

max

1.5–

3.0

remainder ... ... ... ... ... ...

C42520

88.0-91.0 ... ... ... 0.05–

0.20

0.05

max

... ... 0.05–

0.20

0.01–

0.20

1.5–

3.0

remainder ... ... ... ... ... ...

C42600

87.0-90.0

... ... ... 0.05–

0.20

0.05

max

... ... 0.05–

0.20

0.01–

0.20

2.5–

4.0

remainder ... ... ... ... ... ...

C50580

remainder ... ... ... 0.05–

0.20

0.05

max

... ... 0.05–

0.20

0.01–

0.35

1.0–

1.7

0.30

max

... ... ... ... ... ...

C50780

remainder ... ... ... 0.05–

0.20

0.05

max

... ... 0.05–

0.20

0.01–

0.35

1.7–

2.3

0.30

max

... ... ... ... ... ...

B888/B888M − 24

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ASTM B888/B888M-2024 Standard Specification for Copper Alloy Strip for Use in Manufacture of Electrical Connectors or Spring Contacts 电连接器或弹簧触头制造用铜合金带材标准规范

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