ASTM B570-96

Standard Specification for Copper-Beryllium Alloy (UNS No. C17000 and C17200) Forgings and Extrusions

SCOPE
1.1 This specification establishes the requirements for copper-beryllium alloy forgings and extrusions produced from the following alloys.Copper Alloy UNS No. Nominal % Composition BerylliumC170001.7 C172001.9
Note 1—Requirements for copper-beryllium alloy rod and bar appear in Specification B 196/B 196M (Section 2).
1.2 Unless otherwise specified, Copper Alloy UNS No. C17200 shall be the alloy furnished whenever Specification B 570 is specified without any alloy designation.
1.3 Units—The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units, which are for information only and are not considered standard.
1.4 The following hazard statement pertains only to the test method portions of the specification:
1.4.1 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Oct-2001
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.02 - Rod, Bar, Wire, Shapes and Forgings

Relations

• Replaced By: ASTM B570-01 - Standard Specification for Copper-Beryllium Alloy (UNS No. C17000 and C17200) Forgings and Extrusions
• Effective Date: 10-Oct-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn. Contact ASTM International (www.astm.org) for the latest information.
Designation: B 570 – 96
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Specification for
Copper-Beryllium Alloy (UNS No. C17000 and C17200)
1
Forgings and Extrusions
This standard is issued under the fixed designation B 570; 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.
1. Scope 3.1.2 extrusion—a uniform metal shape, long in relation to
its cross-sectional dimensions, produced by forcing a suitably
1.1 This specification establishes the requirements for
preheated billet or preform through an orifice (die) of the
copper-beryllium alloy forgings and extrusions produced from
desired cross section. Extrusions generally are furnished in
the following alloys.
straight lengths.
Nominal % Composition
3.1.3 forging—a metal part worked to a predetermined
Copper Alloy UNS No. Beryllium
C17000 1.7
shape by one or more such processes as hammering, upsetting,
C17200 1.9
pressing, rolling, and so forth.
NOTE 1—Requirements for copper-beryllium alloy rod and bar appear
in Specification B 196 (Section 2). 4. Ordering Information
4.1 Orders for product under this specification shall include
1.2 Unless otherwise specified, Copper Alloy UNS No.
the following information:
C17200 shall be the alloy furnished whenever Specification
4.1.1 ASTM designation and year of issue (for example,
B 570 is specified without any alloy designation.
B570 – 96).
1.3 The values stated in inch-pound units are to be regarded
4.1.2 Quantity: number of pieces or pounds,
as the standard. SI values given in parentheses are for infor-
4.1.3 Copper Alloy UNS No. (Section 1),
mation only.
4.1.4 Temper (Section 7) or condition (Section 11),
2. Referenced Documents
4.1.5 Drawing showing the shape, dimensions, and toler-
ances, if required,
2.1 ASTM Standards:
B 194 Specification for Copper-Beryllium Alloy Plate, 4.1.6 If an extrusion: the length (or mass) required, straight-
2
Sheet, Strip, and Rolled Bar ness as required,
B 196 Specification for Copper-Beryllium Alloy Rod and 4.2 The following are options and should be included in the
2
Bar contract or purchase order, when required:
B 249 Specification for General Requirements for Wrought 4.2.1 Tension tests (Section 10),
2
Copper and Copper-Alloy Rod, Bar, Shapes, and Forgings 4.2.2 Special tests such as grain size,
B 601 Practice for Temper Designations for Copper and 4.2.3 Finish (see Section 14),
2
Copper Alloys—Wrought and Cast 4.2.4 Grain size (see Section 8), and
2
4.2.5 When material is ordered for agencies of the U.S.
B 846 Terminology for Copper and Copper Alloys
3
E 3 Methods of Preparation of Metallographic Specimens Government.
3
E 8 Test Methods for Tension Testing of Metallic Materials
5. Material and Manufacture
E 18 Test Methods for Rockwell Hardness and Rockwell
3
5.1 Material:
Superficial Hardness of Metallic Materials
3
5.1.1 The material of manufacture shall be cast or wrought
E 112 Test Methods for Determining Average Grain Size
billet of C17000 or C17200 of such purity and soundness as to
3. Terminology
be suitable for processing into the products prescribed herein.
3.1 Definitions: 5.1.2 The product heat number shall appear on the Certifi-
cation or Test Report.
3.1.1 See Terminology B 846 for additional definitions.
5.2 Manufacture:
5.2.1 The product shall be manufactured by hot working
1
This specification is under the jurisdiction of ASTM Committee B-5 on Copper
and heat treating as may be necessary to meet the properties
and Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes, and Forgings.
specified herein.
Current edition approved April 10, 1996. Published June 1996. Originally
published as B 570 – 72. Last previous edition B 570 – 89.
6. Chemical Composition
2
Annual Book of ASTM Standards, Vol 02.01.
3
6.1 The product composition shall conform to the chemical
Annual Book of ASTM Standards, Vol 03.01.
1

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B 570
requirements shown in Table 1. 11.2 Precipitation Heat Treatment—Temper TF00 (AT)—
6.2 These composition limits do not preclude the presence The product shall be heat treated to a uniform temperature in
of other elements. Limits may be established and analysis the range from 600 to 700°F (316 to 370°C) for a minimum of
required for unnamed elements by agreement between the 2 to 3 h and then air-cooled. This is the heat treatment for the
manufacturer and the purchaser. acceptance tests shown in Table 3.
6.3 Copper, given as remainder, is the difference betwee
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