ASTM B570-22

Standard Specification for Copper-Beryllium Alloy Forgings and Extrusions (UNS Nos. C17000 and C17200)

ABSTRACT
This specification establishes the requirements for copper-beryllium alloy (UNS nos. C17000 and C17200) forgings and extrusions. The material of manufacture shall be cast or wrought billet of C17000 or C17200 of such purity and soundness as to be suitable for processing into the products prescribed. The product shall be manufactured by hot working and heat treating as may be necessary to meet the properties specified. The product composition shall conform to the chemical requirements specified. The standard temper designations available under this specification and as prescribed in Classification B 601 are solution heat-treated TB00 (A) and precipitation heat-treated TF00 (AT). The product in the TF00 (precipitation-hardened (AT)) condition shall have a microstructure with a minimum of second phase (beta) constituents. When present, beta shall be fine and well dispersed. The product furnished under this specification shall conform to the prescribed hardness requirements. Tensile properties shall be determined in accordance with test methods E 8.
SCOPE
1.1 This specification establishes the requirements for copper-beryllium alloy forgings and extrusions produced from Copper Alloy UNS Nos. C17000 and C17200.
Note 1: Requirements for copper-beryllium alloy rod and bar appear in Specification B196/B196M (Section 2).  
1.2 Unless otherwise specified, Copper Alloy UNS No. C17200 shall be the alloy furnished whenever Specification B570 is specified without an 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 that are provided for information only and are not considered standard.  
1.4 The following safety hazard caveat pertains only to the test method(s) described in this 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 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.

General Information

• Status: Published
• Publication Date: 30-Sep-2022
• ICS: 77.150.30 - Copper products
• Technical Committee: B05 - Copper and Copper Alloys
• Drafting Committee: B05.02 - Rod, Bar, Wire, Shapes and Forgings

Standards Content (Sample)

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.
Designation:B570 −22
Standard Specification for
Copper-Beryllium Alloy Forgings and Extrusions (UNS Nos.
1
C17000 and C17200)
This standard is issued under the fixed designation B570; 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* B196/B196M SpecificationforCopper-BerylliumAlloyRod
and Bar
1.1 This specification establishes the requirements for
B249/B249M Specification for General Requirements for
copper-beryllium alloy forgings and extrusions produced from
Wrought Copper and Copper-Alloy Rod, Bar, Shapes and
Copper Alloy UNS Nos. C17000 and C17200.
Forgings
NOTE 1—Requirements for copper-beryllium alloy rod and bar appear
B601 Classification forTemper Designations for Copper and
in Specification B196/B196M (Section 2).
Copper Alloys—Wrought and Cast
1.2 Unless otherwise specified, Copper Alloy UNS No.
B846 Terminology for Copper and Copper Alloys
C17200 shall be the alloy furnished whenever Specification
E8/E8M Test Methods for Tension Testing of Metallic Ma-
B570 is specified without an alloy designation.
terials
E18 Test Methods for Rockwell Hardness of Metallic Ma-
1.3 Units—The values stated in inch-pound units are to be
terials
regarded as standard. The values given in parentheses are
E112 Test Methods for Determining Average Grain Size
mathematical conversions to SI units that are provided for
information only and are not considered standard.
3. General Requirements
1.4 The following safety hazard caveat pertains only to the
3.1 The following sections of Specification B249/B249M
test method(s) described in this specification:
constitute a part of this specification.
1.4.1 This standard does not purport to address all of the
3.1.1 Terminology
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3.1.2 Materials and Manufacture
priate safety, health, and environmental practices and deter- 3.1.3 Sampling
mine the applicability of regulatory limitations prior to use.
3.1.4 Number of Tests and Retests
3.1.5 Specimen Preparation
1.5 This international standard was developed in accor-
3.1.6 Test Methods
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the 3.1.7 Significance of Numerical Limits
Development of International Standards, Guides and Recom- 3.1.8 Inspection
mendations issued by the World Trade Organization Technical
3.1.9 Rejection and Rehearing
Barriers to Trade (TBT) Committee.
3.1.10 Certification
3.1.11 Test Report
2. Referenced Documents
3.1.12 Packaging and Package Marking
2
2.1 ASTM Standards:
3.2 In addition, when a section with a title identical to that
B194 Specification for Copper-BerylliumAlloy Plate, Sheet,
referenced in 3.1, above, appears in this specification, it
Strip, and Rolled Bar
contains additional requirements that supplement those appear-
ing in Specification B249/B249M.
1
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
4. Terminology
and CopperAlloys and is the direct responsibility of Subcommittee B05.02 on Rod,
Bar, Wire, Shapes and Forgings.
4.1 Definitions:
Current edition approved Oct. 1, 2022. Published October 2022. Originally
4.1.1 For definitions of terms related to copper and copper
approved in 1972. Last previous edition approved in 2016 as B570–16. DOI:
10.1520/B0570-22.
alloys, refer to Terminology B846.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.1.2 forging, n—a metal part worked to a predetermined
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
shape by one or more such processes as hammering, upsetting,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. pressing, rolling, and so forth.
*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
1

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B570−22
TABLE 1 Chemical Requirements
5. Ordering Information
Composition, %
5.1 Include the following specified choices when placing
Copper Alloy Copper Alloy
orders for products under this specification, as applicable:
Element
UNS No. C17000 UNS No. C17200
5.1.1 ASTM designation and year of issue;
Beryllium 1.60–1.85 1.80–2.00
5.1.2 Copper Alloy UNS No. designation;
Additive elements:
Nickel + cobalt, min 0.20 0.20
5.1.3 Temper
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B570 − 16 B570 − 22
Standard Specification for
Copper-Beryllium Alloy Forgings and Extrusions (UNS Nos.
1
C17000 and C17200) Forgings and Extrusions
This standard is issued under the fixed designation B570; 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 establishes the requirements for copper-beryllium alloy forgings and extrusions produced from the following
alloys.Copper Alloy UNS
Nominal % Composition
Copper Alloy UNS No. Beryllium
C17000 1.7
C17200 1.9
Nos. C17000 and C17200.
NOTE 1—Requirements for copper-beryllium alloy rod and bar appear in Specification B196/B196M (Section 2).
1.2 Unless otherwise specified, Copper Alloy UNS No. C17200 shall be the alloy furnished whenever Specification B570 is
specified without anyan 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 whichthat are provided for information only and are not considered standard.
1.4 The following safety hazard caveat pertains only to the test method(s) described in this 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 safety, health, and healthenvironmental practices and to determine the
applicability of regulatory limitations prior to use.
1.5 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
2
2.1 ASTM Standards:
1
This specification is under the jurisdiction of ASTM Committee B05 on Copper and Copper Alloys and is the direct responsibility of Subcommittee B05.02 on Rod, Bar,
Wire, Shapes and Forgings.
Current edition approved Oct. 1, 2016Oct. 1, 2022. Published November 2016October 2022. Originally approved in 1972. Last previous edition approved in 20102016
as B570–06(2010).B570–16. DOI: 10.1520/B0570-16.10.1520/B0570-22.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’sstandard’s Document Summary page on the ASTM website.
*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
1

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B570 − 22
B194 Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled Bar
B196/B196M Specification for Copper-Beryllium Alloy Rod and Bar
B249/B249M Specification for General Requirements for Wrought Copper and Copper-Alloy Rod, Bar, Shapes and Forgings
B601 Classification for Temper Designations for Copper and Copper Alloys—Wrought and Cast
B846 Terminology for Copper and Copper Alloys
E8/E8M Test Methods for Tension Testing of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E112 Test Methods for Determining Average Grain Size
3. General Requirements
3.1 The following sections of Specification B249/B249M formconstitute a part of this specification.
3.1.1 Terminology,Terminology
3.1.2 Materials and Manufacture,Manufacture
3.1.3 Sampling,Sampling
3.1.4 Number of Tests and Retests,Retests
3.1.5 Sample Preparation,Specimen Preparation
3.1.6 Test Methods,Methods
3.1.7 Significance of Numerical Limits,Limits
3.1.8 Inspection,Inspection
3.1.9 Rejection and Rehearing,Rehearing
3.1.10 Certification,Certification
3.1.11 Mill Test Report,Report
3.1.12 Packaging, Marking, Shipping and Preservation.Packaging and Package Marking
3.2 In addition, when a section with a title identical to that referenced in 3.1, above, appears in this specification, it contains
additional requirements that supplement those appearing in Specification B249/B249M.
4. Terminology
4.1 Definitions:
4.1.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846.
4.1.2 forging, n—a metal part worked to a predeterm
...