ASTM B422/B422M-22

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

ABSTRACT
This specification establishes the requirements for sheets and strips of copper-aluminum-silicon-cobalt, copper-nickel-silicon-magnesium, copper-nickel-silicon, copper-nickel-aluminum-magnesium, and copper-nickel-tin alloys with Copper Alloy UNS Nos. C19010, C19020, C19025, C63800, C64725, C70250, C70260, and C70265. Materials shall be tested and shall conform to dimensional (thickness, width, length, straightness, and edges), mechanical (tensile and yield strength, elongation, and ductility or formability), electrical resistivity, chemical composition requirements.
SCOPE
1.1 This specification establishes the requirements for2 Copper Alloy UNS Nos. C19002, C19010, C19015, C19020, C19025, C63800, C64725, C70250, C70260, C70265, C70310, and C70350 sheet and strip.  
1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. The values stated in each system may not 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.  
1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification.  
1.3.1 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.  
1.4 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: B05.01 - Plate, Sheet, and Strip

Relations

• Refers: ASTM B846-19a - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Aug-2019
• Refers: ASTM B846-19 - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Jan-2019
• Refers: ASTM B248-12 - Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
• Effective Date: 01-Apr-2012
• Refers: ASTM B248M-12 - Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar (Metric)
• Effective Date: 01-Apr-2012
• Refers: ASTM B846-11a - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Jun-2011
• Refers: ASTM B846-11 - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Jan-2011
• Refers: ASTM B846-09a - Standard Terminology for Copper and Copper Alloys
• Effective Date: 15-Nov-2009
• Refers: ASTM B846-09 - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Nov-2009
• Refers: ASTM B248M-07 - Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar [Metric]
• Effective Date: 01-Oct-2007
• Refers: ASTM B248-07 - Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
• Effective Date: 01-Oct-2007
• Refers: ASTM B846-06a - Standard Terminology for Copper and Copper Alloys
• Effective Date: 15-Nov-2006
• Refers: ASTM B248M-06 - Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar [Metric]
• Effective Date: 01-Oct-2006
• Refers: ASTM B248-06 - Standard Specification for General Requirements for Wrought Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled Bar
• Effective Date: 01-Oct-2006
• Refers: ASTM B846-06 - Standard Terminology for Copper and Copper Alloys
• Effective Date: 15-May-2006
• Refers: ASTM B846-05 - Standard Terminology for Copper and Copper Alloys
• Effective Date: 01-Nov-2005

Overview

ASTM B422/B422M-22 is the internationally recognized standard specification for sheet and strip products manufactured from various copper alloys, including copper-aluminum-silicon-cobalt, copper-nickel-silicon-magnesium, copper-nickel-silicon, copper-nickel-aluminum-magnesium, and copper-nickel-tin. It covers a broad range of copper alloy UNS designations such as C19002, C19010, C19015, C19020, C19025, C63800, C64725, C70250, C70260, C70265, C70310, and C70350. This standard, developed by ASTM Committee B05, outlines the essential requirements for chemical composition, mechanical and electrical properties, dimensional tolerances, and ordering information for these alloys in sheet and strip form.

Key Topics

• Scope of Coverage
  The specification applies to the manufacturing, testing, and certification of copper alloy sheet and strip products in both inch-pound and SI units, applied independently.

• Material and Chemical Requirements
  Each copper alloy covered under this standard must meet specific chemical composition limits, including essential constituents such as copper, nickel, aluminum, silicon, cobalt, magnesium, and tin. The balance and permissible variation of these elements ensure the material's performance attributes.

• Mechanical Properties
  Products must conform to defined mechanical property requirements, such as:

  • Tensile and yield strength
  • Elongation and ductility as negotiated between manufacturer and purchaser
  • Hardness values for reference

• Dimensions and Tolerances
  The standard references ASTM B248/B248M for detailed dimensional and tolerance requirements, covering thickness, width, length, straightness, and edge types.

• Electrical Properties
  Information on the electrical resistivity and conductivity is included for various alloys, supporting their use where electrical performance is critical.

• Ordering Information
  Purchasers must specify several parameters in their orders, including alloy designation, temper, dimensions, quantity, form (sheet or strip), edge type, and applicable tolerances.

• Test Methods and Safety
  The standard provides guidance on mechanical and electrical testing, but users are responsible for ensuring safe practices and compliance with relevant regulations.

Applications

Copper alloy sheet and strip products governed by ASTM B422/B422M-22 are widely used in industries requiring reliable electrical and mechanical performance, excellent formability, and corrosion resistance. Typical applications include:

• Electrical Components
  Terminals, connectors, switch parts, and leadframes, where precise electrical resistivity and conductivity are essential.

• Automotive and Aerospace
  Parts demanding high strength-to-weight ratio, wear resistance, and durability under stress and fatigue conditions.

• Industrial and Electronic Equipment
  Springs, contacts, washers, and precision metal components exposed to repetitive motion or requiring intricate forming.

• General Manufacturing
  Any application where consistent mechanical properties, dimensional accuracy, and alloy-specific characteristics are needed.

Related Standards

For comprehensive guidance, ASTM B422/B422M-22 references and aligns with several related standards:

• ASTM B248/B248M - General requirements for wrought copper and copper-alloy plate, sheet, strip, and rolled bar, including tolerances and additional requirements.
• ASTM B846 - Terminology related to copper and copper alloys, supporting clarity and consistency in standards usage.
• ASTM E527 - Practice for numbering metals and alloys in the Unified Numbering System (UNS).

These related standards provide the framework for quality assurance, terminology, and ordering practices, ensuring interoperability and compliance across industries.

Keywords: copper alloy sheets, copper strip standard, ASTM B422/B422M-22, copper-nickel alloy, mechanical properties, electrical conductivity, alloy UNS numbers, dimensional tolerances, material standards, electrical components, industrial copper alloys.

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:B422/B422M −22
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
This standard is issued under the fixed designation B422/B422M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope* 2. Referenced Documents
2 3
1.1 Thisspecificationestablishestherequirementsfor Cop- 2.1 ASTM Standards:
per Alloy UNS Nos. C19002, C19010, C19015, C19020, B248 Specification for General Requirements for Wrought
C19025, C63800, C64725, C70250, C70260, C70265, Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
C70310, and C70350 sheet and strip. Bar
B248M Specification for General Requirements forWrought
1.2 The values stated in either inch-pound units or SI units
Copper and Copper-Alloy Plate, Sheet, Strip, and Rolled
are to be regarded separately as standard. The values stated in
Bar (Metric)
each system may not be exact equivalents; therefore, each
B846 Terminology for Copper and Copper Alloys
system shall be used independently of the other. Combining
E527 Practice for Numbering Metals and Alloys in the
values from the two systems may result in non-conformance
Unified Numbering System (UNS)
with the standard.
1.3 The following safety hazard caveat pertains only to the 3. General Requirements
test method(s) described in this specification.
3.1 Material furnished to this specification shall be in
1.3.1 This standard does not purport to address all of the
accordance with the applicable requirements of the current
safety concerns, if any, associated with its use. It is the
edition of Specification B248 or B248M.
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter-
4. Terminology
mine the applicability of regulatory limitations prior to use.
4.1 For definitions of terms related to copper and copper
1.4 This international standard was developed in accor-
alloys, refer to Terminology B846.
dance with internationally recognized principles on standard-
5. Ordering Information
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
5.1 Include the following specified choices when placing
mendations issued by the World Trade Organization Technical
orders for product under this specification, as applicable:
Barriers to Trade (TBT) Committee.
5.1.1 ASTM designation and year of issue,
5.1.2 Copper [Alloy] UNS No. designation (Section 1),
5.1.3 Temper (Section 7),
ThisspecificationisunderthejurisdictionofASTMCommitteeB05onCopper
5.1.4 Dimensions (thickness, width, length, if applicable),
andCopperAlloysandisthedirectresponsibilityofSubcommitteeB05.01onPlate,
5.1.5 How furnished (rolls, specific lengths with or without
Sheet, and Strip.
Current edition approved Oct. 1, 2022. Published October 2022. Originally ends, stock lengths with or without ends),
approvedin1965.Lastpreviouseditionapprovedin2017asB422/B422M-17.DOI:
10.1520/B0422_B0422M-22.
2 3
The UNS system for copper and copper alloys (see Practice E527) is a simple For referenced ASTM standards, visit the ASTM website, www.astm.org, or
expansion of the former standard designation system accomplished by the addition contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
of a prefix “C” and a suffix “00.” The suffix can be used to accommodate Standards volume information, refer to the standard’s Document Summary page on
composition variations of the base alloy. 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
B422/B422M−22
5.1.6 Quantity—total weight or total length or number of 8. Mechanical Property Requirements
pieces of each size,
8.1 Copper Alloy UNS No. C63800 is a dispersion-
5.1.7 Form of material (sheet or strip),
strengthened alloy which does not require heat treatment. The
5.1.8 Type of edge, if required (slit, sheared, sawed, square
annealed and rolled tempers shall conform to the tensile
corners,roundedcorners,roundededges,orfull-roundededges
property requirements prescribed in Table 2.
(Subsection 10.6), and
5.1.9 Type of width and straightness tolerances, if required
8.2 Copper Alloy UNS No. C70250 is supplied in a mill-
(slit-metal tolerances, square sheared-metal tolerances, sawed-
hardened, or cold-worked and precipitation heat-treated, or
metal tolerances, straightened or edge-rolled-metal tolerances)
precipitation heat-treated or spinodal heat-treated, ⁄2 hard and
(Section 10).
stress-relievedtempers.The0.2 %offsetyieldstrengthshallbe
5.2 If product is purchased for agencies of the U.S. govern- the standard tests for these tempers and shall conform to the
ment (see the Supplementary Requirement section of Specifi- requirements specified in Table 3.
cation B248 or B248M for additional requirements, if speci-
8.2.1 If ductility or formability requirements are desired,
fied).
they shall be negotiated and agreed upon between the manu-
facturer and purchaser.
6. Chemical Composition
8.3 Copper Alloys UNS No. C70260 and C70265 are
6.1 The material shall conform to the chemical composition
supplied in a mill-hardened temper. The 0.2 % offset yield
requirements in Table 1 for the copper [alloy] UNS No.
strengthshallbethestandardtestforthemill-hardenedtempers
specified in the ordering information.
TM00, TM02, TM03, and TM04 and shall conform to the
6.2 These composition limits do not preclude the presence
requirements specified in Table 4. The tensile strength shall be
ofotherelements.Byagreementbetweenthemanufacturerand
the standard test for the mill-hardened temper TM01 and shall
purchaser, limits may be established and analysis required for
conform to the requirements specified in Table 4.
unnamed elements.
8.3.1 If ductility or formability requirements are desired,
6.3 For alloys in which copper is listed as “remainder,”
they shall be negotiated and agreed upon between the manu-
copper is the difference between the sum of results of all
facturer and purchaser.
elements determined and 100 %. When all elements in Table 1
for Alloys C19002, C19010, C63800, C64725, C70250,
8.4 Copper Alloy UNS Nos. C19020 and C19025 are
C70260, C70265, C70310, and C70350 are determined, the
supplied in cold-worked, stress-relieved temper.These tempers
sum of the results shall be 99.5 % min. When all elements in
shall conform to the tensile strength and elongation require-
Table 1 for Alloy C19025 are determined, the sum of the
ments in Table 7 and Table 5, respectively.
results shall be 99.7 % min. When all elements in Table 1 for
8.4.1 If ductility or formability requirements are desired,
Alloys C19015 and C19020 are determined, the sum of the
they shall be negotiated and agreed upon between the manu-
results shall be 99.8 % min.
facturer and purchaser.
7. Temper
8.5 Copper Alloy UNS No. C19010 is supplied in either
precipitation heat-treated (TM03 to TM08) tempers, or mill-
7.1 The standard tempers for products described in this
specification are given in Tables 2-12. hardened (H01 to H10) tempers. The 0.2 % offset yield
TABLE 1 Chemical Requirements
Composition %
Copper Alloy UNS No.
Element C19002 C19010 C19015 C19020 C19025 C63800 C64725 C70250 C70260 C70265 C70310 C70350
A A A A A A
Nickel 1.4–1.7 0.8–1.8 0.50–2.4 0.50–3.0 0.8–1.2 0.20 max. 1.3–2.7 2.2–4.2 1.0–3.0 1.0–3.0 1.0–4.0 1.0–2.5
Silicon 0.20–0.35 0.15–0.35 0.10–0.40 . . . . . . 1.5–2.1 0.20–0.8 0.25–1.2 0.20–0.7 0.20–0.7 0.08–1.0 0.50–1.2
Lead, max 0.05 . . . . . . . . . . . . 0.05 0.01 0.05 . . . 0.05 0.05 0.05
Iron, max 0.10 . . . . . . . . . 0.10 0.20 0.25 0.20 . . . . . . 0.10 0.20
Zinc 0.04–0.35 . . . . . . . . . 0.20 max 0.8 max 0.50–1.5 1.0 max . . . 0.30 max 2.0 max 1.0 max
Aluminum . . . . . . . . . . . . . . . 2.5–3.1 . . . . . . . . . . . . . . . . . .
B
Copper remainder remainder remainder remainder remainder remainder 95.0 min remainder remainder remainder remainder remainder
Cobalt . . . . . . . . . . . . . . . 0.25–0.55 . . . . . . . . . . . . . . . 1.0–2.0
Manganese, . . . . . 0.10 . 0.10 . . . 0.20
max
Magnesium 0.01 max . . . 0.02–0.15 . . . . . . . . . 0.20 max 0.05–0.30 . . . . . . 0.10 max 0.04 max
Tin 0.02–0.30 . . . . . . 0.30–0.9 0.7–1.1 . . . 0.20–0.8 . . . . . . 0.05–0.8 1.0 max . . .
Phosphorus 0.05 max 0.01–0.05 0.02–0.20 0.01–0.20 0.03–0.07 . . . . . . . . . 0.01 max 0.01 max 0.05 max . . .
Calcium . . . . . . 0.01 max . . . . .
Chromium . . . . . . 0.09 max . . . . .
Silver 0.02–0.50 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.02–0.50 . . .
Zirconium 0.005–0.05 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.005–0.05 . . .
A
Including cobalt.
B
Including silver.
B422/B422M−22
TABLE 2 Tensile Strength Requirements and Approximate Hardness Values for Copper Alloy UNS No. C63800
A
Temper Designation Tensile Strength Elongation in 2 in. Approximate Rockwell Hardness
B C
Code Name ksi MPa [50.8 mm], % Rockwell B Superficial 30T
O60 soft anneal 78 max 540 max 37 min . . . . . .
O61 annealed 77–87 5
...

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: B422/B422M − 17 B422/B422M − 22
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
This standard is issued under the fixed designation B422/B422M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification establishes the requirements for Copper Alloy UNS Nos. C19002, C19010, C19015, C19020, C19025,
C63800, C64725, C70250, C70260, C70265, C70310, and C70350 sheet and strip.
1.2 The values stated in either SIinch-pound units or inch-poundSI units are to be regarded separately as standard. The values
stated in each system may not 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.
1.3 The following safety hazard caveat pertains only to the test method(s) described in this specification.
1.3.1 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 determine the
applicability of regulatory limitations prior to use.
1.4 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
2.1 ASTM Standards:
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)
B846 Terminology for Copper and Copper Alloys
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
This specification is under the jurisdiction of 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 April 1, 2017Oct. 1, 2022. Published April 2017October 2022. Originally approved in 1965. Last previous edition approved in 20152017 as
B422/B422M-15.-17. DOI: 10.1520/B0422_B0422M-17.10.1520/B0422_B0422M-22.
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.
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’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
B422/B422M − 22
3. General Requirements
3.1 Material furnished to this specification shall be in accordance with the applicable requirements of the current edition of
Specification B248 or B248M.
4. Terminology
4.1 Definitions—For definitions of terms related to copper and copper alloys, refer to Terminology B846.
5. Ordering Information
5.1 Include the following specified choices when placing orders for product under this specification, as applicable.applicable:
5.1.1 ASTM designation and year of issue.issue,
5.1.2 Copper [Alloy] UNS No. designation (Section 1),
5.1.3 Temper (see(Section 7.17),
5.1.4 Dimensions (thickness, width, length, if applicable),
5.1.5 How furnished (rolls, specific lengths with or without ends, stock lengths with or without ends),
5.1.6 Quantity—total weight or total length or number of pieces of each size,
5.1.7 Form of material (sheet or strip),
5.1.8 Type of edge, if required (slit, sheared, sawed, square corners, rounded corners, rounded edges, or full-rounded edges
(see(Subsection 10.6), and
5.1.9 Type of width and straightness tolerances, if required (slit-metal tolerances, square sheared-metal tolerances, sawed-metal
tolerances, straightened or edge-rolled-metal tolerances) (Section 10),).
5.2 If product is purchased for agencies of the U.S. government, it shall conform to the Supplementary Requirements as defined
in government (see the Supplementary Requirement section of Specification B248 or B248M when specified in the contract or
purchase order.for additional requirements, if specified).
6. Chemical Composition
6.1 The material shall conform to the chemical composition requirements prescribed in Table 1 for the copper [alloy] UNS No.
designation specified in the ordering information.
6.2 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.
6.3 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 the elements in Table 1 for Alloys C19002, C19010, C63800, C64725, C70250, C70260, C70265,
C70310, and C70350 are determined, the sum of the results shall be 99.5 % min. When all the elements in Table 1 for Alloy
C19025 are determined, the sum of the results shall be 99.7 % min. When all the elements in Table 1 for Alloys C19015 and
C19020 are determined, the sum of the results shall be 99.8 % min.
7. Temper
7.1 The standard tempers for products described in this specification are as given in Tables 2-12.
B422/B422M − 22
TABLE 1 Chemical Requirements Composition %
Composition %
Copper Alloy UNS No.
Element C19002 C19010 C19015 C19020 C19025 C63800 C64725 C70250 C70260 C70265 C70310 C70350
A A A A A A
Nickel 1.4–1.7 0.8–1.8 0.50–2.4 0.50–3.0 0.8–1.2 0.20 max. 1.3–2.7 2.2–4.2 1.0–3.0 1.0–3.0 1.0–4.0 1.0–2.5
Silicon 0.20–0.35 0.15–0.35 0.10–0.40 . . . . . . 1.5–2.1 0.20–0.8 0.25–1.2 0.20–0.7 0.20–0.7 0.08–1.0 0.50–1.2
Lead, max 0.05 . . . . . . . . . . . . 0.05 0.01 0.05 . . . 0.05 0.05 0.05
Iron, max 0.10 . . . . . . . . . 0.10 0.20 0.25 0.20 . . . . . . 0.10 0.20
Zinc 0.04–0.35 . . . . . . . . . 0.20 max 0.8 max 0.50–1.5 1.0 max . . . 0.30 max 2.0 max 1.0 max
Aluminum . . . . . . . . . . . . . . . 2.5–3.1 . . . . . . . . . . . . . . . . . .
B
Copper remainder remainder remainder remainder remainder remainder 95.0 min remainder remainder remainder remainder remainder
Cobalt . . . . . . . . . . . . . . . 0.25–0.55 . . . . . . . . . . . . . . . 1.0–2.0
Manganese, . . . . . . . . . . . . . . . 0.10 . . . 0.10 . . . . . . . . . 0.20
max
Magnesium 0.01 max . . . 0.02–0.15 . . . . . . . . . 0.20 max 0.05–0.30 . . . . . . 0.10 max 0.04 max
Tin 0.02–0.30 . . . . . . 0.30–0.9 0.7–1.1 . . . 0.20–0.8 . . . . . . 0.05–0.8 1.0 max . . .
Phosphorus 0.05 max 0.01–0.05 0.02–0.20 0.01–0.20 0.03–0.07 . . . . . . . . . 0.01 max 0.01 max 0.05 max . . .
Calcium . . . . . . . . . . . . . . . . . . 0.01 max . . . . . . . . . . . . . . .
Chromium . . . . . . . . . . . . . . . . . . 0.09 max . . . . . . . . . . . . . . .
Silver 0.02–0.50 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.02–0.50 . . .
Zirconium 0.005–0.05 . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.005–0.05 . . .
A
Including cobalt.
B
Including silver.
TABLE 2 Tensile PropertyStrength Requirements and Approximate Hardness Values for Copper Alloy UNS No. C63800
A
Temper Designation Tensile Strength Elongation in 2 in. Approximate Rockwell Hardness
B C
DesignationCode Name ksi MPa [50.8 mm], % Rockwell B Superficial 30T
O60 soft anneal 78 max 540 max 37 min . . . . . .
O61 annealed 77–87 530–600 27–40 . . . 70–78
H01 ⁄4 hard 90–102 620–705 . . . 92–96 76–80
H02 ⁄2 hard 100–112 690–770 . . . 95–98 79–81
H03 ⁄4 hard 105–117 725–805 . . . 97–99 80–82
H04 hard 114–126 785–870 . . . 98–100 81–83
H06 extra hard 118–130 815–895 . . . 99–101 81–83
H08 spring 123–134 850–925 . . . 99–101 82–84
H10 extra spring 130 min 895 min . . . 100 min 83 min
A
Hardness values shown apply only to direct determination, not converted values. They are for information only.
B
ksi = 1000 psi.
C
See Appendix X1.
TABLE 3 Yield Strength Requirements for Copper Alloy UNS No.
C70250
Temper Designation Yield Strength at 0.2 % Offset
A B
Code ksi MPa
TM00 65–90 450–620
TM02 83–110 570–760
TM03 95–120 655–825
TR02 80 min 550 min
TH03 65–85 450–585
A
ksi = 1000 psi.
B
See Appendix X1.
8. Mechanical Property Requirements
8.1 Copper Alloy UNS No. C63800 is a dispersion-strengthened alloy which does not require heat treatment. The annealed and
rolled tempers shall conform to the tensile property requirements prescribed in Table 2.
8.2 Copper Alloy UNS No. C70250 is supplied in a mill-hardened, or cold-worked and precipitation heat-treated, or precipitation
heat-treated or spinodal heat-treated, 1/2 ⁄2 Hdhard and stress-relieved tempers. The 0.2 % offset yield strength shall be the standard
tests for these tempers and shall conform to the requirements specified in Table 3.
8.2.1 If ductility or formability requirements are desired, they shall be negotiated and agreed upon between the manufacturer and
purchaser.
B422/B422M − 22
TABLE 4 Tensile and Yield Requirements forStrength
Requirements
for Copper Alloy UNS No. C70260 and C70265
Temper Designation Yield Strength at 0.2 % Offset
A B
Code ksi MPa
TM00 65–85 450–585
TM
...