ASTM F562-22

Standard Specification for Wrought 35Cobalt-35Nickel-20Chromium-10Molybdenum Alloy for Surgical Implant Applications (UNS R30035)

ABSTRACT
This specification covers requirements of wrought 35cobalt-35nickel-20chromium-10molybdenum alloy (UNS R30035) in the form of bar and wire, used for the manufacture of surgical implants. This alloy depends on combinations of work-strengthening, and work-strengthening and aging to attain a variety of combinations of strength and ductility. Materials shall be tested and the individual grades shall conform to chemical requirements such as chemical composition and their tolerances, and mechanical properties such as tensile strength, yield strength, elongation, and area reduction.
SCOPE
1.1 This specification covers requirements of wrought 35cobalt-35nickel-20chromium-10molybdenum alloy (UNS R30035) in the form of bar and wire, used for the manufacture of surgical implants. This alloy depends on combinations of work strengthening and aging to attain a variety of combinations of strength and ductility.  
1.2 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 be exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other and values from the two systems shall not be combined.  
1.3 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: 31-Dec-2021
• ICS: 11.040.40 - Implants for surgery, prosthetics and orthotics
• Technical Committee: F04 - Medical and Surgical Materials and Devices
• Drafting Committee: F04.12 - Metallurgical Materials

Relations

• Refers: ASTM E8/E8M-24 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jan-2024
• Refers: ASTM E8/E8M-16 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 15-Jul-2016
• Refers: ASTM E8/E8M-15 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Feb-2015
• Refers: ASTM A751-14 - Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
• Effective Date: 01-Mar-2014
• Refers: ASTM E8/E8M-13 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Jun-2013
• Refers: ASTM E112-12 - Standard Test Methods for Determining Average Grain Size
• Effective Date: 15-Nov-2012
• Refers: ASTM E8/E8M-11 - Standard Test Methods for Tension Testing of Metallic Materials
• Effective Date: 01-Dec-2011
• Refers: ASTM E112-10 - Standard Test Methods for Determining Average Grain Size
• Effective Date: 01-Nov-2010
• Refers: ASTM F981-04(2010) - Standard Practice for Assessment of Compatibility of Biomaterials for Surgical Implants with Respect to Effect of Materials on Muscle and Bone
• Effective Date: 01-Jun-2010
• Refers: ASTM A751-08 - Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
• Effective Date: 01-Oct-2008
• Refers: ASTM E29-08 - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 01-Oct-2008
• Refers: ASTM A751-07a - Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
• Effective Date: 01-Jun-2007
• Refers: ASTM A751-07 - Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
• Effective Date: 01-Apr-2007
• Refers: ASTM E29-06b - Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• Effective Date: 15-Nov-2006
• Refers: ASTM E112-96(2004)e2 - Standard Test Methods for Determining Average Grain Size
• Effective Date: 23-Oct-2006

Overview

ASTM F562-22 is the Standard Specification for Wrought 35Cobalt-35Nickel-20Chromium-10Molybdenum Alloy (UNS R30035) for surgical implant applications. Developed by ASTM International, this specification defines quality requirements for the alloy in the form of bar and wire, focusing on compositions suitable for surgery and medical device manufacturing. The standard plays a crucial role in ensuring the mechanical properties, chemical composition, and biocompatibility of materials intended for human implants.

Key Topics

• Material Forms: Covers bars and wires, including fine wire varieties, intended for use in surgical implant production.
• Chemical Composition: Strict requirements for the alloy’s composition, with precise limits on cobalt, nickel, chromium, molybdenum, and trace elements, ensuring material consistency and quality.
• Mechanical Properties: Establishes minimum requirements for tensile strength, yield strength, elongation, and reduction of area, which vary depending on the product condition (solution-annealed, cold-worked, or aged).
• Testing and Certification: Mandates standardized testing methods and practices for mechanical and chemical analysis, referencing well-established ASTM procedures. Certified documentation is required for each supply batch, affirming compliance.
• Units of Measure: Allows use of either SI or inch-pound units, but both must be used independently to maintain standard conformance.
• Quality Management: Suppliers must maintain comprehensive quality management systems, such as ISO 9001 or ISO 13485, to support regulatory and buyer requirements.
• Biocompatibility Assurance: References ISO and ASTM practices for assessing the compatibility of the alloy with muscle and bone, vital for surgical implants.
• Regulatory Considerations: Addresses international regulations, including EU MDR and CLP regulations, particularly regarding cobalt content and labeling.

Applications

The ASTM F562-22 standard is widely utilized in the medical device industry, specifically for the manufacture of surgical implants such as:

• Orthopedic Implants: Screws, plates, and pins requiring high strength and corrosion resistance.
• Cardiac Devices: Components in pacemakers, defibrillators, and stents, benefiting from the alloy’s mechanical reliability.
• Dental Devices: Prosthetic and structural elements in dental surgery that need excellent workability and proven biocompatibility.
• Specialty Surgical Instruments: Tools intended for long-term exposure to biological environments.

The alloy's balanced strength and ductility, achieved through work strengthening and aging, make it ideal where both mechanical durability and compatibility with human tissues are critical.

Related Standards

Several standards complement or are referenced within ASTM F562-22. Key related standards include:

• ASTM A751: Test Methods and Practices for Chemical Analysis of Steel Products.
• ASTM E8/E8M: Test Methods for Tension Testing of Metallic Materials.
• ASTM E112: Test Methods for Determining Average Grain Size.
• ASTM E354: Methods for Chemical Analysis of Iron, Nickel, and Cobalt Alloys.
• ASTM F981: Practice for Assessment of Compatibility of Biomaterials for Surgical Implants.
• ISO 5832-6: Metallic materials for surgical implants-Part 6: Cobalt-nickel-chromium-molybdenum alloy.
• ISO 6892: Metallic Materials-Tensile Testing at Ambient Temperature.
• ISO 9001 & ISO 13485: Quality Management Systems for general and medical device specific requirements.
• AMS 2269, AMS 2630, AMS 2632: Aerospace specifications for chemical and ultrasonic inspection.

Practical Value

Implementing ASTM F562-22 in surgical implant manufacturing ensures:

• Consistency in Material Quality: Reduces variability in alloy composition and mechanical performance.
• Compliance with Medical Regulations: Facilitates conformity to FDA, EU, and international regulatory frameworks.
• Patient Safety and Device Longevity: Supports the selection and verification of alloys with established biocompatibility and clinical track records.
• Global Market Access: Alignment with ASTM and ISO standards simplifies cross-border certification and acceptance.

By adhering to ASTM F562-22, manufacturers and suppliers demonstrate commitment to the highest standards of safety, performance, and regulatory compliance in the medical and surgical device industries.

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:F562 −22
Standard Specification for
Wrought 35Cobalt-35Nickel-20Chromium-10Molybdenum
Alloy for Surgical Implant Applications (UNS R30035)
ThisstandardisissuedunderthefixeddesignationF562;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* Determine Conformance with Specifications
E112 Test Methods for Determining Average Grain Size
1.1 This specification covers requirements of wrought
E354 Test Methods for Chemical Analysis of High-
35cobalt-35nickel-20chromium-10molybdenum alloy (UNS
Temperature,Electrical,Magnetic,andOtherSimilarIron,
R30035) in the form of bar and wire, used for the manufacture
Nickel, and Cobalt Alloys
of surgical implants. This alloy depends on combinations of
F981 Practice for Assessment of Compatibility of Biomate-
work strengthening and aging to attain a variety of combina-
rials for Surgical Implants with Respect to Effect of
tions of strength and ductility.
Materials on Muscle and Insertion into Bone
1.2 The values stated in either SI units or inch-pound units
IEEE/ASTM SI 10 American National Standard for Metric
are to be regarded separately as standard. The values stated in
Practice
each system may not be exact equivalents; therefore, to ensure
2.2 ISO Standards:
conformance with the standard, each system shall be used
ISO 5832/6 Implants for Surgery—Metallic Materials Part
independently of the other and values from the two systems
6: Wrought cobalt-nickel-chromium-molybdenum Alloy
shall not be combined.
ISO 6892 Metallic Materials—Tensile Testing at Ambient
1.3 This standard does not purport to address all of the
Temperature
safety concerns, if any, associated with its use. It is the
ISO 9001 Quality Management Systems
responsibility of the user of this standard to establish appro-
ISO 13485 Medical Devices—Quality Management
priate safety, health, and environmental practices and deter-
Systems—Requirements for Regulatory Purposes
mine the applicability of regulatory limitations prior to use.
2.3 Aerospace Material Specifications:
1.4 This international standard was developed in accor-
AMS 2269 Chemical Check Analysis Limits—Wrought
dance with internationally recognized principles on standard-
Nickel Alloys and Cobalt Alloys
ization established in the Decision on Principles for the
AMS 2630 Inspection, Ultrasonic Product over 0.5 inch
Development of International Standards, Guides and Recom-
(12.7 mm) Thick
mendations issued by the World Trade Organization Technical
AMS 2632 Ultrasonic Inspection of Thin Materials
Barriers to Trade (TBT) Committee.
3. Terminology
2. Referenced Documents
3.1 Definitions of Terms Specific to This Standard:
2.1 ASTM Standards:
3.1.1 bar, n—round, rectangular, or other complex-shaped
A751 Test Methods and Practices for Chemical Analysis of
product delivered straightened and cut to defined lengths.
Steel Products
E8/E8M Test Methods for Tension Testing of Metallic Ma- 3.1.2 fine wire, n—round, rectangular, or other complex
terials shapesofuniformcrosssectionalongitswholelengthlessthan
E29 Practice for Using Significant Digits in Test Data to 1.60 mm [0.063 in.] in diameter or thickness furnished in coils,
or on spools, reels, or other packaging as specified.
3.1.3 forging bar, n—bar as described in 3.1.1, used for the
This specification is under the jurisdiction of ASTM Committee F04 on
production of forgings; may be furnished in the hot-worked
Medical and Surgical Materials and Devices and is the direct responsibility of
Subcommittee F04.12 on Metallurgical Materials. condition.
Current edition approved Jan. 1, 2022. Published January 2022. Originally
approved in 1978. Last previous edition approved in 2013 as F562 – 13. DOI:
10.1520/F0562-22.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Standards volume information, refer to the standard’s Document Summary page on Available from Society of Automotive Engineers, Inc., 400 Commonwealth
the ASTM website. Drive, Warrendale, PA 15096–0001.
*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
F562−22
3.1.4 lot, n—the total number of mill products produced 6.1.2 All commercial metals may contain small amounts of
from the same melt heat under the same conditions at essen- elements other than those which are specified. It is neither
tially the same time. practical nor necessary to specify limits for unspecified ele-
ments that can be present.The producer is permitted to analyze
3.1.5 wire, n—round, rectangular, or other complex shapes
for unspecified elements and is permitted to report such
of uniform cross section along its entire length less than
analyses. The presence of an unspecified element and the
4.76 mm [0.1875 in.] in diameter or thickness furnished in
reporting of an analysis for that element shall not be a basis for
coils, or on spools, reels, or other packaging as specified.
rejection unless previously agreed to between purchaser and
supplier.
4. Ordering Information
6.1.3 Intentional elemental additions other than those speci-
4.1 Inquiries and orders for material under this specification
fied in Table 1 are not permitted, unless previously agreed to
shall include the following information:
between purchaser and supplier.
4.1.1 Quantity,
6.1.4 Analysis for elements not listed in Table 1 is not
4.1.2 ASTM designation and date of issue,
required to verify compliance with this specification, unless
4.1.3 Mechanical properties (Section 7),
previously agreed to between purchaser and supplier.
4.1.4 Form (bar or wire),
6.1.5 Methods and practices relating to chemical analysis
4.1.5 Applicable dimensions, including size, thickness,
required by this specification shall be in accordance with Test
width, and length (exact, random, multiples), or drawing
Methods A751 and E354.
number,
6.2 Product (Check) Analysis:
4.1.6 Condition (5.1),
6.2.1 Product (check) analysis limits shall conform to the
4.1.7 Finish (5.2),
product tolerances in Table 2 per AMS 2269. Product (check)
4.1.8 Special tests, if applicable, and
analysis tolerances do not broaden the specified heat (ladle or
4.1.9 Other requirements.
ingot) analysis requirements but cover variations between
5. Materials and Manufacture laboratories in the measurement of chemical content.
6.2.2 Product (check) analysis limits are not for use at
5.1 Condition—Bar and wire shall be furnished, as
supplier’s/producer’s acceptance testing. Product (check)
specified, in the solution-annealed, cold-worked, cold-worked
analysis limits are not permitted to be applied to ladle or ingot
and aged, or hot-worked condition.
analysis. The supplier/producer shall not ship material that is
5.2 Finish—Bar and wire shall be furnished in cold-drawn,
outside the limits specified in Table 1.
pickled, ground, or ground and polished, as specified by the
6.2.3 A product (check) analysis is one performed by
purchaser.
purchaser or supplier of the metal after it has been worked into
bar and wire, and is either for the purpose of verifying the
6. Chemical Requirements
composition of a heat or manufacturing lot or to determine
6.1 The supplier’s heat analysis shall conform to the chemi-
variations in the composition within the heat.
cal requirements prescribed in Table 1. The supplier shall not
6.2.4 Acceptance or rejection of a heat or manufacturing lot
ship material with chemistry that is outside the limits specified
of material may be made by the purchaser on the basis of this
in Table 1.
product (check) analysis. Product (check) analysis outside the
6.1.1 Requirements for the major and minor elemental
tolerance limits allowed in Table 2 is cause for rejection of the
constituents are listed in Table 1. Also listed are important
product. A referee analysis may be used if agreed upon by
residual elements.Analysis for elements not listed in Table 1 is
supplier and purchaser.
not required to verify compliance with this specification.
A,B
TABLE 2 Product Analysis Tolerances
Tolerance Under the
TABLE 1 Chemical Requirements
Minimum or
Element
Composition, % (mass/mass)
Over the Maximum Limit %
Element
C
min max (mass/mass)
Carbon . 0.025 Carbon 0.01
Manganese . 0.15 Manganese 0.03
Silicon . 0.15 Silicon 0.02
Phosphorus . 0.015
Phosphorus 0.005
Sulfur . 0.010 Sulfur 0.005
Chromium 19.0 21.0 Chromium 0.25
Nickel 33.0 37.0 Nickel 0.30
Molybdenum 9.0 10.5 Molybdenum 0.15
Iron . 1.0 Iron 0.05
Titanium . 1.0 Titanium 0.04
Boron . 0.015 Boron 0.005
A
Cobalt balance balance
A
See Test Methods E354.
A B
Approximately equal to the difference between 100 % and the sum percentage See AMS 2269 for chemical check analysis limits.
C
of the other specified elements.The percentage cobalt content by difference is not Under minimum limit not applicable for elements where only a maximum
required to be reported. percentage is indicated.
F562−22
6.2.5 For referee purposes, use Test Methods A751 and purchase order, this selection may be expressed by the pur-
E354, or other analytical methods agreed upon between the chaser in several alternative forms listed in order of prece-
purchaser and supplier. dence.
8.1.1.1 If the purchaser and supplier have a history of using
7. Mechanical Requirements
specific units, these units shall continue to be certified until
7.1 Tensile Properties: expressly changed by the purchaser.
8.1.1.2 In the absence of historic precedence, if the units
7.1.1 Tensile properties shall be determined in accordance
with Test Methods E8/E8M. used to define the product on the purchaser’s purchase order
(PO), specification, and engineering drawing are consistent,
7.2 Number of Tests – Bar, Forging Bar, Shapes, and Wire:
these units shall be used by the supplier for product certifica-
7.2.1 Perform a minimum of two tension tests on at least
tion.
one piece from each lot. Should any of the test pieces not meet
8.1.1.3 If the purchaser’s selection of units is unclear, the
the specified requirements, test two additional test pieces
units of measure shall be agreed upon between the purchaser
representative of the same lot, in the same manner, for each
and supplier.
failedtestpiece.Thelotshallbeconsideredincomplianceonly
8.1.2 Conversion of Units—If the supplier’s test equipment
if all additional test pieces meet the specified requirements.
does not report in the selected units, the test equipment units
7.2.2 Tensile test results for which any specimen fractures
may be converted to the selected units for certification pur-
outside the gauge length shall be considered acceptable, if both
poses. Accurate arithmetic conversion and proper use of
the elongation and reduction of area meet the minimum
significant digits should be observed when performing this
requirements specified and all other results conform to Tables
conversion. IEEE/ASTM SI 10 provides guidelines for the use
3and4.Refertosubsections7.11.4and7.12.5ofTestMethods
ofSIunits.AnnexAofIEEE/ASTMSI10providesconversion
E8/E8M. If either the elongation or reduction of area is less
tables and Annex B of IEEE/ASTM SI 10 provides rules for
than the minimum requirement, discard the test and retest.
conversion and significance.
Retest one specimen for each specimen that did not meet the
minimum requirements.
9. Special Tests
7.2.3 Mechanical properties for the solution annealed, cold-
worked medium hard, hard, and extra hard, and cold-worked
9.1 ThegrainsizeofbarproductshallbepredominantlyNo.
and aged conditions shall conform to the mechanical property
4 or finer with occasional grains as large as No. 2 permissible
requirements specified in Tables 3 and 4.
when tested in accordance with Test Methods E112.
7.2.4 Material may be provided in the cold-worked
9.1.1 Itispreferredthatsamplesforgrainsizedetermination
condition, capable of meeting the cold-worked and aged
be selected after the final annealing operation and prior to the
conditi
...

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: F562 − 13 F562 − 22
Standard Specification for
Wrought 35Cobalt-35Nickel-20Chromium-10Molybdenum
Alloy for Surgical Implant Applications (UNS R30035)
This standard is issued under the fixed designation F562; 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 requirements of wrought 35cobalt-35nickel-20chromium-10molybdenum alloy (UNS R30035) in the
form of bar and wire, used for the manufacture of surgical implants. This alloy depends on combinations of work strengthening
and aging to attain a variety of combinations of strength and ductility.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system aremay not necessarilybe exact equivalents; therefore, to ensure conformance with the standard, each system shall be used
independently of the other,other and values from the two systems shall not be combined.
1.3 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.
2. Referenced Documents
2.1 ASTM Standards:
A751 Test Methods and Practices for Chemical Analysis of Steel Products
E8/E8M Test Methods for Tension Testing of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E112 Test Methods for Determining Average Grain Size
E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and
Cobalt Alloys
F981 Practice for Assessment of Compatibility of Biomaterials for Surgical Implants with Respect to Effect of Materials on
Muscle and Insertion into Bone
IEEE/ASTM SI 10 American National Standard for Metric Practice
2.2 ISO Standards:
ISO 5832/6 Implants for Surgery—Metallic Materials Part 6: Wrought cobalt-nickel-chromium-molybdenum Alloy
ISO 6892 Metallic Materials—Tensile Testing at Ambient Temperature
This specification is under the jurisdiction of ASTM Committee F04 on Medical and Surgical Materials and Devices and is the direct responsibility of Subcommittee
F04.12 on Metallurgical Materials.
Current edition approved March 1, 2013Jan. 1, 2022. Published March 2013January 2022. Originally approved in 1978. Last previous edition approved in 20072013 as
F562 – 07.F562 – 13. DOI: 10.1520/F0562-13.10.1520/F0562-22.
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.
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
*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
F562 − 22
ISO 9001 Quality Management Systems
ISO 13485 Medical Devices—Quality Management Systems—Requirements for Regulatory Purposes
2.3 Aerospace Material Specifications:
AMS 2269 Chemical Check Analysis Limits—Wrought Nickel Alloys and Cobalt Alloys
AMS 2630 Inspection, Ultrasonic Product over 0.5 inch (12.7 mm) Thick
AMS 2632 Ultrasonic Inspection of Thin Materials
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 bar, n—rounds, flats, or other shapes from 0.1875 to 4.00 in. [4.76 to 101.60 mm] in diameter or thickness (other sizes and
shapes by special order).round, rectangular, or other complex-shaped product delivered straightened and cut to defined lengths.
3.1.2 fine wire, n—rounds, flats,round, rectangular, or other shapes less than 0.063 in. [1.60 mm] complex shapes of uniform cross
section along its whole length less than 1.60 mm [0.063 in.] in diameter or thickness.thickness furnished in coils, or on spools,
reels, or other packaging as specified.
3.1.3 forging bar, n—bar as described in 3.1.1, used for the production of forgings; may be furnished in the hot-worked condition.
3.1.4 lot, n—the total number of mill products produced from the same melt heat under the same conditions at essentially the same
time.
3.1.5 wire, n—round, flats,rectangular, or other shapes less than 0.1875 in. [4.76 mm]complex shapes of uniform cross section
along its entire length less than 4.76 mm [0.1875 in.] in diameter or thickness. thickness furnished in coils, or on spools, reels, or
other packaging as specified.
4. Ordering Information
4.1 Inquiries and orders for material under this specification shall include the following information:
4.1.1 Quantity,
4.1.2 ASTM designation and date of issue,
4.1.3 Mechanical properties (Section 7),
4.1.4 Form (bar or wire),
4.1.5 Applicable dimensions, including size, thickness, width, and length (exact, random, multiples), or drawing number,
4.1.6 Condition (5.1),
4.1.7 Finish (5.2),
4.1.8 Special tests, if applicable, and
4.1.9 Other requirements.
5. Materials and Manufacture
5.1 Condition—Bar and wire shall be furnished, as specified, in the solution-annealed, cold-worked, cold-worked and aged, or
hot-worked condition.
5.2 Finish—Bar and wire shall be furnished in cold-drawn, pickled, ground, or ground and polished, as specified by the purchaser.
Available from Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, PA 15096–0001.
F562 − 22
6. Chemical Requirements
6.1 Chemical analysis shall be in accordance with Test Methods E354 and A751.
6.1 The cobalt-35nickel-20chromium-10molybdenum alloy supplier’s heat analysis shall conform to the chemical requirements
prescribed in Table 1. The supplier shall not ship material with chemistry that is outside the limits specified in Table 1.
6.1.1 Requirements for the major and minor elemental constituents are listed in Table 1. Also listed are important residual
elements. Analysis for elements not listed in Table 1 is not required to verify compliance with this specification.
6.1.2 All commercial metals may contain small amounts of elements other than those which are specified. It is neither practical
nor necessary to specify limits for unspecified elements that can be present. The producer is permitted to analyze for unspecified
elements and is permitted to report such analyses. The presence of an unspecified element and the reporting of an analysis for that
element shall not be a basis for rejection unless previously agreed to between purchaser and supplier.
6.1.3 Intentional elemental additions other than those specified in Table 1 are not permitted, unless previously agreed to between
purchaser and supplier.
6.1.4 Analysis for elements not listed in Table 1 is not required to verify compliance with this specification, unless previously
agreed to between purchaser and supplier.
6.1.5 Methods and practices relating to chemical analysis required by this specification shall be in accordance with Test Methods
A751 and E354.
6.2 Product Analysis—(Check) Analysis: The product analysis is either for the purpose of verifying the composition of a heat or
lot or to determine variations in the composition within the heat.
6.2.1 Product (check) analysis limits shall conform to the product tolerances in Table 2 per AMS 2269. Product (check) analysis
tolerances do not broaden the specified heat (ladle or ingot) analysis requirements but cover variations between laboratories in the
measurement of chemical content.
6.2.2 Product (check) analysis limits are not for use at supplier’s/producer’s acceptance testing. Product (check) analysis limits are
not permitted to be applied to ladle or ingot analysis. The supplier/producer shall not ship material that is outside the limits
specified in Table 1.
6.2.3 A product (check) analysis is one performed by purchaser or supplier of the metal after it has been worked into bar and wire,
and is either for the purpose of verifying the composition of a heat or manufacturing lot or to determine variations in the
composition within the heat.
6.2.4 Acceptance or rejection of a heat or manufacturing lot of material may be made by the purchaser on the basis of this product
TABLE 1 Chemical Requirements
Composition,% Composition, % (mass/mass)
Element
min max
Carbon . 0.025
Manganese . 0.15
Silicon . 0.15
Phosphorus . 0.015
Sulfur . 0.010
Chromium 19.0 21.0
Nickel 33.0 37.0
Molybdenum 9.0 10.5
Iron . 1.0
Titanium . 1.0
Boron . 0.015
A
Cobalt balance balance
A
Approximately equal to the difference between 100 % and the sum percentage
of the other specified elements. The percentage cobalt content by difference is not
required to be reported.
F562 − 22
analysis.(check) analysis. Product (check) analysis outside the tolerance limits allowed in Table 2 is cause for rejection of the
product. A referee analysis may be used if agreed upon by supplier and purchaser.
6.2.5 Product analysis tolerances do not broaden theFor referee purposes, use Test Methods A751 specifiedand E354heat analysis
requirements but cover variations between laboratories in the measurement of chemical content. Product analysis limits shall be
as specified in , or other analytical methods agreed upon between the purchaser and supplier.Table 2.
A,B
TABLE 2 Product Analysis Tolerances
Tolerance Under the
Minimum or
Element
Over the Maximum Limit %
C
(mass/mass)
Carbon 0.01
Manganese 0.03
Silicon 0.02
Phosphorus 0.005
Sulfur 0.005
Chromium 0.25
Nickel 0.30
Molybdenum 0.15
Iron 0.05
Titanium 0.04
Boron 0.005
A
See Test MethodMethods E354.
B
See AMS 2269 for chemical check analysis limits.
C
Under minimum limit not applicable for elements where only a maximum
percentage is indicated.
F562 − 22
7. Mechanical Requirements
7.1 Tensile Properties:
7.1.1 Tensile properties shall be determined in accordance with Test Methods E8/E8M.
7.2 Tensile Properties: Number of Tests – Bar, Forging Bar, Shapes, and Wire:
7.2.1 Tensile properties shall be determined in accordance with Test Methods E8/E8M. Perform a tension testminimum of two
tension tests on at least one piece from each lot. Should any of the test piecepieces not meet the specified requirements, test two
additional test pieces representative of the same lot, in the same manner, for each failed test piece. The lot shall be considered in
compliance only if all additional test pieces meet the specified requirements.
7.2.2 Tensile tests resulttest results for which any specimen fractures outside the gauge length shall be considered acceptable, if
both the elongation and reduction of area meet the minimum requirements specified. specified and all other results conform to
Tables 3 and 4. Refer to subsections 7.11.4 and 7.11.57.12.5 of Test Methods E8/E8M. If either the elongation or reduction of area
is less than the minimum requirement, discard the test and retest. Retest one specimen for each specimen that did not meet the
minimum requirements requirements.
7.2.3 Mechanical properties for the solution annealed, cold-worked medium hard, hard, and extra hard, and cold-worked and aged
conditions shall conform to the mechanical property requirements specified in Tables 3 and 4.
7.2.4 Material may be provided in the cold-worked condition, capable of meeting the cold-worked and aged condition. In this case,
the capability heat-treated tensile properties shall be tested and reported.
7.2 Solution-annealed bar and wire shall conform to the mechanical properties specified in Tables 3 and 4.
7.3 Mechanical properties for the cold-worked and cold-worked and aged conditions: medium hard, hard and extra hard shall
conform to the mechanical property requirements specified in Tables 3 and 4.
7.3.1 Material may be provided in the cold-worked condition, capable of meeting the cold-worked and aged condition. In this case,
the capability heat-treated tensile properties shall be tested and reported.
TABLE 3 Mechanical Properties (Bar Products)
A
Yield Strength,
A B
Reduction in Area,
Tensile Strength, Elongation
Condition (0.2 % Offset)
psi [MPa]MPa [psi] min, %
min, %
psi [MPa]MPa [psi]
C
Solution-annealed 115 000 to 155 000 35 000 to 85 000 50.0 65.0
[793 to 1069] [241 to 586]
C
Solution-annealed 793 to 1069 241 to 586 50.0 65.0
[115 000 to 155 000] [35 000 to 85 000]
Cold-worked:
medium hard 145 000 95 000 20.0 60.0
[1000] min. [655] min.
medium hard 1000 655 20.0 60.0
[145 000] min. [95 000] min.
hard 175 000 145 000 10.0 50.0
[1207] min. [1000] min.
hard 1207 1000 10.0 50.0
[175 000] min. [145 000] min.
D
Cold-worked and aged 260 000 230 000 8.0 35.0
[1793] min [1586] min
D
Cold-worked and aged 1793 1586 8.0 35.0
[260 000] min. [230 000] min.
A
Tension and yield requirements apply to tests taken longitudinally to the direction of rolling.
B
Elongation Elongation of material 0.063 in. [1.6 mm]1.6 mm [0.063 in.] or greater in diameter (D) or width (W) shall be measured using a gauge length of 2 in. 50.8 mm
[2 in.] or 4D or 4W. The gauge length shall be reported with the test results. The method for determining elongation of material under 0.063 in. [1.6 mm]1.6 mm [0.063
in.] in diameter or thickness may be negotiated. Alternately, a gauge length corresponding to ISO 6892 may be used when agreed upon between the supplier and purchaser
(5.65 square root So, where So is the original cross sectional cross-sectional area).
C
1925 ± 25°F [1050° ± 15°C], 1050 ± 15 °C [1925 ± 25 °F], 1 to 2 h at temperature, air cooled or water quenched to room temperature.
D
Capability Test—Cold-worked and aged within the range 1000 of 540 to 1200°F645 °C ± 25°F [54015 °C [1000 to 645°C1200 °F ± 15°C]25 °F] for 4 h and air cooled.
F562 − 22
A
TABLE 4 Mechanical Properties—Wire Products (d $ 0.063 in. [1.6 mm])1.6 mm [0.063 in.])
B
Yield Strength,
B C
Reduction in Area,
Tensile Strength, Elongation
Condition (0.2 % Offset)
psi [MPa]MPa [psi] min, %
min, %
psi [MPa]MPa [psi]
Solution-annealed 115 000 to 155 000 35 000 to 85 000 50.0 65.0
[793 to 1069] [241 to 586]
Solution-annealed 793 to 1069 241 to 586 50.0 65.0
[115 000 to 155 000] [35 000 to 85 000]
Cold-worked:
medium hard 145 000 95 000 20.0 60.0
[1000] min. [655] min.
medium hard 1000 655 20.0 60.0
[145 000] min. [95 000] min.
hard 1
...