ASTM F1537-07
(Specification)Standard Specification for Wrought Cobalt-28Chromium-6Molybdenum Alloys for Surgical Implants (UNS R31537, UNS R31538, and UNS R31539)
Standard Specification for Wrought Cobalt-28Chromium-6Molybdenum Alloys for Surgical Implants (UNS R31537, UNS R31538, and UNS R31539)
SCOPE
1.1 This specification covers the chemical, mechanical, and metallurgical requirements for three wrought cobalt-28chromium-6molybdenum alloys used for surgical implants. The properties specified apply specifically to wrought bar, rod, and wire.
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents in parentheses are for information only.
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Standards Content (Sample)
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Designation: F 1537 – 07
Standard Specification for
Wrought Cobalt-28Chromium-6Molybdenum Alloys for
Surgical Implants (UNS R31537, UNS R31538, and UNS
1
R31539)
This standard is issued under the fixed designation F 1537; 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* AMS 2269 Chemical Check Analysis Limits, Nickel,
Nickel Alloys and Cobalt Alloys
1.1 This specification covers the chemical, mechanical, and
AMS 2630 Ultrasonic Inspection
metallurgical requirements for three wrought cobalt-
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2.3 ISO Standards:
28chromium-6molybdenum alloys used for surgical implants.
ISO 5832–12 Implants for Surgery—Metallic Materials—
The properties specified apply specifically to wrought bar, rod,
Part 12: Wrought Cobalt-Chromium-Molybdenum Alloy
and wire.
ISO 6892 Metallic Materials Tensile Testing at Ambient
1.2 The values stated in inch-pound units are to be regarded
Temperature
as the standard. The SI equivalents in parentheses are for
ISO 9001 Quality Management Systems—Requirements
information only.
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2.4 American Society for Quality Standard:
2. Referenced Documents
ASQ C1 Specification of General Requirements for a Qual-
2
ity Program
2.1 ASTM Standards:
E8 Test Methods for Tension Testing of Metallic Materials
3. Terminology
E18 Test Methods for Rockwell Hardness of Metallic
3.1 Definitions of Terms Specific to This Standard:
Materials
3.1.1 lot—the total number of mill products produced from
E29 Practice for Using Significant Digits in Test Data to
the same melt heat under the same conditions at essentially the
Determine Conformance with Specifications
same time.
E112 Test Methods for Determining Average Grain Size
E 354 Test Methods for Chemical Analysis of High-
4. Ordering Information
Temperature, Electrical, Magnetic, and Other Similar Iron,
4.1 Inquiries and orders for material under this specification
Nickel, and Cobalt Alloys
shall include the following information:
F75 SpecificationforCobalt-28Chromium-6Molybdenum
4.1.1 Quantity,
Alloy Castings and Casting Alloy for Surgical Implants
4.1.2 ASTM designation, alloy number, and date of issue,
(UNS R30075)
4.1.3 Mechanical properties (See Section 7),
F 799 SpecificationforCobalt-28Chromium-6Molybdenum
4.1.4 Form (bar, rod or wire),
Alloy Forgings for Surgical Implants (UNS R31537,
4.1.5 Applicable dimensions including size, thickness,
R31538, R31539)
3 width, and length (exact, random, or multiples) or drawing
2.2 Aerospace Material Specifications:
number,
AMS 2248 Chemical Check Analysis Limits, Corrosion
4.1.6 Condition (See Section 5),
and Heat Resistant Steels andAlloys, Maraging and Other
4.1.7 Special tests (if any), and
Highly-Alloyed Steels, and Iron Alloys
4.1.8 Other requirements.
5. Materials and Manufacture
1
This specification is under the jurisdiction of ASTM Committee F04 on
5.1 Product shall be furnished as specified below:
Medical and Surgical Materials and Devices and is the direct responsibility of
5.1.1 The annealed condition is typically supplied as a hot
Subcommittee F04.12 on Metallurgical Materials.
Current edition approved July 1, 2007. Published August 2007. Originally
rolled and annealed product.
approved in 1994. Last previous edition approved in 2000 as F 1537 – 00.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
4
Standards volume information, refer to the standard’s Document Summary page on Available fromAmerican National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036, http://www.ansi.org.
3 5
Available from Society of Automotive Engineers (SAE), 400 Commonwealth Available from American Society for Quality (ASQ), 600 N. Plankinton Ave.,
Dr., Warrendale, PA 15096-0001, http://www.sae.org. Milwaukee, WI 53203, http://www.asq.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.
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F1537–07
A,B
TABLE 2 Product Analysis Tolerances
5.1.2 Thehotworkedconditionistypicallysuppliedasahot
rolled and unannealed product. Element Permissible Variation Under the Minimum
Limit or Over the Maximum Limit, % (mass/
5.1.3 The warm worked condition is typically supplied as a
C
mass)
thermomechanically processed product to achieve a strain-
Carbon 0.02
hardened structure.
Aluminum# 0.50 0.05
Aluminum>0.50upto1.00 0.10
Lanthanum 0.01
6. Chemical Requirements
Chromium 0.30
6.1 Thecobalt-28chromium-6molybdenumalloys
...
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