ASTM F961-96

Standard Specification for Cobalt-35 Nickel-20 Chromium-10 Molybdenum Alloy Forgings for Surgical Implants [UNS R30035]

SCOPE
1.1 This specification covers the requirements for cobalt-35 nickel-20 chromium-10 molybdenum alloy forgings for surgical implants.  
1.2 The values stated in inch-pound units are to be regarded as the standard.

General Information

• Status: Historical
• Publication Date: 31-Dec-1995
• 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

• Replaced By: ASTM F961-03 - Standard Specification for Cobalt-35 Nickel-20 Chromium-10 Molybdenum Alloy Forgings for Surgical Implants [UNS R30035]
• Effective Date: 10-Feb-2003

Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: F 961 – 96
Standard Specification for
Cobalt-35 Nickel-20 Chromium-10 Molybdenum Alloy
Forgings for Surgical Implants (UNS R30035)
This standard is issued under the fixed designation F 961; 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 Cl Specification of General Requirements for a Quality
Program
1.1 This specification covers the requirements for cobalt-35
nickel-20 chromium-10 molybdenum alloy forgings for surgi-
3. Terminology
cal implants.
3.1 Definition of a Term Specific to This Standard:
1.2 The values stated in inch-pound units are to be regarded
3.1.1 capability—the word “capability” is used to indicate
as the standard.
the ability of cold-worked material to attain specific mechani-
2. Referenced Documents cal properties after thermal aging treatment.
2.1 ASTM Standards:
4. Ordering Information
A 751 Test Methods, Practices, and Terminology for
2 4.1 Inquiries and orders for material under this specification
Chemical Analysis of Steel Products
3 shall include the following information:
E 8 Test Methods for Tension Testing of Metallic Materials
4.1.1 Quantity (weight or number of pieces),
E 10 Test Method for Brinell Hardness of Metallic Materi-
3 4.1.2 ASTM designation and date of issue,
als
4.1.3 Form,
E 18 Test Methods for Rockwell Hardness and Rockwell
3 4.1.4 Condition,
Superficial Hardness of Metallic Materials
4.1.5 Mechanical properties (if applicable),
E 112 Test Methods for Determining the Average Grain
3 4.1.6 Finish,
Size
3 4.1.7 Applicable dimensions, including size, thickness
E 140 Hardness Conversion Tables for Metals
width, and length (exact, random, multiples), or print number,
E 165 Practice for Liquid Penetrant Examination
4.1.8 Special tests, and
F 562 Specification for Wrought Cobalt-35 Nickel-20
4.1.9 Special requirements.
Chromium-10 Molybdenum Alloy for Surgical Implant
Applications
5. Materials and Manufacture
F 601 Practice for Fluorescent Penetrant Inspection of Me-
5 5.1 Material for forgings shall be bars, plate, sheet, or wire
tallic Surgical Implants
fabricated in accordance with Specification F 562 or Specifi-
F 688 Specification for Wrought Cobalt-35 Nickel-20
cation F 688. The material shall be generally in the solution-
Chromium-10 Molybdenum Alloy Plate, Sheet, and Foil
5 annealed condition with a finish suitable for forging.
for Surgical Implants
5.2 The material shall be forged by hammering, pressing,
F 981 Practice for Assessment of Compatibility of Bioma-
rolling, extruding, or upsetting and shall be processed, if
terials for Surgical Implants with Respect to Effect of
practicable, so as to cause metal flow to be in the most
Materials in Muscle and Bone
favorable direction for resisting stresses encountered in ser-
2.2 Federal Standard:
vice, as may be indicated to the fabricator by the implant
Federal Test Method No. 151 Metals; Test Methods
manufacturer.
2.3 American Society for Quality Control Standard:
5.3 Forgings shall be free of splits, scale, cracks, inequali-
ties, flaws, and other imperfections not consistent with good
This specification is under the jurisdiction of ASTM Committee F04 on
commercial practice.
Medical and Surgical Materials and Devices and is the direct responsibility of
Subcommittee F04.12 on Metallurgical Materials NOTE 1—Compliance to these requirements may be verified by Practice
Current edition approved Oct. 10, 1996. Published January 1997. Originally
E 165 or Practice F 601 or other suitable methods.
published as F 961 – 85. Last previous edition F 961 – 92.
5.4 When specified by the implant manufacturer, a thermal
Annual Book of ASTM Standards, Vol 01.03.
Annual Book of ASTM Standards, Vol 03.01. treatment shall be performed, as specified, after all forging
Annual Book of ASTM Standards, Vol 03.03.
Annual Book of ASTM Standards, Vol 13.01.
6 7
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Copyright © ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959, United States.
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
F 961
NOTE 2—When desired, Brinell hardness may be taken as described in
operations are performed.
Test Method E 10 and converted to Rockwell hardness in accordance with
5.5 Optional identification marks, including the manufactur-
Hardness Conversion Tables E140.
er’s logo, material designation, heat code number, and impres-
sion number, may be placed upon each forging. The method
7.4 The mechanical properties shall be determined in accor-
and location of identification shall be as specified by the
dance with Test Methods E 8 using a strain rate of 0.003 to
purchaser.
0.007 in./in. min. (mm/mm min.)
...