ASTM F138-00
(Specification)Standard Specification for Wrought 18 Chromium-14 Nickel-2.5 Molybdenum Stainless Steel Bar and Wire for Surgical Implants (UNS S31673)
Standard Specification for Wrought 18 Chromium-14 Nickel-2.5 Molybdenum Stainless Steel Bar and Wire for Surgical Implants (UNS S31673)
SCOPE
1.1 This specification covers the requirements for wrought 18 chromium-14 nickel-2.5 molybdenum stainless steel bar and wire used for the manufacture of surgical implants.
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information only.
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NOTICE: This standard has either been superceded and replaced by a new version or discontinued.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 138 – 00
Standard Specification for
Wrought 18 Chromium-14 Nickel-2.5 Molybdenum Stainless
1
Steel Bar and Wire for Surgical Implants (UNS S31673)
This standard is issued under the fixed designation F 138; 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.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 2.3 ASQ Standard:
C1 Specification of General Requirements for a Quality
1.1 This specification covers the requirements for wrought
6
Program
18 chromium-14 nickel-2.5 molybdenum stainless steel bar
and wire used for the manufacture of surgical implants.
3. General Requirements for Delivery
1.2 The values stated in inch-pound units are to be regarded
3.1 In addition to the requirements of this specification, all
as the standard. The SI units given in parentheses are for
requirements of the current editions of Specifications A 484/
information only.
A 484M and A 555/A 555M shall apply.
2. Referenced Documents 3.2 In the case where a conflict exists between this specifi-
cation and those listed in 2.1 and 2.2, this specification shall
2.1 ASTM Standards:
take precedence.
A 262 Practices for Detecting Susceptibility to Intergranu-
2
lar Attack in Austenitic Stainless Steels
4. Ordering Information
A 484/A 484M Specification for General Requirements for
2 4.1 Inquiries and orders for material under this specification
Stainless Steel Bars, Billets, and Forgings
shall include the following information:
A 555/A 555M Specification for General Requirements for
2 4.1.1 Quantity (weight or number of pieces),
Stainless Steel Wire and Wire Rods
4.1.2 ASTM designation,
A 751 Test Methods, Practices, and Terminology for
2
4.1.3 Form (bar, wire, fine wire),
Chemical Analysis of Steel Products
4.1.4 Condition (see 5.1),
E 8/E 8M Test Methods for Tension Testing of Metallic
3
4.1.5 Mechanical properties (if applicable, for special con-
Materials
ditions),
E 45 Test Methods for Determining the Inclusion Content
3
4.1.6 Finish (see 5.2),
of Steel
3 4.1.7 Applicable dimensions including size, thickness,
E 112 Test Methods for Determining Average Grain Size
width, and length (exact, random or multiples) or print number,
F 981 Practice for Assessment of Compatibility of Bioma-
and
terials for Surgical Implants with Respect to Effect of
4 4.1.8 Special requirements.
Materials in Muscle and Bone
F 1350 Specification for Stainless Steel Surgical Fixation
5. Materials and Manufacture
4
Wire
5.1 Condition:
2.2 ISO Standards:
5.1.1 Bar and wire shall be furnished, as specified, in the
ISO 5832–1 Implants for Surgery—Metallic Materials—
hot-worked, annealed, cold -worked, or extra hard condition
5
Part 1:Wrought Stainless Steel
5 (see Table 1).
ISO 6892 Metallic Materials—Tensile Testing
5.1.2 Fine wire shall be furnished, as specified, in the
cold-drawn condition (see Table 2).
5.2 Finish:
1
This specification is under the jurisdiction of ASTM Committee F-14 on
5.2.1 Types of finish available for bar and wire products are
Medical and Surgical Materials and Devices and is the direct responsibility of
Subcommittee F04.12 on Metallurgical Materials. cold-drawn, pickled, ground, ground and polished, or as
Current edition approved June 10, 2000. Published September 2000. Originally
specified in the purchase order.
published as F 138 – 71. Last previous edition F 138 – 97.
2
Annual Book of ASTM Standards, Vol 01.03.
3
Annual Book of ASTM Standards, Vol 03.01.
4
Annual Book of ASTM Standards, Vol 13.01.
5 6
Available from American National Standards Instititute, 1430 Broadway, New Available from American Society for Quality Control, 161 W. Wisconsin Ave.,
York, NY 10018. Milwaukee, WI 53203.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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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.
F138–00
TABLE 1 Mechanical Requirements, Wire and Bar
A B
Ultimate Tensile Elongation in Brinell
Yield Strength (0.2 %
Condition Diameter or Thickness, in. (mm) Strength, min, psi 4D or 4W, Hardness, max,
offset), min, psi (MPa)
(MPa) min, % HB
C
Hot-worked all . . . 250
Annealed 0.063 and over (1.60) 71 000 (490) 27 500 (190) 40 .
Cold-worked 0.063 to 1.500 (1.60 to 38.1) 125 000 (860) 100 000 (690) 12 .
Extra-hard 0.063 to 0.250 (1.60 to 6.35) 196 000 (1350) . . .
A
4D =4 3 diameter; 4W =4 3 width. Alternatively, a gage length corresponding
...
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