ASTM F67-13(2017)

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:F67 −13 (Reapproved 2017)
Standard Specification for
Unalloyed Titanium, for Surgical Implant Applications (UNS
R50250, UNS R50400, UNS R50550, UNS R50700)
ThisstandardisissuedunderthefixeddesignationF67;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginal
adoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscript
epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* E1409TestMethodforDeterminationofOxygenandNitro-
gen in Titanium and TitaniumAlloys by Inert Gas Fusion
1.1 This specification covers the chemical, mechanical, and
E1447Test Method for Determination of Hydrogen in Tita-
metallurgical requirements for four grades of unalloyed tita-
nium and Titanium Alloys by Inert Gas Fusion Thermal
nium strip, sheet, plate, bar, billet, forging, and wire used for
Conductivity/Infrared Detection Method
the manufacture of surgical implants.
E1941Test Method for Determination of Carbon in Refrac-
1.2 The values stated in either SI units or inch-pound units
toryandReactiveMetalsandTheirAlloysbyCombustion
are to be regarded separately as standard. The values stated in
Analysis
each system may not be exact equivalents; therefore, each
E2371Test Method for Analysis of Titanium and Titanium
system shall be used independently of the other. Combining
AlloysbyDirectCurrentPlasmaandInductivelyCoupled
values from the two systems may result in non-conformance
Plasma Atomic Emission Spectrometry (Performance-
with the standard.
Based Test Methodology)
1.3 This international standard was developed in accor-
E2626Guide for Spectrometric Analysis of Reactive and
dance with internationally recognized principles on standard- Refractory Metals
ization established in the Decision on Principles for the
F981Practice for Assessment of Compatibility of Biomate-
Development of International Standards, Guides and Recom- rials for Surgical Implants with Respect to Effect of
mendations issued by the World Trade Organization Technical
Materials on Muscle and Insertion into Bone
Barriers to Trade (TBT) Committee. IEEE/ASTM SI 10American National Standard for Metric
Practice
2. Referenced Documents
2.2 Aerospace Material Specification:
AMS 2249Chemical Check Analysis Limits, Titanium and
2.1 ASTM Standards:
Titanium Alloys
B265Specification for Titanium and Titanium Alloy Strip,
AMS 2380Approval and Control of Premium Quality Tita-
Sheet, and Plate
nium Alloys
B348Specification for Titanium and Titanium Alloy Bars
AMS 2631Ultrasonic Inspection TitaniumAlloy Bar, Billet
and Billets
and Plate
B381Specification for Titanium and Titanium Alloy Forg-
2.3 ISO Standards:
ings
ISO 5832-2Implants for Surgery—Metallic Materials—
E8/E8MTest Methods for Tension Testing of Metallic Ma-
Unalloyed Titanium
terials
ISO 6892Metallic Materials—Tensile Testing at Ambient
E29Practice for Using Significant Digits in Test Data to
Temperature
Determine Conformance with Specifications
ISO 9001Quality Management Systems
E290Test Methods for Bend Testing of Material for Ductil-
ity
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
This specification is under the jurisdiction of ASTM Committee F04 on
3.1.1 lot, n—the total number of mill products produced
Medical and Surgical Materials and Devices and is the direct responsibility of
from the same melt heat under the same conditions at essen-
Subcommittee F04.12 on Metallurgical Materials.
tially the same time.
Current edition approved March 1, 2017. Published April 2017. Originally
approved in 1966. Last previous edition approved in 2013 as F67–13. DOI:
10.1520/F0067-13R17.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from Society of Automotive Engineers (SAE), 400 Commonwealth
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Dr., Warrendale, PA 15096-0001.
Standards volume information, refer to the standard’s Document Summary page on Available from American Society for Quality (ASQ), 600 N. Plankinton Ave.,
the ASTM website. Milwaukee, WI 53203.
*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
F67−13 (2017)
A
TABLE 2 Product Analysis Tolerances
3.1.2 cold work, n—any mechanical deformation process
Limit or Maximum of Tolerance Under the
performed below the recrystallization temperature which re-
Element Specified Range %, Minimum or Over the
sults in strain hardening of the material.
B
(mass/mass) Maximum Limit
3.1.3 hot work, n—any mechanical deformation process
Nitrogen up to 0.05 0.02
Carbon 0.10 0.02
performed above the recrystallization temperature.
Hydrogen up to 0.015 0.0020
3.1.4 alpha case, n—oxygen, nitrogen or carbon-enriched,
Iron up to 0.25 0.10
Iron over 0.25 0.15
alpha-stabilized surface which results from elevated tempera-
Oxygen up to 0.20 0.02
ture exposure.
Oxygen over 0.20 0.03
A
Refer to AMS 2249.
4. Product Classification
B
Under minimum limit not applicable for elements where only a maximum
percentage is indicated.
4.1 ProductclassificationsareconsistentwithSpecifications
B265, B348, and B381.
4.1.1 Strip—Any product 0.188 in. (4.76 mm) and under in
thickness and less than 24 in. (610 mm) wide.
4.1.2 Sheet—Any product 0.188 in. (4.76 mm) and under in
5.1.4 Form (sheet, strip, plate, bar, billet, forging, wire, or
thickness and 24 in. (610 mm) or more in width.
other forms),
4.1.3 Plate—Any product 0.188 in. (4.76 mm) thick and
5.1.5 Condition (see 6.1),
over and 10 in. (254 mm) wide and over, with widths greater
5.1.6 Mechanical properties (if applicable, for special
than five times thickness. Plate up to 4 in. (102 mm), thick
conditions),
inclusive is covered by this specification.
5.1.7 Finish (see 6.2),
4.1.4 Bar—Rounds, flats, or other shapes from 0.188 in.
5.1.8 Applicable dimensions and tolerances including size,
(4.76 mm) to 4 in. (102 mm) in diameter or thickness. (Other
thickness, width, and length (exact, random, multiples) or
sizes and shapes by special order.)
drawing number,
4.1.5 Forging bar—Bar as described in 4.1.4 used in the
5.1.9 Special tests (if any), and
production of forgings. This product may be furnished in the
5.1.10 Other requirements.
hot worked condition.
4.1.6 Billet—A solid semi-finished section hot rolled or
6. Manufacture
forgedfromaningot,withacrosssectionalareagreaterthan16
6.1 Condition—Material shall be furnished in the hot-
2 2
in. (10322 mm ) whose width is less than 5 times its
worked, cold-worked, forged, annealed, or stress-relieved con-
thickness.
dition.
4.1.7 Forging—Any product of work on metal formed to a
6.2 Finish—The mill product may be furnished as descaled
desired shape by impact or pressure in hammers, forging
or pickled, abrasive blasted, chemically milled, ground,
machines, upset presses, or related forming equipment.
machined, peeled, polished, or as specified by the purchaser.
4.1.8 Wire—Rounds,flatsorothershapeslessthan0.188in.
On billets, bars, plates, and forgings, it is permissible to
(4.76 mm) in diameter or thickness.
remove minor surface imperfections by spot grinding if such
4.1.9 Other—Other forms and shapes, including tubing,
grinding does not reduce the dimension below the minimum
may be provided by agreement between purchaser and sup-
permitted by the dimensional tolerance ordered.
plier.
5. Ordering Information 7. Chemical Composition
5.1 Inquiriesandordersformaterialunderthisspecification 7.1 The heat analysis shall conform to the chemical com-
shall include the following information: positionofTable1.Ingotanalysismaybeusedforreportingall
5.1.1 Quantity (weight or number of pieces), chemical requirements, except hydrogen. Samples for hydro-
5.1.2 Grade (1, 2, 3, or 4), genshallbetakenfromthefinishedmillproduct.Suppliershall
5.1.3 ASTM designation and date of issue, not ship material with chemistry outside the requirements
5.1.3.1 Units to be certified – SI or inch-pound, specified in Table 1 for the applicable grade.
TABLE 1 Chemical Requirements
A
Composition , % (mass/mass)
Element
Grade 1 Grade 2 Grade 3 Grade 4
UNS R50250 UNS R50400 UNS R50550 UNS R50700
Nitrogen, max 0.03 0.03 0.05 0.05
Carbon, max 0.08 0.08 0.08 0.08
B
Hydrogen, max 0.015 0.015 0.015 0.015
Iron, max 0.20 0.30 0.30 0.50
Oxygen, max 0.18 0.25 0.35 0.40
Titanium balance balance balance balance
A
Forgings are designated Grade F-1, F-2, F-3, or F-4 respectively. Forging compositions are as specified in Table 1.
B
Maximum hydrogen content for billet is 0.0100 wt%.
F67−13 (2017)
TABLE 3 Mechanical Requirements: Annealed-Bar, Billet,
8.2 Specimens for tension tests shall be prepared and tested
A
Forgings, and Other Forms
in accordance with Test Methods E8/E8M. Tensile properties
Yield Strength,
shall be determined using a strain rate of 0.003 to 0.007
Tensile Strength, B
Reduction
Elongation
0.2 % Offset,
min
Grade in 4D, of Area,
in/in/min (mm/mm/min) through yield and then the crosshead
min
C
min, %
min, %
speed may be increased so as to produce fracture in approxi-
ksi MPa ksi MPa
mately one additional minute. Tensile tests results for which
1 35 240 25 170 24 30
2 50 345 40 275 20 30
any specimen fractures outside the gage length shall be
3 65 450 55 380 18 30
considered valid, if both the elongation and reduction of area
4 80 550 70 483 15 25
meet the minimum requirements specified. Refer to sections
A
These properties apply to forgings having a maximum cross section area not
2 2
7.11.4 and 7.12.5 of Test Methods E8/E8M. If either the
greater than 3 in. (1935 mm ). Mechanical properties of forgings having greater
cross sections shall be negotiated between the manufacturer and the purchaser.
elongation or reduction of area is less than the minimum
B
Elongation of material 0.063 in. (1.6 mm) or greater in diameter (D) or width (W)
requirement, invalidate the specimen and retest. Retest one
shall be measured using a gauge length of 2 in. or 4D or 4W. The gauge length
specimen for each specimen that did not meet the minimum
must be reported with the test results. The method for determining elongation of
material under 0.063 in. (1.6 mm) in diameter or thickness may be negotiated.
requirements.
Alternatively, a gauge length corresponding to ISO 6892 may be used when
8.2.1 Bar, Forging Bar, Shapes, and Wire—Test according
agreed upon between supplier and purchaser. (5.65 times the square root of So,
where So is the original cross sectional area.)
to Test Methods E8/E8M. Should any test specimen not meet
C
Reduction of area not required for tubing.
the specified requirements, test two additional test pieces
representative of the same lot, in the same manner, for each
failed test specimen. The lot will be considered in compliance
7.1.1 Requirements for the major and minor elemental
onlyifalladditionaltestpiecesmeetthespecifiedrequirements
constituents are listed in Table 1. Also listed are important
8.2.2 Tension testing of wire shall be conducted in accor-
residualelements.AnalysisforelementsnotlistedinTable1is
dance with Test Methods E8/E8M Tension testing shall be
not required to verify compliance with this specification.
conducted using the appropriate gauge length, shown in Table
7.2 Product Analysis—
5, for the size wire being tested. For wire sizes ≥0.0625 in.
7.2.1 Product analysis tolerances do not broaden the speci-
(≥1.59 mm) (4D gauge length) a strain rate of 0.003 to 0.007
fied heat analysis requirements but cover variations in the
in./in. (mm/mm)/min through the specified yield strength shall
measurement of chemical content between laboratories. The
be used and then the crosshead speed shall be increased so as
product analysis tolerances shall conform to the product
to produce fracture in approximately one additional minute.
tolerances in Table 2.
For wire diameters less than 0.0625 in. (1.59 mm) a crosshead
7.2.2 The product analysis is either for the purpose of
speedof0.5to1.0in./min(12.7to25.4mm/min)shallbeused.
verifying the composition of a heat or manufacturing lot or to
Once yielding has begun, the crosshead speed may be in-
determine variations in the composition within the heat.
creased to a maximum of 3.0 in./min (76.2 mm/min).
7.2.3 Acceptance or rejection of a heat or manufacturing lot
8.2.3 Sheet, Strip, and Plate—Test according to Test Meth-
of material may be made by the purchaser on the basis of this
ods E8/E8M. Tests in the transverse direction need be made
product analysis. Product analyses outside the toler
...