Astm F0136-11
Astm F0136-11
Astm F0136-11
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F136 – 11
4.6 Wire—Rounds, flats, or other shapes less than 0.1875 in. reporting all chemical requirements, except hydrogen. Samples
(4.76 mm) in diameter. for hydrogen shall be taken from the finished mill product. The
4.7 Other—Other forms and shapes, including tubing, may supplier shall not ship material with chemistry outside the
be provided by agreement between purchaser and supplier. requirements specified in Table 3.
7.1.1 Requirements for the major and minor elemental
5. Ordering Information constituents are listed in Table 3. Also listed are important
5.1 Include with inquiries and orders for material under this residual elements. Analysis for elements not listed in Table 3 is
specification the following information: not required to verify compliance with this specification.
5.1.1 Quantity, 7.2 Product Analysis:
5.1.2 ASTM designation and date of issue, 7.2.1 Product analysis tolerances do not broaden the speci-
5.1.3 Form (sheet, strip, plate, bar, forging bar, or wire), fied heat analysis requirements but cover variations between
5.1.4 Condition (See Section 3 and 6.3), laboratories in the measurement of chemical content. The
5.1.5 Mechanical properties (if applicable, for special con- product analysis tolerances shall conform to the product
ditions), tolerances in Table 4.
5.1.6 Finish (See 6.2), 7.2.2 The product analysis is either for the purpose of
5.1.7 Applicable dimensions including size, thickness, verifying the composition of a heat or manufacturing lot or
width, length, or drawing number, determining variations in the composition within the heat.
5.1.8 Special tests, if any, and 7.2.3 Acceptance or rejection of a heat or manufacturing lot
5.1.9 Other requirements. of material may be made by the purchaser on the basis of this
6. Materials and Manufacture product analysis. Product analysis outside the tolerance limits
allowed in Table 4 is cause for rejection of the product. A
6.1 The various titanium mill products covered in this referee analysis may be used if agreed upon by the supplier and
specification normally are formed with the conventional forg- purchaser.
ing and rolling equipment found in primary ferrous and
7.2.4 For referee purposes, use Test Methods E539, E1409,
nonferrous plants. The alloy is usually multiple melted in arc
E1447, E1941, and E2371 or other analytical methods agreed
furnaces (including furnaces such as plasma arc and electron
upon between the purchaser and the supplier.
beam) of a type conventionally used for reactive metals.
7.3 Samples for chemical analysis shall be representative of
6.2 Finish—The mill product may be furnished to the
the material being tested. The utmost care must be used in
implant manufacturer as mechanically descaled or pickled,
sampling titanium for chemical analysis because of its affinity
abrasively blasted, chemically milled, ground, machined,
for elements such as oxygen, nitrogen, and hydrogen. In
peeled, polished, combinations of these operations, or as
cutting samples for analysis, therefore, the operation should be
specified by the purchaser. On billets, bars, plates, and forg-
carried out insofar as possible in a dust-free atmosphere.
ings, it is permissible to remove minor surface imperfections
Cutting tools should be clean and sharp. Samples for analysis
by grinding if the resultant area meets the dimensional and
should be stored in suitable containers.
surface finish requirements of this specification.
6.3 Condition—Material shall be furnished in the annealed
or cold-worked condition. Mechanical properties for condi- 8. Mechanical Requirements
tions other than those listed in Table 1 and Table 2 may be 8.1 The material supplied under this specification shall
established by agreement between the supplier and the pur- conform to the mechanical property requirements in Table 1
chaser. and Table 2.
8.2 Specimens for tension tests shall be machined and tested
7. Chemical Requirements in accordance with Test Methods E8/E8M. Tensile properties
7.1 The heat analysis shall conform to the chemical com- shall be determined using a strain rate of 0.003 to 0.007
position specified in Table 3. Ingot analysis may be used for in./in./min (mm/mm/min) through yield and then the crosshead
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F136 – 11
TABLE 2 Annealed Mechanical Properties of Sheet, Strip, and Plate
ElongationA in 2 in. (50 mm), Bend Test
Reduction of AreaB min, %
min, % Mandrel DiameterC,D
TABLE 3 Chemical Requirements the elongation and reduction of area meet the minimum
Element
Composition, % requirements specified. Refer to subsections 7.11.4 and 7.12.5
(mass/mass) of Test Methods E8/E8M. If either the elongation or reduction
Nitrogen, max 0.05 of area is less than the minimum requirement, discard the test
Carbon, max 0.08
Hydrogen, max 0.012A
and retest. Retest one specimen for each specimen that did not
Iron, max 0.25 meet the minimum requirements.
Oxygen, max 0.13 8.3 For sheet and strip, the bend test specimen shall with-
Aluminum 5.5–6.50
Vanadium 3.5–4.5
stand being bent cold through an angle of 105° without fracture
TitaniumB balance in the outside surface of the bent portion. The bend shall be
A
Material 0.032 in. (0.813 mm) and under may have hydrogen content up to made around a mandrel which has a diameter equal to that
0.0150 %.
B
shown in Table 2. Test conditions shall conform to Test Method
The percentage of titanium is determined by difference and need not be
determined or certified.
E290.
8.3.1 Sheet, Strip, and Plate—Test according to Test Meth-
TABLE 4 Product Analysis ToleranceA
ods E8/E8M. Perform at least one tensile test from each lot in
both the longitudinal and transverse directions. Tests in the
Tolerance Under the Minimum or
Element Over the Maximum LimitB transverse direction need be made only on product from which
% (mass/mass) a specimen not less than 8.0 in. (200 mm) in length for sheet
Nitrogen 0.02 and 2.50 in. (64 mm) in length for plate can be taken. Should
Carbon 0.02 any of these test specimens not meet the specified require-
Hydrogen 0.0020
Iron 0.10
ments, test two additional test pieces representative of the same
Oxygen 0.02 lot, in the same manner, for each failed test specimen. The lot
Aluminum 0.40 will be considered in compliance only if all additional test
Vanadium 0.15
pieces meet the specified requirements.
A
See AMS 2249.
B
Under minimum limit not applicable for elements where only a minimum
percentage is indicated. 9. Special Requirements
9.1 The microstructure shall be a fine dispersion of the alpha
speed may be increased so as to produce fracture in approxi- and beta phases resulting from processing in the alpha plus beta
mately one additional minute. field. There shall be no continuous alpha network at prior beta
8.2.1 Bar, Forging Bar, Shapes, and Wire—Test according grain boundaries. There shall be no coarse, elongated alpha
to Test Methods E8/E8M. Should any test specimen not meet platelets.
the specified requirements, test two additional test pieces 9.2 Determine the beta transus temperature for each heat by
representative of the same lot, in the same manner, for each a suitable method and report on the material certification if
failed test specimen. The lot will be considered in compliance required by the purchaser.
only if all additional test pieces meet the specified require- 9.3 Alpha case is not permitted for products supplied with a
ments. machined, ground, or chemically milled surface finish. For
8.2.2 Tensile tests results for which any specimen fractures other products, there shall be no continuous layer of alpha case
outside the gage length shall be considered acceptable, if both $0.001 in. when examined at 1003 magnification.
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F136 – 11
10. Significance of Numerical Limits 12. Quality Program Requirements
10.1 The following applies to all specified numerical limits 12.1 The producer shall maintain a quality program as
in this specification. To determine conformance to these limits, defined in ASQ C1, ISO 9001, or similar quality program.
an observed or calculated value shall be rounded to the nearest
unit in the last right hand digit used in expressing the 13. Keywords
specification limit, in accordance with the rounding method of
Practice E29. 13.1 metals (for surgical implants); orthopedic medical
devices; titanium alloys; titanium alloys (for surgical implants)
11. Certification
11.1 The supplier shall provide a certification that the
material was tested in accordance with this specification. A
report of the test results shall be furnished to the purchaser at
the time of shipment.
APPENDIXES
(Nonmandatory Information)
X1. RATIONALE
X1.1 The purpose of this specification is to characterize the specification represent the current general consensus of opinion
chemical, physical, mechanical, and metallurgical properties of with respect to optimization of mechanical properties for
wrought annealed titanium-6aluminum-4vanadium ELI (extra implant applications.
low interstitial) alloy to be used in the manufacture of surgical
implants. X1.3 The minimum mechanical properties specified ensure
a baseline of strength and ductility for the highly stressed
X1.2 The microstructural requirements contained in this devices for which this alloy is typically used.
X2. BIOCOMPATIBILITY
X2.1 The alloy composition covered by this specification X2.2 No known surgical implant material has ever been
has been employed successfully in human implant applications shown to be completely free from adverse reactions in the
in contact with soft tissue and bone for over a decade. Due to human body. Long-term clinical experience of the use of the
the well-characterized level of biological response exhibited by material referred to in this specification, however, has shown
this alloy, it has been used as a control material in Practice that an acceptable level of biological response can be expected,
F981. if the material is used in appropriate applications.
SUMMARY OF CHANGES
Committee F04 has identified the location of selected changes to this standard since the last issue
(F136 – 08´1) that may impact the use of this standard. (Approved Dec. 15, 2011.)
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F136 – 11
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