ASTM B367-93(1998)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: B 367 – 93 (Reapproved 1998)
Standard Specification for
Titanium and Titanium Alloy Castings
This standard is issued under the fixed designation B 367; 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 E 120 Test Methods for Chemical Analysis of Titanium and
Titanium Alloys
1.1 This specification covers titanium and titanium alloy
E 142 Test Method for Controlling Quality of Radiographic
castings intended for general corrosion resistant and industrial
Testing
applications.
E 165 Test Method for Liquid Penetrant Examination
1.2 This specification is intended for use of purchasers
E 446 Reference Radiographs for Steel Castings Up to 2 in.
and/or producers of reactive metal castings for defining the
(51 mm) in Thickness
requirements and assuring the properties of castings for unique
E 1409 Test Method for Determination of Oxygen in Tita-
corrosion-resistant applications, that is, not for commodity
nium and Titanium Alloys by the Inert Gas Fusion Tech-
items which must meet all potential purchasers’ requirements.
nique
1.2.1 Users are advised to use the specification as a basis for
E 1447 Test Method for Determination of Hydrogen in
obtaining castings which will meet minimum acceptance
Titanium and Titanium Alloys by the Inert Gas Fusion
requirements established and revised by consensus of the
Thermal Conductivity Method
members of the committee.
1.2.2 User requirements considered more stringent may be
3. Terminology
met by the addition to the purchase order of one or more
3.1 Definitions of Terms Specific to This Standard:
supplementary requirements, which may include, but are not
3.1.1 lot—shall consist of all castings of the same design
limited to, those listed in Sections S1 through S8.
produced from the same pour.
1.3 The values stated in inch-pound units are to be regarded
3.1.2 pour—shall consist of all material melted and cast at
as the standard. The values given in parentheses are for
one time.
information only.
4. Ordering Information
2. Referenced Documents
4.1 Orders for castings to this specification shall include the
2.1 ASTM Standards:
following as required, to describe the requirements adequately:
A 802/802M Practice for Steel Castings, Surface Accep-
2 4.1.1 Description of the castings by pattern number or
tance Standards, Visual Examination
3 drawing. Dimensional tolerances shall be included on the
E 8 Test Methods for Tension Testing of Metallic Materials
casting drawing,
E 10 Test Method for Brinell Hardness of Metallic Materi-
3 4.1.2 Quantity,
als
4.1.3 Grade designation (see Table 1),
E 18 Test Methods for Rockwell Hardness and Rockwell
3 4.1.4 Options in the specification, and
Superficial Hardness of Metallic Materials
4.1.5 Supplementary requirements desired, including the
E 29 Practice for Using Significant Digits in Test Data to
4 standards of acceptance.
Determine Conformance with Specifications
E 94 Guide for Radiographic Testing
5. Materials and Manufacture
5.1 Materials for this specification shall be melted by
1 conventional processes used for reactive metals. Typical meth-
This specification is under the jurisdiction of ASTM Committee B-10 on
Reactive and Refractory Metals and Alloysand is the direct responsibility of ods include the consumable electrode and induction-slag,
Subcommittee B10.05on Castings.
plasma arc, induction-skull, and electron beam melting pro-
Current edition approved Aug. 15, 1993. Published November 1993. Originally
cesses.
published as B 367 – 61 T. Last previous edition B 367 – 87.
Annual Book of ASTM Standards, Vol 01.02.
Annual Book of ASTM Standards, Vol 03.01.
4 6
Annual Book of ASTM Standards, Vol 14.02. Annual Book of ASTM Standards, Vol 03.05.
5 7
Annual Book of ASTM Standards, Vol 03.03. Annual Book of ASTM Standards, Vol 03.06.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
B 367 – 93 (1998)
TABLE 1 Chemical Requirements
Composition, Weight %
Element
Grade Grade Grade Grade Grade Grade Grade Grade Grade
C-2 C-3 C-5 C-6 Ti-Pd7B Ti-Pd8A Ti-Pd16 Ti-Pd17 Ti-Pd18
Nitrogen, max 0.05 0.05 0.05 0.05 0.05 0.05 0.03 0.03 0.05
Carbon, max 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10
Hydrogen, max 0.015 0.015 0.015 0.015 0.015 0.015 0.0150 0.0150 0.0150
Iron, max 0.20 0.25 0.40 0.50 0.20 0.25 0.30 0.20 0.25
Oxygen, max 0.40 0.40 0.25 0.20 0.40 0.40 0.18 0.25 0.15
Aluminum . . 5.5–6.75 4.00–6.00 . . . . 2.5–3.5
Vanadium . . 3.5–4.5 . . . . . 2.0–3.0
Tin . . . 2.0–3.0 . . . . .
A A B
Palladium . . . . 0.12 min 0.12 min 0.04–0.08 0.04–0.08 0.04–0.08
Other elements 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10
C
(each), max
Other elements 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40
C
(total), max
A
Grade TiPd16 and TiPd17—Unalloyed titanium with reduced palladium content to enhance corrosion properties are similar to Grade TiPd, 7B and 8A.
B
Grade 18—Palladium added to titanium alloy 3AI-2.5V to enhance corrosion properties.
C
Need not be reported. By agreement between producer and purchaser, analysis may be required and limits established for elements or compounds not specified in
this table.
TABLE 2 Check Analysis Tolerances
Maximum or Range, Permissible Variation in
6. Chemical Composition
Element
Weight% Check Analysis
6.1 Pour Analysis—An analysis of each pour shall be made
Nitrogen 0.05 +0.02
by the producer from a sample such as a casting or test bar that
Carbon 0.10 +0.02
Hydrogen 0.015 +0.003
is representative of the pour. The chemical composition deter-
Iron 0.50 +0.15
mined shall conform to the requirements specified for the
0.40 +0.08
relevant grade in Table 1.
0.25 +0.05
0.20 +0.04
6.1.1 The elements listed in Table 1 are intentional alloy
Oxygen 0.40 +0.08
additions or elements which are inherent to the manufacture of
0.25 + 0.05
titanium sponge, ingot or mill product. 0.20 + 0.04
Aluminum 2.5–6.75 60.40
6.1.1.1 Elements other than those listed in Table 1 are
Vanadium 2.0–4.5 60.15
deemed to be capable of occurring in the grades listed in Table Tin 2.0–3.0 60.15
Palladium 0.04–0.25 60.02
1 by and only by way of unregulated or unanalyzed scrap
Other (each) 0.10 +0.02
additions to the ingot melt. Therefore product analysis for
elements not listed in Table 1 shall not be required unless
specified and shall be considered to be in excess of the intent
6.5 Referee Analysis—In the event of disagreement between
of this specification.
the producer and purchaser concerning the analysis of any
6.1.2 Elements intentionally added to the melt must be
casting, Test Methods E 120 shall be used as a referee chemical
identified, analyzed, and reported in the chemical analysis.
analysis method.
6.2 When agreed upon by the producer and the purchaser
and requested by the purchaser in his written purchase order, 7. Heat Treatment
chemical analysis shall be completed for specific residual
7.1 Unless otherwise specified in the contract, all castings
elements not listed in this specification.
will be supplied in the as-cast condition except when post-weld
6.3 Product Analysis—Product analysis tolerances do not
heat treatment is required.
broaden the specified heat analysis requirements, but cover
7.2 If post-weld heat treatment is required, it shall consist of
variations between laboratories in the measurement of chemi-
a stress relief performed at 1075 6 25°F (580 6 14°C) for
cal content. The producer shall not ship material which is
Grades C-2, C-3 Ti-Pd7B, Ti-Pd8A, Ti-Pd16 and Ti-Pd17, and
outside the limits specified in Table 1 for the applicable grade.
12006 25°F (6506 14°C) for Grades C-5, C-6, and Ti-Pd18.
Product analysis limits shall be as specified in Table 2. 1
Time at temperature shall be a minimum of ⁄2h plus an
6.4 Sampling—Samples for chemical analysis may be made additional ⁄2 h at temperature per inch of thickness for section
by the purchaser on a representative casting from any lot. Due sizes greater than 1 in. (25 mm). After heat treatment, the
to the possibility of oxygen or other interstitial contamination, castings should be cooled in air or in the furnace to ambient
samples for oxygen, carbon, hydrogen, and nitrogen analysis temperature unless otherwise agreed upon between the pur-
shall be taken no closer than ⁄4 in. (6.3 mm) to a cast surface chaser and producer.
except that castings too thin for this shall be analyzed on
8. Workmanship, Finish, and Appearance
representative material. The chemical composition determined
shall conform to the analysis in Table 1 within the check 8.1 All castings shall be made in a workman-like manner
analysis variations shown in Table 2 or shall be subject to and shall conform to the dimensions in drawings furnished by
rejection by the purchaser. the purchaser before manufacturing is started. If the pattern is
B 367 – 93 (1998)
supplied by the purchaser, the dimensions of the casting shall 10.2 If the results of any chemical or mechanical property
be as predicted by the pattern. test lot are not in conformance with the requirements of this
specification, the lot may be retested at the option of the
8.2 The surface of the casting shall be free of adhering mold
producer. The frequency of the retest will double the initial
material, scale, cracks, and hot tears as determined by visual
number of tests. If the results of the retest conform to the
examination. Other surface discontinuities shall meet the visual
specification, then the retest values will become the test values
acceptance standards specified in the order. Practice A 802/
for certification. Only original conforming test results or the
802M or other visual standards may be used to define accept-
conforming retest results shall be reported to the purchaser. If
able surface discontinuities and finish. Unacceptable surface
the results for the retest fail to conform to the specification, the
discontinuities shall be removed and their removal verified by
material will be rejected in accordance with Section 11.
visual examination of the resultant cavities.
10.3 For purposes of determining conformance with the
specifications contained herein, an observed or a calculated
9. Repair by Welding
value shall be rounded off to the nearest unit in the last
9.1 If repairs are required, these shall be made using a
right-hand significant digit used in expressing the limiting
welding procedure and operators certified to quality require-
value. This is in accordance with the round-off method of
ments established by the pro
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