1、Designation: B 367 08Standard Specification forTitanium and Titanium Alloy Castings1This standard is issued under the fixed designation B 367; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. A number in p
2、arentheses indicates the year of last reapproval. Asuperscript epsilon () 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. Scope1.1 This specification covers titanium and titanium alloycastings int
3、ended for general corrosion resistant and industrialapplications.1.2 This specification is intended for use of purchasersand/or producers of reactive metal castings for defining therequirements and assuring the properties of castings for uniquecorrosion-resistant applications, that is, not for commo
4、dityitems which must meet all potential purchasers requirements.1.2.1 Users are advised to use the specification as a basis forobtaining castings which will meet minimum acceptancerequirements established and revised by consensus of themembers of the committee.1.2.2 User requirements considered more
5、 stringent may bemet by the addition to the purchase order of one or moresupplementary requirements, which may include, but are notlimited to, those listed in Sections S1 through S8.1.3 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathemati
6、calconversions to SI units that are provided for information onlyand are not considered standard.2. Referenced Documents2.1 ASTM Standards:2A 802/A 802M Practice for Steel Castings, Surface Accep-tance Standards, Visual ExaminationE8 Test Methods for Tension Testing of Metallic MaterialsE10 Test Met
7、hod for Brinell Hardness of Metallic Materi-alsE18 Test Methods for Rockwell Hardness of MetallicMaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE94 Guide for Radiographic ExaminationE 120 Test Methods for Chemical Analysis of Titanium andTi
8、tanium Alloys3E 142 Test Method for Controlling Quality of RadiographicTesting3E 165 Test Method for Liquid Penetrant ExaminationE 446 Reference Radiographs for Steel Castings Up to 2 in.51 mm in Thickness3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 lot, nshall consist of a
9、ll castings of the same designproduced from the same pour.3.1.2 pour, nshall consist of all material melted and castat one time.4. Ordering Information4.1 Orders for castings to this specification shall include thefollowing as required, to describe the requirements adequately:4.1.1 Description of th
10、e castings by pattern number ordrawing. Dimensional tolerances shall be included on thecasting drawing,4.1.2 Quantity,4.1.3 Grade designation (see Table 1),4.1.4 Options in the specification, and4.1.5 Supplementary requirements desired, including thestandards of acceptance.5. Materials and Manufactu
11、re5.1 Materials for this specification shall be melted byconventional processes used for reactive metals. Typical meth-ods include the consumable electrode and induction-slag,plasma arc, induction-skull, and electron beam melting pro-cesses.1This specification is under the jurisdiction of ASTM Commi
12、ttee B10 onReactive and Refractory Metals and Alloys and is the direct responsibility ofSubcommittee B10.01 on Titanium.Current edition approved May 15, 2008. Published June 2008. Originallyapproved in 1961. Last previous edition approved in 2006 as B 367 06a.2For referenced ASTM standards, visit th
13、e ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 1
14、9428-2959, United States.6. Chemical Composition6.1 Pour AnalysisAn analysis of each pour shall be madeby the producer from a sample such as a casting or test bar thatis representative of the pour. The chemical composition deter-mined shall conform to the requirements specified for therelevant grade
15、 in Table 1.6.1.1 The elements listed in Table 1 are intentional alloyadditions or elements which are inherent to the manufacture oftitanium sponge, ingot or mill product.6.1.1.1 Elements other than those listed in Table 1 aredeemed to be capable of occurring in the grades listed in Table1 by and on
16、ly by way of unregulated or unanalyzed scrapadditions to the ingot melt. Therefore product analysis forelements not listed in Table 1 shall not be required unlessspecified and shall be considered to be in excess of the intentof this specification.6.1.2 Elements intentionally added to the melt must b
17、eidentified, analyzed, and reported in the chemical analysis.6.2 When agreed upon by the producer and the purchaserand requested by the purchaser in his written purchase order,chemical analysis shall be completed for specific residualelements not listed in this specification.6.3 Product AnalysisProd
18、uct analysis tolerances do notbroaden the specified heat analysis requirements, but covervariations between laboratories in the measurement of chemi-cal content. The producer shall not ship material which isoutside the limits specified in Table 1 for the applicable grade.Product analysis limits shal
19、l be as specified in Table 2.6.4 SamplingSamples for chemical analysis may be madeby the purchaser on a representative casting from any lot. DueTABLE 1 Chemical RequirementsElementComposition, Weight %GradeC-2GradeC-3GradeC-5GradeC-6GradeC-12GradeTi-Pd7AGradeTi-Pd8BGradeTi-Pd16GradeTi-Pd17GradeTi-Pd
20、18GradeC-38Nitrogen, max 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.03 0.03 0.05 0.03Carbon, max 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.08Hydrogen, max 0.015 0.015 0.015 0.015 0.015 0.015 0.015 0.0150 0.0150 0.0150 0.015Iron, maxor range0.20 0.25 0.40 0.50 0.30 0.20 0.25 0.30 0.20 0.25 1.21.8
21、Oxygen, maxor range0.40 0.40 0.25 0.20 0.25 0.40 0.40 0.25 0.18 0.15 0.200.30Aluminum . . 5.56.75 4.006.00 . . . . . 2.53.5 3.54.5Vanadium . . 3.54.5 . . . . . . 2.03.0 2.03.0Tin . . . 2.03.0 . . . . . . .Ruthenium . . . . . . . . . . .Palladium . . . . . 0.12 min 0.12 min 0.040.08B0.040.08B0.040.08
22、A.Cobalt . . . . . . . . . . .Molybdenum . . . . 0.20.4 . . . . .Chromium . . . . . . . . . . .Nickel . . . . 0.60.9 . . . . . .Niobium . . . . . . . . . . .Zirconium . . . . . . . . . . .Silicon . . . . . . . . . . .Residuals,C,D,Emax each. . . . . . . . . . 0.1Residuals,C,D,Emax total. . . . . . .
23、 . . . 0.4TitaniumF. . . . . . . . . . balanceOther elements(each), maxG0.10 0.10 0.10 0.10 0.1 0.10 0.10 0.10 0.10 0.10 .Other elements(total), maxG0.40 0.40 0.40 0.40 0.4 0.40 0.40 0.40 0.40 0.40 .AGrade 18Palladium added to titanium alloy 3AI-2.5V to enhance corrosion properties.BGrade TiPd16 and
24、 TiPd17Unalloyed titanium with reduced palladium content to enhance corrosion properties are similar to Grade TiPd, 7B and 8A.CNeed not be reported.DA residual is an element present in a metal or an alloy in small quantities and is inherent to the manufacturing process but not added intentionally. I
25、n titanium theseelements include aluminum, vanadium, tin, chromium, molybdenum, niobium, zirconium, hafnium, bismuth, ruthenium, palladium, yttrium, copper, silicon, cobalt, tantalum,nickel, boron, manganese, and tungsten.EThe purchaser may, in his written purchase order, request analysis for specif
26、ic residual elements not listed in this specification.FThe percentage of titanium is determined by difference.GNeed not be reported. By agreement between producer and purchaser, analysis may be required and limits established for elements or compounds not specified inthis table. Corrected editoriall
27、y.TABLE 2 Check Analysis TolerancesElementMaximum or Range,Weight %Permissible Variation inCheck AnalysisNitrogen 0.05 +0.02Carbon 0.10 +0.02Hydrogen 0.015 +0.003Iron 1.21.8 60.20Iron 0.50 +0.150.40 +0.080.25 +0.050.20 +0.04Oxygen 0.250.20+ 0.05+ 0.04Aluminum 2.56.75 60.40Vanadium 2.04.5 60.15Tin 2.
28、03.0 60.15Palladium 0.040.25 60.02Molybdenum 0.20.4 60.04Nickel 0.30.9 60.05Other (each) 0.10 +0.02B367082to the possibility of oxygen or other interstitial contamination,samples for oxygen, carbon, hydrogen, and nitrogen analysisshall be taken no closer than14 in. (6.3 mm) to a cast surfaceexcept t
29、hat castings too thin for this shall be analyzed onrepresentative material. The chemical composition determinedshall conform to the analysis in Table 1 within the checkanalysis variations shown in Table 2 or shall be subject torejection by the purchaser.6.5 Referee AnalysisIn the event of disagreeme
30、nt betweenthe producer and purchaser concerning the analysis of anycasting, Test Methods E 120 shall be used as a referee chemicalanalysis method.7. Heat Treatment7.1 Unless otherwise specified in the contract, all castingswill be supplied in the as-cast condition except when post-weldheat treatment
31、 is required.7.2 If post-weld heat treatment is required, it shall consist ofa stress relief performed at 1075 6 25F (580 6 14C) forGrades C-2, C-3, C-12, Ti-Pd7B, Ti-Pd8A, Ti-Pd16 andTi-Pd17, and 1200 6 25F (650 6 14C) for Grades C-5, C-6,Ti-Pd18, and C-38. Time at temperature shall be a minimum of
32、12 h plus an additional12 h at temperature per inch of thicknessfor section sizes greater than 1 in. (25 mm). After heattreatment, the castings should be cooled in air or in the furnaceto ambient temperature unless otherwise agreed upon betweenthe purchaser and producer.8. Workmanship, Finish, and A
33、ppearance8.1 All castings shall be made in a workman-like mannerand shall conform to the dimensions in drawings furnished bythe purchaser before manufacturing is started. If the pattern issupplied by the purchaser, the dimensions of the casting shallbe as predicted by the pattern.8.2 The surface of
34、the casting shall be free of adhering moldmaterial, scale, cracks, and hot tears as determined by visualexamination. Other surface discontinuities shall meet the visualacceptance standards specified in the order. Practice A 802/A 802M or other visual standards may be used to defineacceptable surface
35、 discontinuities and finish. Unacceptablesurface discontinuities shall be removed and their removalverified by visual examination of the resultant cavities.9. Repair by Welding9.1 If repairs are required, these shall be made using awelding procedure and operators certified to quality require-ments e
36、stablished by the producer. The procedures developedshall be consistent with standard practices recommended forreactive metal alloys. The producer shall maintain documenta-tion on procedure and welder qualifications. Procedure modi-fications or special arrangements shall be as agreed uponbetween the
37、 producer and the purchaser.9.2 The composition of the deposited weld metal shall bewithin the chemical requirements for each grade established inTable 1.9.2.1 Unalloyed titanium Grades C-2 and C-3, and low-alloy Grades C-12, Ti-Pd7B, Ti-Pd8A, Ti-Pd16, and Ti-Pd17castings shall be stress-relieved if
38、 the repair is consideredcapable of adding stresses that will interfere with the purposefor which the castings are intended. The decision for stressrelieving shall be made by the producer, unless otherwiseagreed upon. The stress-relief cycle shall be in accordance with7.2 followed by air or furnace
39、cooling to room temperature, oras agreed upon between the purchaser and the producer.9.2.2 Grade C-5 (Ti-6Al-4V), Grade C-6 (Ti-5Al-2.5Sn),Grade Ti-Pd18, and C-38 castings shall be stress-relieved afterweld repair, if the weld defect or excavation is through a wallor exceeds 1 in.3(16 000 mm3) of de
40、posited metal.All welds onGrade C-12 (Ti-.3Mo-.8Ni) castings shall be stress-relievedafter weld repair. The stress-relief cycle shall be in accordancewith 7.2.9.2.3 Hot isostatic pressing (HIP) may be substituted forrequired thermal treatment provided all requirements for thattreatment are met, and
41、temperatures detrimental to the materialproperties are not reached.10. Inspection10.1 The producer shall afford the purchasers inspector allreasonable facilities necessary to satisfy him that the materialis being produced and furnished in accordance with thisspecification. Foundry inspection by the
42、purchaser shall notinterfere unnecessarily with the producers operations.10.2 If the results of any chemical or mechanical propertytest lot are not in conformance with the requirements of thisspecification, the lot may be retested at the option of theproducer. The frequency of the retest will double
43、 the initialnumber of tests. If the results of the retest conform to thespecification, then the retest values will become the test valuesfor certification. Only original conforming test results or theconforming retest results shall be reported to the purchaser. Ifthe results for the retest fail to c
44、onform to the specification, thematerial will be rejected in accordance with Section 11.10.3 For purposes of determining conformance with thespecifications contained herein, an observed or a calculatedvalue shall be rounded off to the nearest unit in the lastright-hand significant digit used in expr
45、essing the limitingvalue. This is in accordance with the round-off method ofPractice E29.11. Rejection11.1 Any rejection based on test reports shall be reported tothe producer within 60 days from the receipt of the test reportsby the purchaser.11.2 Material that shows unacceptable discontinuities as
46、determined by the acceptance standards specified on the order,subsequent to acceptance at the producers works, may berejected, and the producer shall be notified within 60 days, oras otherwise agreed upon.11.3 In the event of disagreement between the producer andthe purchaser on the conformance of t
47、he material to therequirements of this specification, a mutually acceptable ref-eree shall perform the tests in question. The referees testingshall be used in determining the conformance of the material tothis specification.B36708312. Certification12.1 The manufacturer shall supply at least one copy
48、 of thereport certifying that the material supplied has been manufac-tured, inspected, sampled, and tested in accordance with therequirements of this specification and that the results ofchemical analysis, tensile, and other tests meet the require-ments of this specification for the grade specified.
49、 The reportshall include results of all chemical analysis, tensile tests, andall other tests required by the specification.13. Product Marking13.1 Unless otherwise specified, the following shall apply.13.1.1 Castings shall be marked for material identificationwith the ASTM designation number (Specification B 367) andgrade symbol, that is, C2, C3, C5, C6, C12, Ti-Pd7B, Ti-Pd8A,Ti-Pd16, Ti-Pd17, Ti-Pd18, or C-38.13.1.2 The producers name or identification mark and thepattern number shall be cast or stamped using low stressstamps on all c
