1、Designation: B 299 01Standard Specification forTitanium Sponge1This standard is issued under the fixed designation B 299; 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 parentheses indicates
2、the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers virgin titanium metal meltingstock. This virgin metal is commonly designated as spongetitanium because it is most commonly porous and sponge
3、like intexture, although metal produced electrolytically is granularand is essentially nonporous.1.2 The values stated in inch-pound units are to be regardedas the standard. The values given in parentheses are forinformation only.2. Referenced Documents2.1 ASTM Standards:E 10 Test Method for Brinell
4、 Hardness of Metallic Materi-als2E 120 Test Methods for Chemical Analysis of Titanium andTitanium Alloys33. Terminology3.1 Lot Definitions:3.1.1 castingsa lot shall consist of all castings producedfrom the same pour.3.1.2 ingotno definition required.3.1.3 rounds, flats, tubes, and wrought powder met
5、allurgicalproducts (single definition, common to nuclear and non-nuclear standards)a lot shall consist of a material of thesame size, shape, condition, and finish produced from the sameingot or powder blend by the same reduction schedule and thesame heat treatment parameters. Unless otherwise agreed
6、between manufacturer and purchaser, a lot shall be limited tothe product of an 8 h period for final continuous anneal, or toa single furnace load for final batch anneal.3.1.4 spongea lot shall consist of a single blend producedat one time.3.1.5 weld fittingsdefinitions is to be mutually agreedupon b
7、etween manufacturer and the purchaser.4. Materials and Manufacture4.1 Sponge titanium is usually prepared by reduction oftitanium tetrachloride and gets its spongelike character fromthe processes involved in production. This spongy character-istic, however, is not considered essential and may be exp
8、ectedto vary greatly with manufacturing methods. For example,virgin titanium produced electrolytically is crystalline orgranular in character and is essentially nonporous. The metal isusually supplied in lump or granular form. This specification,however, is not limited to metal prepared by reduction
9、 of thetetrachloride.4.2 Only virgin titanium, free of scrap and intentionallyadded contaminants, shall be supplied under this specification.It shall be supplied in uniform, well-mixed blends, each ofwhich shall be clearly designated.5. Chemical Composition5.1 The titanium metal supplied under this
10、specificationshall conform to the chemical composition requirements pre-scribed in Table 1.6. Hardness6.1 The Brinell Hardness of a lot shall be the average of thehardness determinations on each button prepared as describedin Section 5. The average hardness of each button for the lotshall not exceed
11、 the values specified in Table 1. Measurementshall be in accordance with Test Method E 10, using a 0.394 in.(10-mm) ball, 3307-lbf (1500-kgf) load, and 30-s dwell.7. Sampling7.1 The sampling method used shall be a matter of agree-ment between the manufacturer and the purchaser. The follow-ing are ac
12、ceptable industrial practices:7.1.1 The blend shall be sampled as required in 7.1.2 and7.1.3 unless otherwise agreed upon between the manufacturerand the purchaser.7.1.2 The sample for determining the conformance of the lotto the chemical and physical requirements shall be obtained bysampling the lo
13、t to produce a 0.25 % sample but not less than30 lb (14 kg) providing the lot is crushed to a particle size of1 in. (25.4 mm) or less in size. The blended evaluation sample1This specification is under the jurisdiction of ASTM Committee B10 onReactive and Refractory Metals and Alloysand is the direct
14、 responsibility ofSubcommittee B10.01on Titanium.Current edition approved Nov. 10, 2001. Published January 2002. Originallypublished as B 299 - 55 T. Last previous edition B 299 - 99.2Annual Book of ASTM Standards, Vol 03.01.3Annual Book of ASTM Standards, Vol 03.05.1Copyright ASTM International, 10
15、0 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.shall be split to produce two or more samples 0.1 lb (45 g) ormore each, to be melted into buttons, and one sample of at least0.5 lb (227 g).7.1.3 The buttons shall be melted in a furnace under aninert-gas atmosphere.
16、The resulting 0.1-lb (45-g) buttons shallbe checked for Brinell hardness and samples shall be takenfrom each button for the required chemical analysis. The 0.5-lb(227-g) sample shall be used for the metal, chlorine, hydrogen,and moisture analysis.8. Retests8.1 If the results of any test lot are not
17、in conformance withthe requirements of this specification, the lot may be retested atthe option of the manufacturer. The frequency of the retest willdouble the initial number of tests. If the results of the retestconform to this specification, then the retest values willbecome the test values for ce
18、rtification. If the results of theretest fail to conform to this specification, the material will berejected in accordance with Section 9. All test values, originaland retest, shall be reported to the purchaser.9. Report of Analysis9.1 The manufacturer shall supply at least one copy of thereport sho
19、wing the results of chemical analysis and hardnesstests on the material supplied.10. Methods of Chemical Analysis10.1 The methods of analysis shall be in accordance withTest Methods E 120 or as agreed upon between the manufac-turer and the purchaser. Moisture content shall be determinedby any curren
20、t acceptable industrial practice.11. Rejection11.1 Material not conforming to this specification or toauthorized modifications shall be subject to rejection. Unlessotherwise specified, rejected material may be returned to themanufacturer at the manufacturers expense, unless the pur-chaser receives,
21、within 3 weeks of the notice of rejection, otherinstructions for disposition.12. Referee Test and Analysis12.1 In the event of disagreement between the manufacturerand the purchaser on the conformance of the material to therequirements of this specification, a mutually acceptable ref-eree shall perf
22、orm the tests in question. The referees testingshall be used in determining conformance of the material tothis specification.13. Packaging and Package Marking13.1 The method of packaging shall be agreed upon be-tween the manufacturer and the purchaser. The size and natureof the containers used are g
23、enerally determined by the time andlength of storage and the amount of handling involved. Wherea fire hazard or sponge deterioration during prolonged storageare primary considerations, titanium sponge should be packedin air-tight, moisture-proof, sealed metal cans or drums of atype suitable for ship
24、ment at the lowest rate by commoncarrier. Tightly sealed fiber drums are considered adequatewhere handling is at a minimum and usage is rather prompt.14. Keywords14.1 titanium; titanium spongeTABLE 1 Chemical RequirementsElementWeight by % (Dry Basis)GPAELBSLCMLDMDENitrogen, max 0.02 0.008 0.015 0.0
25、15 0.015Carbon, max 0.03 0.02 0.02 0.02 0.02Sodium, maxF0.10 0.19 . .Magnesium, maxF0.08 . 0.50 0.08Aluminum, max 0.05 0.03 0.05 0.05 .Chloride, max 0.20 0.10 0.20 0.20 0.12Iron, max 0.15 0.05 0.05 0.15 0.12Silicon, max 0.04 0.04 0.04 0.04 0.04Hydrogen, max 0.03 0.02 0.05 0.03 0.010Water, max 0.02 0
26、.02 0.02 0.02 0.02Oxygen, max 0.15 0.08 0.10 0.10 0.10Chromium, max . . . . 0.06GNickel, max . . . . 0.05GAll other impurities (total), maxTitanium, balance (nominal)0.05remainder0.05remainder0.05remainder0.05remainder0.05remainderBrinell hardness, max 140 110 120 140 140AGPA general purpose grade,
27、either magnesium or sodium reduced and finished by leaching or inert gas sweep, or both.BELElectrolytic produced.CSLSodium reduced and finished by leaching.DMLMagnesium reduced and finished by leaching or inert gas sweep.EMDMagnesium reduced and finished by distillation.FSodium or magnesium, max 0.5
28、0 %.GThe chemical requirements for grade MD sponge have been modified to reflect the use of stainless steel production vessels, which are the norm for this grade ofsponge. The use of stainless steel necessarily now incorporates unavoidable chromium and nickel contaminants. These contaminants do not
29、alter the basic propertyrequirements of the sponge. However, it is necessary to incorporate these two unavoidable contaminants into the chemical requirements for this grade, just as the otherunavoidable contaminants have been assigned maximum permissible levels.B299012ASTM International takes no pos
30、ition respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibil
31、ity.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to AS
32、TM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address
33、 shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).B299013
