1、Designation: A836/A836M 02 (Reapproved 2007)A836/A836M 13Standard Specification forTitanium-Stabilized Carbon Steel Forgings for Glass-LinedPiping and Pressure Vessel Service1This standard is issued under the fixed designation A836/A836M; the number immediately following the designation indicates th
2、e yearof 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 () indicates an editorial change since the last revision or reapproval.1. Scope Scope*1.1 This specification covers nonstandard as-fo
3、rged fittings, valve components, and parts for glass-lined piping and pressurevessel service. Mechanical properties are certified on the basis of test material subjected to heat treatments to simulate glass-coatingoperations.1.2 The values stated in either inch-pound units or SI units are to be rega
4、rded separately as standard. Within the text, the SI unitsare shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be usedindependently of the other. Combining values from the two systems may result in nonconformance with the specification. Thein
5、ch-pound units shall apply unless the “M” designation of this specification is specified in the order.2. Referenced Documents2.1 ASTM Standards:2A788/A788M Specification for Steel Forgings, General RequirementsA961/A961M Specification for Common Requirements for Steel Flanges, Forged Fittings, Valve
6、s, and Parts for PipingApplications3. Ordering Information3.1 Product furnished to this specification shall conform to the requirements of Specification A961/A961M, including anysupplementary requirements that are indicated in the purchase order. Failure to comply with the requirements of Specificat
7、ionA961/A961M constitutes non-conformance with this specification.3.2 It is the purchasers responsibility to specify in the purchase order all ordering information necessary to purchase the neededmaterial. Examples of such information include but are not limited to the ordering information in Specif
8、ication A961/A961M andthe following:3.2.1 Supplementary requirements, and3.2.2 Additional requirements (see 10.1, 12.1, 12.2, and and 12.312.2).3.3 If the requirements of this specification are in conflict with the requirements of Specification A961/A961M, therequirements of this specification shall
9、 prevail.4. Materials and Manufacture4.1 The material shall be forged by hammering, pressing, rolling, extruding, or upsetting, such that the finished product will bea forging as defined in the Terminology Section of Specification A788/A788M.4.2 When specified in the order, the manufacturer shall su
10、bmit for approval by the purchaser a sketch showing the shape of therough forging before machining.4.3 Forgings shall be protected against sudden or too rapid cooling from the rolling or forging while passing through the criticalrange.1 This specification is under the jurisdiction ofASTM Committee A
11、01 on Steel, Stainless Steel and RelatedAlloys and is the direct responsibility of Subcommittee A01.22on Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications.Current edition approved March 1, 2007Oct. 1, 2013. Published April 2
12、007October 2013. Originally approved in 1984. Last previous edition approved in 20022007 asA836/A836M 02.A836/A836M 02 (2007). DOI: 10.1520/A0836_A0836M-02R07.10.1520/A0836_A0836M-13.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.o
13、rg. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit
14、 may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at
15、 the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.4 Heat treatment of forgings is neither required nor prohibited. However, the test material for qualifying the forging or thewelding procedure shall be heat tr
16、eated to simulate glass-coating operations.5. Chemical Composition5.1 An analysis of each heat shall be made by the manufacturer to determine the percentages of the elements specified in Table1. The chemical composition thus determined shall conform to the requirements in Table 1.6. Mechanical Prope
17、rties6.1 The test material shall conform to the requirements as to tensile properties prescribed in Table 2.7. Number of Tests and Retests7.1 One tension test shall be made from each heat.7.2 If any test specimen is defectively machined, it may be discarded and another specimen substituted.8. Retest
18、s8.1 When one or more representative test specimens do not conform to specification requirements for the tested characteristic,only a single retest for each nonconforming characteristic may be performed to establish product acceptability. Retests shall beperformed on twice the number of representati
19、ve specimens that were originally nonconforming. When any retest specimen doesnot conform to specification requirements for the characteristic in question, the lot represented by that specimen shall be rejected,or the test material shall be heat treated or reheat-treated in accordance with 4.4, and
20、tested in accordance with Sections 6 and 7.9. Test Specimens9.1 The test material to be used for qualifying the forgings shall be heat treated with the forgings represented by the test material,if the forgings are heat treated, then, the test material shall be normalized three times from a minimum t
21、emperature of 1550 F 845C prior to testing. This heat treatment simulates glass-coating operations.10. Repair by Welding10.1 Approval by the purchaser shall be required prior to weld repair.10.2 The welded test plate used to qualify the procedure shall be normalized three times at 1550 F 845 C prior
22、 to testingto simulate glass-coating operations.10.3 The composition of the weld deposits shall be similar to the base metal and in accordance with the procedure qualificationfor the applicable material. Welding shall be accomplished with a weld procedure designed to produce low hydrogen in theweldm
23、ent. Short-circuit gas metal arc welding is permissible only with the approval of the purchaser.11. Rejection and Rehearing11.1 Samples representing material rejected by the purchaser shall be preserved until disposition of the claim has been agreedupon by the manufacturer and the purchaser.12. Cert
24、ification12.1 When specifiedSee Specification A961/A961Min the purchase order or contract, a producers or suppliers certificationshall be furnished to the purchaser that the material was manufactured, sampled, tested, and inspected in accordance with thisspecification and has been found to meet the
25、requirements. The specification designation included on test reports shall include yearof issue and revision letter, if any. .12.2 When specified in the purchase order or contract, a report ofAtest report of the test results for chemistry (Section 5 theandTable 1test results ) and tensile properties
26、 (Section 6 and Table 2) shall be furnished.12.3 Upon request of the purchaser in the contract or order, a report of the test results and chemical analyses shall be furnished.TABLE 1 Chemical RequirementsElement Composition, %Carbon, max 0.20Manganese, max 0.90Phosphorus, max 0.05Silicon, max 0.35Su
27、lfur, max 0.05Titanium, min 4 carbon contentTitanium, max. 1.00A836/A836M 13213. Product Marking of Forgings13.1 Identification marks consisting of In addition to marking requirements of Specification A961/A961Mthe manufacturerssymbol or name (Note), designation of service rating, this specification
28、 number, class, and size shall be legibly forged or stampedon each forging, and in such a position as not to injure the usefulness of the forgings., the following additional markingrequirements shall apply:13.1.1 Forgings repaired by welding shall be marked with the letter “W” following this specifi
29、cation number.13.2 Bar CodingIn addition to the requirements in 13.1, bar coding is acceptable as a supplemental identification method. Thepurchaser may specify in the order a specific bar coding system to be used. The bar coding system, if applied at the discretion ofthe supplier, should be consist
30、ent with one of the published industry standards for bar coding. If used on small parts, the bar codemay be applied to the box or a substantially applied tag.14. Keywords14.1 carbon; pipe fittings; piping applications; pressure containing parts; pressure vessel service; steel; steel flanges; steelfo
31、rgings; steel valvesSUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue,A836/A836M02 (2007), that may impact the use of this standard. (Approved October 1, 2013.)(1) Revised Sections 12 and 13 on certification and marking.ASTM Interna
32、tional takes no position 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 th
33、eir own responsibility.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
34、be addressed to ASTM 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 Standar
35、ds, at the address 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
36、-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 2 Tensile RequirementsClass ITensile strength, min, ksi MPa 55 380Yield strength,A min, ksi MPa 25 175Elongation in 2 in. or 50 mm, min, % 22Reduction of area, min, % 35A Determined by either the 0.2 % offset method or the 0.5 % extension-under-loadmethod.A836/A836M 133
