1、Designation: A836/A836M 14Standard 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 the yearof original adoption or,
2、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*1.1 This specification covers nonstandard as-forged fittings,valve components, and p
3、arts for glass-lined piping and pres-sure vessel service. Mechanical properties are certified on thebasis of test material subjected to heat treatments to simulateglass-coating operations.1.2 The values stated in either inch-pound units or SI unitsare to be regarded separately as standard. Within th
4、e text, theSI units are shown in brackets. The values stated in eachsystem are not exact equivalents; therefore, each system mustbe used independently of the other. Combining values from thetwo systems may result in nonconformance with the specifi-cation. The inch-pound units shall apply unless the
5、“M”designation of this specification is specified in the order.2. Referenced Documents2.1 ASTM Standards:2A788/A788M Specification for Steel Forgings, General Re-quirementsA961/A961M Specification for Common Requirements forSteel Flanges, Forged Fittings, Valves, and Parts forPiping Applications3. O
6、rdering Information3.1 Product furnished to this specification shall conform tothe requirements of Specification A961/A961M, including anysupplementary requirements that are indicated in the purchaseorder. Failure to comply with the requirements of SpecificationA961/A961M constitutes non-conformance
7、 with this specifi-cation.3.2 It is the purchasers responsibility to specify in thepurchase order all ordering information necessary to purchasethe needed material. Examples of such information include butare not limited to the ordering information in SpecificationA961/A961M and the following:3.2.1
8、Supplementary requirements, and3.2.2 Additional requirements (see 11.1, 13.1, and 13.2).3.3 If the requirements of this specification are in conflictwith the requirements of Specification A961/A961M, therequirements of this specification shall prevail.4. Materials and Manufacture4.1 The material sha
9、ll be forged by hammering, pressing,rolling, extruding, or upsetting, such that the finished productwill be a forging as defined in the Terminology Section ofSpecification A788/A788M.4.2 When specified in the order, the manufacturer shallsubmit for approval by the purchaser a sketch showing theshape
10、 of the rough forging before machining.4.3 Forgings shall be protected against sudden or too rapidcooling from the rolling or forging while passing through thecritical range.4.4 Heat treatment of forgings is neither required norprohibited. However, the test material for qualifying theforging or the
11、welding procedure shall be heat treated tosimulate glass-coating operations.5. Chemical Composition5.1 An analysis of each heat shall be made by the manufac-turer to determine the percentages of the elements specified inTable 1. The chemical composition thus determined shallconform to the requiremen
12、ts in Table 1.6. Mechanical Properties6.1 The test material shall conform to the requirements as totensile 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 bediscarded and another
13、 specimen substituted.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.22 on Steel Forgings and Wrought Fittings for Piping Applications and BoltingMaterials for Piping and Special Purp
14、ose Applications.Current edition approved Oct. 1, 2014. Published October 2014. Originallyapproved in 1984. Last previous edition approved in 2013 as A836/A836M 13.DOI: 10.1520/A0836_A0836M-14.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at se
15、rviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. Uni
16、ted States18. Retests8.1 When one or more representative test specimens do notconform to specification requirements for the testedcharacteristic, only a single retest for each nonconformingcharacteristic may be performed to establish product accept-ability. Retests shall be performed on twice the nu
17、mber ofrepresentative specimens that were originally nonconforming.When any retest specimen does not conform to specificationrequirements for the characteristic in question, the lot repre-sented by that specimen shall be rejected, or the test materialshall be heat treated or reheat-treated in accord
18、ance with 4.4,and tested in accordance with Sections 6 and 7.9. Test Specimens9.1 The test material to be used for qualifying the forgingsshall be heat treated with the forgings represented by the testmaterial, if the forgings are heat treated, then, the test materialshall be normalized three times
19、from a minimum temperatureof 1550 F 845 C prior to testing. This heat treatmentsimulates glass-coating operations.10. Surface Finish, Appearance, and CorrosionProtection10.1 The requirements of Specification A961/A961M applyto forgings and finished parts.11. Repair by Welding11.1 Approval by the pur
20、chaser shall be required prior toweld repair.11.2 The welded test plate used to qualify the procedureshall be normalized three times at 1550 F 845 C prior totesting to simulate glass-coating operations.11.3 The composition of the weld deposits shall be similarto the base metal and in accordance with
21、 the procedurequalification for the applicable material. Welding shall beaccomplished with a weld procedure designed to produce lowhydrogen in the weldment. Short-circuit gas metal arc weldingis permissible only with the approval of the purchaser.12. Rejection and Rehearing12.1 Samples representing
22、material rejected by the pur-chaser shall be preserved until disposition of the claim has beenagreed upon by the manufacturer and the purchaser.13. Certification13.1 See Specification A961/A961M.13.2 A test report of the test results for chemistry (Section 5and Table 1) and tensile properties (Secti
23、on 6 and Table 2) shallbe furnished.14. Product Marking14.1 In addition to marking requirements of SpecificationA961/A961M, the following additional marking requirementsshall apply:14.1.1 Forgings repaired by welding shall be marked withthe letter “W” following this specification number.14.2 Bar Cod
24、ingIn addition to the requirements in 14.1,bar coding is acceptable as a supplemental identificationmethod. The purchaser may specify in the order a specific barcoding system to be used. The bar coding system, if applied atthe discretion of the supplier, should be consistent with one ofthe published
25、 industry standards for bar coding. If used onsmall parts, the bar code may be applied to the box or asubstantially applied tag.15. Keywords15.1 carbon; pipe fittings; piping applications; pressurecontaining parts; pressure vessel service; steel; steel flanges;steel forgings; steel valvesTABLE 1 Che
26、mical RequirementsElementComposition, %Carbon, max 0.20Manganese, max 0.90Phosphorus, max 0.05Silicon, max 0.35Sulfur, max 0.05Titanium, min 4 carbon contentTitanium, max. 1.00TABLE 2 Tensile RequirementsClass ITensile strength, min, ksi MPa 55 380Yield strength,Amin, ksi MPa 25 175Elongation in 2 i
27、n. or 50 mm, min, % 22Reduction of area, min, % 35ADetermined by either the 0.2 % offset method or the 0.5 % extension-under-loadmethod.A836/A836M 142SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue,A836/A836M13, that may impact th
28、e use of this standard. (Approved October 1, 2014)(1) Added Section 10 on surface finish, appearance, andcorrosion protection.Committee 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 O
29、ctober 1, 2013)(1) Revised Sections 13 and 14 on certification and marking.ASTM International 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
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