ASTM B834-2015 Standard Specification for Pressure Consolidated Powder Metallurgy Iron-Nickel-Chromium-Molybdenum (UNS N08367) Nickel-Chromium-Molybdenum-Columbium (Nb) (UNS N06625.pdf
《ASTM B834-2015 Standard Specification for Pressure Consolidated Powder Metallurgy Iron-Nickel-Chromium-Molybdenum (UNS N08367) Nickel-Chromium-Molybdenum-Columbium (Nb) (UNS N06625.pdf》由会员分享,可在线阅读,更多相关《ASTM B834-2015 Standard Specification for Pressure Consolidated Powder Metallurgy Iron-Nickel-Chromium-Molybdenum (UNS N08367) Nickel-Chromium-Molybdenum-Columbium (Nb) (UNS N06625.pdf(6页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B834 13B834 15Standard Specification forPressure Consolidated Powder Metallurgy Iron-Nickel-Chromium-Molybdenum (UNS N08367) and N08367), Nickel-Chromium-Molybdenum-Columbium (Nb) (UNS N06625)N06625), Nickel-Chromium-Iron Alloys (UNS N06600 andN06690), and Nickel-Chromium-Iron-Columbium
2、-Molybdenum (UNS N07718) Alloy Pipe Flanges, Fittings,Valves, and Parts1This standard is issued under the fixed designation B834; 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 in
3、dicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers pressure consolidated powder metallurgy iron-nickel-chromium-molybdenum (UNS N08367) andnickel-chromium-molybdenumcolumbium (Nb) (UN
4、S N06625) N06625), nickel-chromium-iron alloys (UNS N06600 andN06690), and nickel-chromium-iron-columbium (Nb)-molybdenum (UNS N07718) alloy pipe flanges, fittings, valves, and partsintended for general corrosion or heat-resisting service.1.1.1 UNS N06625 products are furnished in two grades of diff
5、erent heat-treated conditions:1.1.1.1 Grade 1 (annealed)Material is normally employed in service temperatures up to 1100F (593C).1.1.1.2 Grade 2 (solution annealed)Material is normally employed in service temperatures above 1100F (593C) whenresistance to creep and rupture is required.1.2 UNS N08367
6、products are furnished in the solution annealed condition.1.3 UNS N06600 products are furnished in the annealed condition.1.4 UNS N06690 products are furnished in the annealed condition.1.5 UNS N07718 products are furnished in the solution annealed + precipitation hardened condition.1.6 The values s
7、tated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information only and are not considered standard.1.7 The following safety hazards caveat pertains only to test methods portions, Sections 7.3 and 13
8、, of this specification:Thisstandard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the userof this standard to become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet(MSDS)(SDS) f
9、or this product/material as provided by the manufacturer, to establish appropriate safety and health practices, andto determine the applicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2E8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice fo
10、r Using Significant Digits in Test Data to Determine Conformance with SpecificationsE1473 Test Methods for Chemical Analysis of Nickel, Cobalt, and High-Temperature AlloysG28 Test Methods for Detecting Susceptibility to Intergranular Corrosion in Wrought, Nickel-Rich, Chromium-Bearing Alloys1 This s
11、pecification is under the jurisdiction ofASTM Committee B02 on Nonferrous Metals andAlloys and is the direct responsibility of Subcommittee B02.07 on RefinedNickel and Cobalt and Their Alloys.Current edition approved Oct. 1, 2013Oct. 1, 2015. Published October 2013October 2015. Originally approved i
12、n 1993. Last previous edition approved in 20092013 asB834 95 (2009).B834 13. DOI: 10.1520/B0834-13.10.1520/B0834-15.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to t
13、he standardsstandards 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 may not be technically possible to adequately depict all
14、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 the end of this standardCopyright ASTM International, 100
15、 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1G48 Test Methods for Pitting and Crevice Corrosion Resistance of Stainless Steels and RelatedAlloys by Use of Ferric ChlorideSolution2.2 ManufacturersManufacturers Standardization Society of the Valve and Fittings Indus
16、try Standard:3SP-25 Standard Marking System for Valves, Fittings, Flanges, and Unions2.3 ASME/ANSI Standard:4ASME/ANSI B16.5 Pipe Flanges and Flanged Fittings3. Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 can, nthe container used to encapsulate the powder during the pressure
17、consolidation process; it is removed from thefinal part.3.1.2 compact, nthe consolidated powder from one can; it may be used to make one or more parts.3.1.3 fill pin, nthe part of the compact in the spout used to fill the can; it is not usually integral to the part produced.3.1.4 part, na single ite
18、m coming from a compact, either prior to or after machining.3.1.5 powder blend, na homogeneous mixture of powder from one or more heats; it is limited to the amount that can be mixedin the same blender at one time.3.1.6 rough part, nthe part prior to final machining.4. Ordering Information4.1 Orders
19、 for material under this specification should include the following information:4.1.1 Quantity (weight or number of pieces),4.1.2 Name of material or UNS number,4.1.3 Condition (UNS N06625),4.1.4 Microstructure examination, if required (5.1.4),4.1.5 ASTM designation and year of issue,4.1.6 Inspectio
20、n (14.1),4.1.7 Whether rough part or finish machined (7.2.2),4.1.8 Supplementary requirements, when applicable, and4.1.9 If possible, the intended end use.5. Materials and Manufacture5.1 Manufacturing Practice:5.1.1 Compacts shall be manufactured by placing a single powder blend into a can, evacuati
21、ng the can, and sealing it. The canmaterial shall be selected to ensure that it has no deleterious effect on the final product. The entire assembly shall be heated andplaced under sufficient pressure for a sufficient period of time to ensure that the final consolidated part is fully dense. The compa
22、ctmay represent one part or a number of parts may be machined from it.5.1.2 The powder shall be produced by vacuum melting followed by gas atomization.5.1.3 When powder from more than one heat is used to make a blend, the heats shall be thoroughly mixed to ensurehomogeneity.5.1.4 When specified on t
23、he order, a section of the compact may be sectioned and the microstructure examined to show porosityand other internal imperfections. This is usually performed on the fill pin. In such cases, the section location and the question ofacceptable and unacceptable microstructure shall be agreed upon by t
24、he manufacturer and the purchaser.5.2 Heat Treatment:5.2.1 Alloy N06625 shall be supplied in either:5.2.1.1 Grade 1: The annealed condition. At the option of the producer, the anneal may be a separate operation followingconsolidation or may be part of the consolidation process. In either case, the t
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