ASTM A636-2008(2018) Standard Specification for Nickel Oxide Sinter.pdf

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1、Designation: A636 08 (Reapproved 2018)Standard Specification forNickel Oxide Sinter1This standard is issued under the fixed designation A636; 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 pa

2、rentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This specification covers one grade of nickel oxidesinter, designated as 75, used for alloying in iron and steelmelting.1.2 This international stan

3、dard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade (TBT) Committee.2. R

4、eferenced Documents2.1 ASTM Standards:2A1025/A1025M Specification for Ferroalloys and Other Al-loying Materials, General Requirements3. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of Specification A1025/A1025M, includingany supplement

5、ary requirements that are indicated in thepurchase order. Failure to comply with the general require-ments of Specification A1025/A1025M constitutes nonconfor-mance with this specification. In case of conflict between therequirements of this specification and Specification A1025/A1025M, this specifi

6、cation shall prevail.4. Chemical Requirements4.1 The chemical requirements are shown in Table 1.5. Sampling for Chemical Analysis5.1 The material shall be sampled in accordance withprocedures outlined below:5.1.1 The sample shall be taken by cutting across the entirestream at regular intervals durin

7、g the time of movement of themass being sampled. The quantity to be taken at each intervaland the number of such intervals shall be so proportioned thatthe total quantity taken shall amount to not less than 0.40 % ofthe total material being sampled.5.2 Treatment of Sample:5.2.1 In the case of nickel

8、 oxide sinter 75, the samplerepresenting each shipment or lot shall be reduced in amountusing a riffle splitter or other suitable mechanical splitter to1000 g. This 1000-g sample shall be placed in an oven at250 F 121 C for12 h to remove any traces of moisture, andthen pulverized to pass an 80-mesh

9、screen, using appropriateequipment to avoid sample contamination. Approximately250 g of this pulverized material shall be split out for copperand sulfur assays, using a riffle splitter or other suitablemechanical splitter. The unused portion of individual shipment(or lot) samples whose copper and su

10、lphur assays are withinspecification shall be combined by weight into two, three, orfour lot composites. Approximately 250 g of the compositedmaterial shall be split out, using a riffle splitter or other suitablemechanical splitter and analyzed for nickel. This nickel analy-sis shall apply to each s

11、hipment (or lot) comprising thecomposite.6. Keywords6.1 nickel; nickel oxide; sinter1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel and Related Alloys and is the direct responsibility of SubcommitteeA01.18 on Castings.Current edition approved Sept. 1, 201

12、8. Published September 2018. Originallyapproved in 1970. Last previous edition approved in 2013 as A636 08 (2013).DOI: 10.1520/A0636-08R18.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume

13、 information, refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United StatesThis international standard was developed in accordance with internationally recognized principles on standar

14、dization established in the Decision on Principles for theDevelopment of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.1ASTM International takes no position respecting the validity of any patent rights asserted

15、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 responsibility.This standard is subject to revision at any time by the

16、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 ASTM International Headquarters. Your comments will receive ca

17、reful 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 shown below.This standard is copyrighted by ASTM Internatio

18、nal, 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

19、 ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 1 Chemical RequirementsElementComposition, %Grade 75Nickel, min 75.00Cobalt, max 1.30Copper, max 0.90Iron, max 0.50Sulfur, max 0.02A636 08 (2018)2