ASTM A636-2008 Standard Specification for Nickel Oxide Sinter《氧化镍烧结块的标准规范》.pdf

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1、Designation: A 636 08Standard Specification forNickel Oxide Sinter1This standard is issued under the fixed designation A 636; 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 indica

2、tes the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers one grade of nickel oxidesinter, designated as 75 used for alloying in iron and steelmelting.2. Referenced Documents2.1 ASTM Standards:

3、2A 1025 Specification for Ferroalloys and Other AlloyingMaterials, General Requirements3. General Conditions for Delivery3.1 Materials furnished to this specification shall conform tothe requirements of Specification A 1025, including anysupplementary requirements that are indicated in the purchaseo

4、rder. Failure to comply with the general requirements ofSpecification A 1025 constitutes nonconformance with thisspecification. In case of conflict between the requirements ofthis specification and Specification A 1025, this specificationshall prevail.4. Chemical Requirements4.1 The chemical require

5、ments 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 during the time of movement of themass being sampled. The quantity to be t

6、aken 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 oxide sinter 75, the samplerepresenting each shipment or lot shall b

7、e reduced in amountusing a riffle splitter or other suitable mechanical splitter to1000 g. This 1000-g sample shall be placed in an oven at 250F(121C) for12 h to remove any traces of moisture, and thenpulverized to pass an 80-mesh screen using appropriate equip-ment to avoid sample contamination. Ap

8、proximately 250 g ofthis pulverized material shall be split out for copper and sulfurassays, using a riffle splitter or other suitable mechanicalsplitter. The unused portion of individual shipment (or lot)samples whose copper and sulphur assays are within specifi-cation shall be combined by weight i

9、nto two, three, or four lotcomposites. Approximately 250 g of the composited materialshall be split out, using a riffle splitter or other suitablemechanical splitter and analyzed for nickel. This nickel analy-sis shall apply to each shipment (or lot) comprising thecomposite.6. Keywords6.1 nickel; ni

10、ckel 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 March 1, 2008. Published March 2008. Originallyapproved in 1970. Last previous

11、 edition approved in 2004 as A 636 - 76 (2004).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.TABLE 1 Chemic

12、al RequirementsElementComposition, %Grade 75Nickel, min 75.00Cobalt, max 1.30Copper, max 0.90Iron, max 0.50Sulfur, max 0.021*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United Sta

13、tes.SUMMARY OF CHANGESCommittee A01 has identified the location of selected changes to this standard since the last issue (A 636-76(2004) that may impact the use of this standard. (Approved March 1, 2008.)(1) Section 1, Content edited.(2) Section 2, General requirements standard included. Otherstand

14、ards deleted.(3) Section 3, New title and new content.(4) Section 4, Title changed and content edited.(5) Section 5 deleted.(6) Section 6 renumbered as Section 5.(7) Sections 7, 8, 9 deleted.(8) Section 10 Renumbered as Section 6.ASTM International takes no position respecting the validity of any pa

15、tent 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 responsibility.This standard is subject to revisio

16、n 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 ASTM International Headquarters. Your com

17、ments 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 shown below.This standard is copyright

18、ed 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).A636082