1、Designation: A 636 76 (Reapproved 2004)Standard 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
2、parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 The values stated in
3、inch-pound units are to be regardedas the standard. The SI equivalents of inch-pound units may beapproximate.2. Referenced Documents2.1 ASTM Standards:2E 29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE 39 Methods for Chemical Analysis of Nickel33. O
4、rdering Information3.1 Orders for materials under this specification shall in-clude the following information:3.1.1 Name of materialnickel oxide sinter,3.1.2 ASTM designation and year of issue, and3.1.3 Grade.3.2 Although nickel oxide sinter may be ordered either bytotal net weight or contained weig
5、ht, the customary basis forpayment is per pound of contained nickel.4. Chemical Composition4.1 Nickel oxide sinter shall conform to the requirements asto chemical composition specified in Table 1.4.2 The manufacturer shall furnish an analysis of eachshipment showing the nickel content.4.3 The values
6、 shown for cobalt, copper, iron and sulfur areexpected maximums. Upon request of purchaser, the manufac-turer shall furnish an analysis for any of these elements over aperiod of production mutually agreed upon by manufacturerand the purchaser.5. Size5.1 Nickel oxide sinter is available in containers
7、 packed toeither 50 lb or 22.5 kg of nickel contained, larger uniformweight containers packed to either pound or kilogram weightsor in bulk shipment using suitable rail, truck, or shipboardmeans of conveyance.6. Sampling for Chemical Analysis6.1 The material shall be sampled in accordance withproced
8、ures outlined below:6.1.1 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 taken at each intervaland the number of such intervals shall be so proportioned thatthe total quantity taken shall amou
9、nt to not less than 0.40 % ofthe total material being sampled.6.2 Treatment of Sample:6.2.1 In the case of nickel 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
10、 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. Approximately 250 g ofthis pulverized material shall be split out for copper and sulfurassays, using a riffle splitter o
11、r 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 into two, three, or four lotcomposites. Approximately 250 g of the composited materialshall be split out, using a riffl
12、e splitter or other suitablemechanical splitter and analyzed for nickel. This nickel analy-sis shall apply to each shipment (or lot) comprising thecomposite.1This specification is under the jurisdiction of ASTM Committee A01 on Steel,Stainless Steel, and Related Alloys and is the direct responsibili
13、ty of SubcommitteeA01.18 on Castings.Current edition approved Oct. 1, 2004. Published October 2004. Originallyapproved in 1970. Last previous edition approved in 2000 as A 636 - 76 (2000).2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at service
14、astm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.3Withdrawn.TABLE 1 Chemical RequirementsElementComposition, %Grade 75Nickel, min 75.00Cobalt, max 1.30Copper, max 0.90Iron, max 0.50Sulfur, max 0.021Copyright ASTM Internati
15、onal, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7. Chemical Analysis7.1 Chemical analysis when required shall be made inaccordance with the procedures for nickel described inMethods E 39, or alternative method agreed upon by themanufacturer and the purchaser
16、.7.1.1 When no method is given in Methods E 39 foranalysis for a particular element or the method given is notadequate, the analysis shall be made in accordance with aprocedure agreed upon between manufacturer and purchaserand such procedure shall apply for referee purposes.7.2 For purposes of compl
17、iance with the specified chemicalcomposition limits, the reported analysis shall be rounded offto the nearest unit in the right-hand place of figures used inexpressing the limiting value, in accordance with rounding-offmethod of Practice E 29.8. Rejection8.1 Any claims or rejections shall be made to
18、 the manufac-turer within 45 days from receipt of material by the purchaser.9. Packaging9.1 The material shall be packaged in sound containers sothat the product is not lost or contaminated in shipment.10. Keywords10.1 nickel; nickel oxide; sinterASTM International takes no position respecting the v
19、alidity 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 their own responsibility.This standard is s
20、ubject 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 be addressed to ASTM International Headq
21、uarters. 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 Standards, at the address shown below.This stan
22、dard 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 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).A 636 76 (2004)2
