1、PART B-NONFERROUS MATERIAL SPECIFICATIONSSB-210inspections and tests set forth in this specification where7.3.2 Sampling for spectrochemical analysis shallsuch inspections are deemed necessary to ensure thatbe in accordance with Practices E 716.Samples for othermaterial conforms to prescribed requir
2、ementsmethods of analysis shall be suitable for the form of6.2 Lot Definition-An inspection lot shall be definedmaterial being analyzed and the type of analyticalmethod used.as follows.6.2.1 For heat-treated tempers an inspection lotNOTE 4-It is difficult to obtain a reliable analysis of each of the
3、shall consist of an identifiable quantity of material of thecomponents of clad materials using material in its finished state.Areasonably accurate determination of the core composition can be madesame mill form,alloy,temper,and nominal dimensionsif the cladding is substantially removed prior to anal
4、ysis.The claddingtraceable to a heat-treat lot or lots,and subjected to inspec-composition is more difficult to determine because of the relativelytion at one time.thin layer and because of diffusion of core elements to the cladding.The correctness of cladding alloy used can usually be verified by a
5、6.2.2 For nonheat-treated tempers,an inspectioncombination of metallographic examination and spectrochemical analy-lot shall consist of an identifiable quantity of material ofsis of the surface at several widely separated points.the same mill form,alloy,temper,and nominal dimen-sions subjected to in
6、spection at one time.7.4 Methods of Analysis-The determination ofchemical composition shall be made in accordance withsuitable chemical(Test Methods E34)or spectrochemical7.Chemical Composition(Test Methods E 101,E227,E 607,and E 1251)methods.7.1 Limits-The tubes shall conform to the chemicalOther m
7、ethods may be used only when no publishedcomposition limits prescribed in Table 1.ConformanceASTM method is available.In case of dispute,the meth-shall be determined by the producer by analyzing samplesods of analysis shall be agreed upon between the producertaken at the time the ingots are poured,o
8、r samples takenand the purchaser.from the finished or semi-finished product.If the producerhas determined the chemical composition of the materialduring the course of manufacture,he shall not be required8Tensile Properties of Material as Suppliedto sample and analyze the finished product.8.1 Limits-
9、Tube shall conform to the tensile prop-erty requirements specified in Table 2.NOTE 3-It is standard practice in the United States aluminumindustry to determine conformance to the chemical composition limits8.2 Number of Specimensprior to further processing of ingots into wrought products.Due to the8
10、.2.1 For tubes having a nominal weight of lesscontinuous nature of the process,it is not practical to keep a specificingot analysis identified with a specific quantity of finished material.than 1 Ib/linear ft,one tension test specimen shall betaken for each 1,000 lb or fraction thereof in a lot.7.2
11、Number of Samples-The number of samplestaken for determination of chemical composition shall be8.2.2 For tubes having a nominal weight of 1 lbas follows.or more/linear ft,one tension test specimen shall be takenfor each 1,000 ft or fraction thereof in a lot.7.2.1 When samples are taken at the time t
12、he ingotsare poured,at least one sample shall be taken for each8.2.3 If the shipment contains tubes of more thangroup of ingots poured simultaneously from the sameone alloy,temper,or size,only those tubes of the samesource of molten metal.alloy,temper,and size shall be grouped for the purposeof sele
13、cting tension test specimens.Other procedures for7.2.2 When samples are taken from the finished orselecting samples may be employed if agreed upon bysemi-finished product,a sample shall be taken to representthe producer and the purchaser.each 4,000 lb or fraction thereof of material in the ship-ment
14、,except that no more than one sample shall be8.3 Test Specimens-Geometry of test specimens andrequired per piece.the location in the product from which they are takenshall be as specified in Test Methods B 557.7.3 Methods ofSampling-Samples for determinationof chemical composition shall be taken in
15、accordance8.4 Test Methods-The tension tests shall be madewith one of the following methods.in accordance with Test Methods B 557.7.3.1 Samples for chemical analysis shall be takenfrom the material by drilling,sawing,milling,turning,or clipping a representative piece or pieces to obtain a9.Flattenin
16、g Propertiesprepared sample not less than 75 g.Sampling shall be in9.1 Limits-When specified by the purchaser at theaccordance with Practice E 55.time of placing the order,round tube in alloys and tempers249SB-2102004 SECTION(.:4245含昌20.0005昌总8(20.08月2108厨81-0.09:0-01-0100.1100.02-0(2000.1-8.05:01550120.0SI-0L吕是21莒27.:1140.8820-.0-01.0层居(豆三得g曾P:+150uollS器2202528.:0-00.0KollV昌2000EOOE PEIIV(6)aoN:S3LON(250
