ASTM_F_290_-_94_2015.pdf

Designation:F29094(Reapproved 2015)Standard Specification forRound Wire for Winding Electron Tube Grid Laterals1This standard is issued under the fixed designation F290;the number immediately following the designation indicates the year of originaladoption or,in the case of revision,the year of last revision.Anumber in parentheses indicates the year of last reapproval.Asuperscriptepsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers round wire up to 0.006 in.(0.15 mm)in diameter for use as electron tube grid lateralwinding wire.1.2 Five classes of wire are covered based on their tensileproperties(see 5.2 and 5.3).1.3 The values stated in inch-pound units are to be regardedas standard.The values given in parentheses are mathematicalconversions to SI units that are provided for information onlyand are not considered standard.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2E39 Methods for Chemical Analysis of Nickel(Withdrawn1995)3E107 Test Methods for Chemical Analysis of ElectronicNickel(Withdrawn 2003)3E129 Test Method for Spectrographic Analysis of Thermi-onic NickelAlloys by the Powder Techniques(Withdrawn1999)3F16 Test Methods for Measuring Diameter or Thickness ofWire and Ribbon for Electronic Devices and LampsF205 Test Method for Measuring Diameter of Fine Wire byWeighingF288 Specification for Tungsten Wire for Electron Devicesand LampsF289 Specification for Molybdenum Wire and Rod forElectronic Applications3.Terminology3.1 Description of Terms:3.1.1 The following description of terms shall apply to therequirements specified in Table 1:3.1.1.1 breaking strengthThe stress at which the specimenbreaks.3.1.1.2 elongationThe maximum percent of stretch in aspecimen of 10-in.(250-mm)gage length.3.1.1.3 tensile strengthThe ultimate strength of the mate-rial expressed either as grams per milligram per 200 mm lengthof wire or pounds per square inch.3.1.1.4 ultimate strengthThe maximum stress developedin a specimen.3.1.1.5 work loadThe difference between the yield loadand the ultimate load.3.1.1.6 yield strengthThe stress developed at 1 percentelongation when testing a specimen of 10-in.(250-mm)gagelength.4.Chemical Composition4.1 The wire shall conform to the requirements as tochemical composition as prescribed in Table 2.5.Tensile Properties5.1 The wire shall conform to the requirements as to tensilestrength,yield strength,working range,and elongation prop-erties as prescribed in Table 1 for the class of wire designated.5.2 The class designations for the nickel-titanium-magnesium alloy UNS N03300;the nickel-manganese alloyUNS N02211;molybdenum wire,and the nickel-molybdenum-iron alloy UNS N10001;are based on their tensile properties asfollows:5.2.1 Class IThe wire shall conform to elongation prop-erties as specified in ranges in Table 1.5.2.2 Class IIThe wire shall conform to the followingtensile properties:5.2.2.1 Yield strength with a spread of approximately615%,as shown in grams-force,minimum and maximum,inTable 2,5.2.2.2 Working range,as specified in Table 1,and1This specification is under the jurisdiction of ASTM Committee F01 onElectronicsand is the direct responsibility of Subcommittee F01.03 on MetallicMaterials,Wire Bonding,and Flip Chip.Current edition approved July 1,2015.Published October 2015.Originallyapproved in 1954 as B290 54 T;redesignated F290 in 1955.Last previous editionapproved in 2010 as F290 94(2010).DOI:10.1520/F0290-94R15.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 TABLE 1 Tensile Properties for Nickel-Titanium-Magnesium Alloy(UNS N03300),Nickel-Manganese Alloy(UNS N02211),Molybdenum Wire,and Nickel-Molybdenum-Iron Alloy(UNS N10001)WireCLASS INOTE1Wire supplied as Class I shall conform to the following elongation values as specified by range:MaterialRangeWire Diameter,in.(mm)Elongation,%Nickel-titanium-magnesium alloy(UNS N03300)and nickel-manganese alloy(UNS N02211)1All8 to 162All14 to 2230.003(0.08)and under20 and over4Above 0.003(0.08)22 and overMolybdenum1All8 to 162All14 to 22Nickel-molybdenum-iron alloy(UNS N10001)10.001(0.025)8 to 1820.0015(0.038)18 to 3230.002(0.050)and above25 and overCLASS IINOTE1Wire supplied as Class II shall conform to the following requirements as to yield strength(15 percent),working range,and elongation:MaterialWire DiameterYield StrengthWorkingLo