Ni-span Alloy

Ni-span AlloyPrecision Alloy 3J1/3J53Elastic Component Alloys (3J1 and 3J53) (YB/T5256-1993)*Ni-span alloy c-902, AMS 5225, UNS N09902, (Ni42CrTiAl),Chinese 3J53Note: A precipitation hardenable Nickel-Iron-Chromium alloy having an outstanding controllable thermoelastic coefficient characteristics and excellent strength and oxidation resistance in high temperature atmospheres. The alloy can be processed to have a constant modulus of elasticity at temperatures -45 C to +65 C. Applications include springs in precise applications, such as watches and weighing machines.GradeRelative GradeRussiaU.S.A.JapanGermanyU.K.3J136HXTO 7023J5342HXTO H41XTNi-Span C902 Elinvar ExtraSumispan-3 EL-3Ni-Span CNi-Span CGrade and Chemical Composition (see Table 1) Table 1 Grade and Chemical CompositionGradeChemical Composition (%)CMnsiPsNiCrTiA1Fe3J10.051.000.800.0200.02034.5~36.511.5~13.02.70~3.201.00~1.80Balance3J530.050.800.800.0200.02041.5~43.05.20~5.802.30~2.700.50~0.80BalanceNote: The size and shape must comply with the standard of GB/T15001for  elastic alloys .Mechanical Property (see Table 2 Table4) Table 2 Mechanical Property (for the delivery statue)GradeShapeDelivery StateThickness&Diameter/mmTensile Strength  b/MpaElongation (%)3J1stripannealed0.20~0.5098020wirecold drawn0.20~3.009803J53stripannealed0.20~0.5088520wirecold drawn0.20~3.00930Table 3 Mechanical Property(after the heat treament)GradeShapeDelivery StateThickness&Diameter/mmTensile Strength  b/MpaElongation  (%)3J1stripcold rolled0.20~2.5013755Annealed0.20~1.0011758wirecold drawn0.50~5.0014705barcold drawn3.0~18.013755Pipe& flatspringhot rolled & hot forged6.0~25.01175103J53stripcold rolled0.20~2.5012255Annealed0.20~1.0010808wirecold drawn0.50,5.0013755barcold drawn3.0~18.013255Pipe& flatspringhot rolled & hot forged6.0~25.0108010Table 4 Yield Strength (after the heat treament)GradeDelivery StateThickness/mmYield Strength/Mpa3J1cold rolled0.50~2.50980Annealed0.50~1.007353J53cold rolled0.50~2.50885Annealed0.50~1.00685Physical Property (see Table5&Table6) Table 5 physical propertymechanical property (after aging)Item3J13J53Modulus of elasticity (E/MPa)186500~206000176500~191000Shear elasticity (G/MPa)68500~7850063500~73500Desinty (g/cm3)8.08.0Mean coefficient of linear expansion20-100 C/(10-6/K)8.5Saturation induction density (B600/T)0.7Resistivity   /(   m)1.021.1Magnetic Rate k/106150~250Vickers hardness (HV)400~480350-450Note: The K value is the value of the centimeter gram second system.Table 6 The temperature coefficient of the Modulus of elasticity for 3J53 alloyAging Temperature/ CThe temperature coefficient of the Modulus of elasticity for 3J53 alloy       E/(10-6/ C)(-60~+80 C)Cold RollingAnnealed500-38~-15+18~+12550-22~0+10~+35600-10~+10+35~+556500~+20+42~+647000~+20+40~+60750-4~+16+28~+50