Invar Alloy

Place of Origin	China

Invar AlloyInvar alloy,ASTM F1684,UNS k93600 (FeNi36),Chinese 4J36Usage: Grade 4J32 and 4J36 are suitable for environmental temperature, make dimensional precision parts for instrumentation. 4J38 are used for easy to cut alloys. 4J40 are used for parts that require low expansion at high temperatures.Note: A Nickel-Iron, low expansion alloy containing 36% Nickel. It maintains nearly constant dimensions over the range of normal atmospheric temperatures and has a low coefficient of expansion from cryogenic temperatures to about +500 C. Nilo 36 also retains good strength and toughness at cryogenic temperatures. Applications include standards of length, thermostat rods, laser components and tanks and piping for the storage and transportation of liquefied gasses.Relative Grade:GradeRussiaU.S.A.JapanFranceGermanyU.K.4J3232HKA 32HF-BNSuper-Invar Super NilvarSIInvar Superieur--4J3636H 36H-BNInvar Nilvar Unipsan36Cactus LEInvar Standard Fe-Ni36 -Vacodil36 Nilos36 -Invar Nilo36 36Ni4J38-38NiFM Simonds38-7FM----Grade & Chemical Composition (see Table 1) Table 1 Grade & Chemical CompositionGradeChemical Composition (%)CSiPSCuSeMnNiCoFe4J320.050.200.0200.0200.40~0.800.20~0.6031.5~33.03.20~4.20Balance4J360.050.300.0200.0200.20~0.6035.0~37.0Balance4J380.050.200.0200.020-0.10~0.250.8035.0~37.0-Balance4J400.050.150.0200.020--0.2532.4~33.47.00~8.00BalanceNotes: 1,Under condition that the average coefficient of the linear expansion meets the requirements of the standard, the content of nickel and cobalt are allowed to deviate from the stated range. 2,The shape and dimensions of the alloys are in compliance with GB/T14985.Physical Property (see Table 2 ?Table 3) Table 2 Coefficient of Linear ExpansionGradeHeat Treatment of the SamplesMean Coefficient of Linear Expansion20~l00 C20~300 C4J32To heat the semi-finished products samples to 840 10 C, hold for 1hour, and quench in the water. Machine the samples to finished samples. And heat at 315 10 C for 1h, furnace or air cool.1.04J361.54J384J402.0Table 3 Typical Expansion CoefficientGradeMean Coefficient of Linear Expansion20~50 C20~100 C20~200 C20~300 C20~400 C20~500 C4J320.70.81.44.37.29.34J360.60.82.05.18.010.04J401.41.31.21.74.5Note: The data in the tables are just for reference.Specification: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/TubeSize Range:1. Sheet---Thickness 0.1mm~3.5mm, width: 300mm,Condition: cold rolled, bright, bright annealed2. Plate---Thickness 3.5mm~40.0mm,width: 300mm,Condition: cold rolled, hot rolled, annealed3. Round Wire---Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright annealed4. Flat Wire---Dia 0.5mm~Dia 5.0mm,length: 1000mm,Condition:flat rolled, bright annealed5. Bar---Dia 5.0mm~Dia 8.0mm,length: 2000mm,Condition:cold drawn,bright, bright annealed---Dia 8.0mm~Dia 32.0mm,length: 3000mm,Condition:hot rolled,bright, bright annealed---Dia 32.0mm~Dia 180.0mm,length: 1300mm,Condition:hot forging,peeled, turned, hot treated6. Capillary---OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length: 2500mm,Condition: cold drawn, bright, bright annealed7. Pipe---OD 120mm~8.0mm,ID 8.0mm~129mm,length: 4000mm,Condition: cold drawn, bright, bright annealed