Huona (Shanghai) New Material Co., Ltd.  

Product Name: Bright Invar 36 Strip 0.2mmx110mm for Sealing Instruments Model NO.: Invar36 Strip Powder: Not Powder Type: Fe Ni Strip Alloy: Alloy Purity: 36%Ni Standard: JIS, GB, DIN, BS, ASTM, AISI Application: Aviation, Electronics, Industrial, Medical, Chemical Material: Fe- Ni Alloy Surface: Smooth and Bright Condition: Soft Sample: Free OEM: Yes Thickness: 0.1-3mm Width: 5-220mm Trademark: Huona Transport Package: Wooden Case Specification: 0.2x110mm Origin: China HS Code: 7505120000 Product Description BrightInvar36Strip0.2mmx110mm for Sealing Instruments(Common Name: Invar, FeNi36, Invar Standard, Vacodil36)4J36 (Invar), also known generically as FeNi36 (64FeNi in the US), is a nickel-iron alloy notable for its uniquely low coefficient of thermal expansion (CTE or α).4J36 (Invar) is used where high dimensional stability is required, such as precision instruments, clocks, seismic creep gauges, television shadow-mask frames, valves in motors, and antimagnetic watches. In land surveying, when first-order (high-precision) elevation leveling is to be performed, the Level staff (leveling rod) used is made of Invar, instead of wood, fiberglass, or other metals. Invar struts were used in some pistons to limit their thermal expansion inside their cylinders.4J36 use oxyacetylene welding, electric arc welding, welding and other welding methods. Since the coefficient of expansion and chemical composition of the alloy is related should be avoided due to welding causes a change in the alloy composition, it is preferable to use Argon arc welding welding filler metals preferably contains 0.5% to 1.5% titanium, in order to reduce weld porosity and crack.Normal composition%Ni35~37.0FeBal.Co-Si≤0.3Mo-Cu-Cr-Mn0.2~0.6C≤0.05P≤0.02S≤0.02Coefficient of expansionθ/ºCα1/10-6ºC-1θ/ºCα1/10-6ºC-120~-601.820~2503.620~-401.820~3005.220~-201.620~3506.520~-01.620~4007.820~501.120~4508.920~1001.420~5009.720~1501.920~55010.420~2002.520~60011.0Typical Physical propertiesDensity (g/cm3)8.1Electrical resistivity at 20ºC(OMmm2/m)0.78Temperature factor of resistivity(20ºC~200ºC)X10-6/ºC3.7~3.9Thermal conductivity, λ/ W/(m*ºC)11Curie pointTc/ºC230Elastic Modulus,E/ Gpa144The heat treatment processAnnealing for stress reliefHeated to 530~550ºC and hold 1~2 h. Cold downannealingIn order to eliminate hardening, which be bring out in cold-rolled, cold drawing process. Annealing needs heated to 830~880ºC in vacuum,hold 30 min.The stabilization processIn protective media and heated to 830 ºC, hold 20min. ~ 1h, quenchDue to the stress generated by quenching, heated to 315ºC,hold 1~4h.PrecautionsCan not be hardened by heat treatmentSurface treatment can be sandblasting, polishing or pickling.Alloy can be used 25% hydrochloric acid pickling solution at 70 ºC to clear oxidized surfaceTypical Mechanical propertiesTensile StrengthElongationMpa%6411468997318Temperature factor of resistivityTemperature range, ºC20~5020~10020~20020~30020~400aR/ 103*ºC1.81.71.41.21.0