Ohmalloy Material Co., Ltd.  

Product Name: The Best Supplier Ohmalloy Feni42 Tube Sealing Aircraft Vacuum Instruments Model NO.: OhmAlloy4J42 Hole: No ET: No PCD: No Carbon Content: No Material: Feni Alloy Product Type: Tube Certificate: SGS, ISO, RoHS Sample: Free Sample Resistivity(μΩ.M): 0.61 Density, g/cm3: 8.12 Surface Treatment: Bright or Oxidation Application: Sealing Material Elastic Modulus, E/ Gpa: 147 Curie Point Tc/ ºC: 360 Diameter: 1.5~20mm Trademark: Ohmalloy Transport Package: Waterproof Paper+ Wooden Case Specification: Thickness: 0.1~10.0 mm Origin: Shanghai, China HS Code: 7507120000 Product Description OHMALLOYOhmAlloy-4J42 (Expansion alloy)(Common Name: 42H Glass Sealing 42, Nilo42, N42, FeNi42)4J42 alloy is mainly composed of iron, nickel elements. It is characterized with a fixed coefficient of expansion. Increase the thermal expansion coefficient and the Curie point with increase of nickel content.4J42 alloy is widely used the structure of the sealing material in the electric vacuum industry.Normal composition%Ni41.5~42.5FeBal.Co-Si≤0.3Mo-Cu-Cr-Mn≤0.8C≤0.05P≤0.02S≤0.02Al≤0.1Typical Physical propertiesDensity (g/cm3)8.12Electrical resistivity at 20ºC(Om*mm2/m)0.61Thermal conductivity, λ/ W/(m*ºC)14.6Curie point Tc/ ºC360Elastic Modulus, E/ Gpa147Coefficient of expansionθ/ºCα1/10-6ºC-1θ/ºCα1/10-6ºC-120~1005.620~4005.920~2004.920~4506.920~3004.820~5007.820~3504.9520~6009.2Typical Mechanical propertiesTensile StrengthElongationMpa%49035The heat treatment processAnnealingHeated to 900 ±20ºC in a hydrogen atmosphereHolding time, h1 hourcoolingWith speed not more than 5 ºC / min. cooling to below 200 ºCStyle of supplyAlloys NameTypeDimensionOhmAlloy-4J42WireD= 0.1~8mmOhmAlloy-4J42StripW= 5~250mmT= 0.1mmOhmAlloy-4J42FoilW= 10~100mmT= 0.01~0.1mmOhmAlloy-4J42BarDia= 8~100mmL= 50~1000FAQ1. What's the minimum quantity customer can order?If we have your size in stock, we can provide any quantity you want.If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.2. How can you pay for small sample amount?We have Western union account, wire transfer for sample amount also ok.3. Customer do not have express account. How will us arrange the delivery for sample order?Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.4. What's our payment terms?We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.5. Do you provide free samples?If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.6. What's our working time?We will give you reply through email/phone online contact tool within 24 hours. No matter working day or holidays.