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4j50 (Expansion-alloy) 50h, N50, Vacovit 500, Feni50 pictures & photos

4j50 (Expansion-alloy) 50h, N50, Vacovit 500, Feni50

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Min. Order / Reference FOB Price
25 kg	US $18.00/ kg

Local Area:	Baoshan, Yunnan, China
R&D Capacity:	OEM, ODM, Other
Payment Terms:	LC, T/T, PayPal

Transport Package:	Plywood
Specification:	0.02mm-10mm
Trademark:	Ohmalloy

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Product Description

OhmAlloy-4J50 (Expansion alloy)(Common Name:50H, N50, Vacovit 500, FeNi50)
4J50alloy is mainly composed of iron, nickel elements. It is characterized with a fixed coefficient of expansion. Increase the thermal expansion coefficient and the Curie pointwith increase of nickel content.
4J50 alloy is widely used the structure of the sealing material in the electric vacuum industry.
Normal composition%Ni49.5~50.5FeBal.Co1.0Si≤0.3Mo-Cu-Cr-Mn≤0.8C≤0.05P≤0.02S≤0.02Al≤0.1Typical Physical propertiesDensity (g/cm3)8.21Electrical resistivity at 20ºC(Ωmm2/m)0.44Thermal conductivity, λ/ W/(m*ºC)16.7Curie pointTc/ ºC500Elastic Modulus, E/ Gpa158Coefficient of expansionθ/ºCα1/10-6ºC-1θ/ºCα1/10-6ºC-120~1009.820~4009.420~2009.820~4509.420~3009.520~5009.720~3509.420~60010.6Typical Mechanical propertiesTensile StrengthElongationMpa%49035The heat treatment processAnnealing Heated to900 ±20ºCin a hydrogen atmosphereHolding time, h1 hourcoolingWith speed not more than 5 ºC/ min.cooling to below 200 ºC
Style of supplyAlloys NameTypeDimensionOhmAlloy-4J50WireD= 0.1~8mmOhmAlloy-4J50StripW= 5~250mmT= 0.1mmOhmAlloy-4J50FoilW= 10~100mmT= 0.01~0.1OhmAlloy-4J50BarDia= 8~100mmL= 50~1000