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Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry

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Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry

Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry
Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry

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Product Details:
Place of Origin: China
Brand Name: Ohmalloy
Certification: ISO CE
Model Number: 4J50
Payment & Shipping Terms:
Minimum Order Quantity: 30kg
Price: USD 21-USD39/KGS
Packaging Details: coil
Delivery Time: 15 workdays
Payment Terms: L/C, T/T
Detailed Product Description
Material: FeNi Shape: Strip
Application: Sealing Material Chemical Composition: Ni Fe Co V
Product Name: 4J50 Density: 8.21g/cm3
Standard: GB ASTM AISI,ASTM/ASME/AISI/GB/DIN Color: Silvery White,bright
Surface: Bright Feature: Low Coeffficient Of Expansion From Cryogenic Temperature
High Light:

FeNi Low Expansion Alloys

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Bright Sealing Low Expansion Alloys

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FeNi50 Low Expansion Alloys

 

(Common Name:50H, N50, Vacovit 500, FeNi50)

 

4J50 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.

4J50 alloy is widely used the structure of the sealing material in the electric vacuum industry.

 

Normal composition%

Ni 49.5~50.5 Fe Bal. Co 1.0 Si ≤0.3
Mo - Cu - Cr - Mn ≤0.8
C ≤0.05 P ≤0.02 S ≤0.02 Al ≤0.1

 

Typical Physical properties

Density (g/cm3) 8.21
Electrical resistivity at 20(Ωmm2/m) 0.44
Thermal conductivity, λ/ W/(m*℃) 16.7
Curie pointTc/ ℃ 500
Elastic Modulus, E/ Gpa 158

 

Coefficient of expansion

θ/℃ α1/10-6-1 θ/℃ α1/10-6-1
20~100 9.8 20~400 9.4
20~200 9.8 20~450 9.4
20~300 9.5 20~500 9.7
20~350 9.4 20~600 10.6

 

Typical Mechanical properties

Tensile Strength Elongation
Mpa %
490 35

 

The heat treatment process

Annealing Heated to900 ±20℃in a hydrogen atmosphere
Holding time, h 1 hour
cooling With speed not more than 5 ℃ / min. cooling to below 200 ℃

 

Style of supply

Alloys Name Type Dimension
OhmAlloy-4J50 Wire D=0.1~8mm
OhmAlloy-4J50 Strip W= 5~250mm T= 0.1mm
OhmAlloy-4J50 Foil W= 10~100mm T= 0.01~0.1
OhmAlloy-4J50 Bar Dia=8~100mm L=50~1000

 

Sealing FeNi Low Expansion Alloys For Electric Vacuum Industry 0

Contact Details
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Contact Person: Mr. Qiu

Tel: +8613795230939

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