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Ohmalloy Material Co.,Ltd

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Good quality Bimetallic Strip for sales
Good quality Bimetallic Strip for sales
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Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry

China Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry supplier
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry supplier Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry supplier Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry supplier

Large Image :  Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry

Product Details:

Place of Origin: China(Shanghai)
Brand Name: OHMALLOY
Certification: ISO9001-2008
Model Number: 4J50

Payment & Shipping Terms:

Minimum Order Quantity: 20KG
Price: negotiable
Packaging Details: in spool/ carton packed
Delivery Time: 7-10 days
Payment Terms: L/C, T/T, Western Union, MoneyGram
Supply Ability: 50 Tons per month
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Detailed Product Description
Material: FeNi50 Density (g/cm3): 8.21
Electrical Resistivity At 20℃(Ωmm2/m): 0.44 Tensile Strength: 490Mpa
Elongation: 35%

OhmAlloy-4J50 (Expansion alloy)


(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 point Tc/ ℃ 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 to 900 ±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

Contact Details
Ohmalloy Material Co.,Ltd

Contact Person: Mr. Qiu

Tel: +8613795230939

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