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Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Specifications
Brand Name :
OHMALLOY
Model Number :
4J50
Certification :
ISO9001-2008
Place of Origin :
China(Shanghai）
MOQ :
20KG
Price :
negotiable
Payment Terms :
L/C, T/T, , MoneyGram
Supply Ability :
50 Tons per month
Delivery Time :
7-10 days
Packaging Details :
in spool/ carton packed
Material :
FeNi50
Density (g/cm3) :
8.21
Electrical resistivity at 20℃(Ωmm2/m) :
0.44
Tensile Strength :
490Mpa
Elongation :
35%
Description

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
Product tags

iron core transformer 79

,

transformers iron core

,

iron core for transformer
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Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry

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Product Detail
Brand Name :
OHMALLOY
Model Number :
4J50
Certification :
ISO9001-2008
Place of Origin :
China(Shanghai）
MOQ :
20KG
Price :
negotiable
Contact Supplier
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry
Iron Nickel Base Nilo50 Low Expansion Alloys 4J50 For Electric Vacuum Industry

Ohmalloy Material Co.,Ltd

Verified Supplier
10 Years
shanghai, shanghai
Since 2008
Business Type :
Manufacturer, Distributor/Wholesaler, Exporter, Trading Company
Main Products :
FeCrAl Alloy, Nickel Strip, Bimetallic Strip
Total Annual :
4000000-6000000
Employee Number :
20~50
Certification Level :
Verified Supplier
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