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4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry
4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry
4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry
4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry
Specifications
Brand Name :
OHMALLOY
Model Number :
4J50
Certification :
ISO，SGS
Place of Origin :
China(Shanghai)
MOQ :
20kg
Price :
negotiable
Supply Ability :
5000kg/month
Delivery Time :
7-20 Days after your deposit recieved
Packaging Details :
In Wooden Box
Description

OhmAlloy-4J33 (Expansion alloy)


(Common Name: 33НК, 4J33, KV-4, Ni33Co17)

4J33 alloy has a close Linear expansion coefficient with 95% Al2O3 ceramic in the range of -60 to 600 degrees Celsius. it is an Important sealing structural material in the electric vacuum industry; Mainly used for matching and ceramic sealing.

Normal composition%

Ni 32.0~33.6 Fe Bal. Co 14.0~15.2 Si ≤0.3
Mo - Cu - Cr - Mn ≤0.5
C ≤0.05 P ≤0.02 S ≤0.02

Typical Physical properties

Density (g/cm3) 8.27
Electrical resistivity at 20℃(Ωmm2/m) 0.46
Thermal conductivity, λ/ W/(m*℃) 17.6
Curie point Tc/ ℃ 440
Elastic Modulus, E/ Gpa 139

Coefficient of expansion

θ/℃ α1/10-6℃-1 θ/℃ α1/10-6℃-1
20~300 6.3 20~400 6.1
20~500 6.9 20~600 8.3

Typical Mechanical properties

Tensile Strength Elongation
Mpa %
539 32

The heat treatment process
Stress relief annealing Heating to 470~540℃. Keep 1~2h, cooling in the air
Annealing Heating to 750~ 900℃ In the medium vacuum
Holding time, h 15min. ~ 1 hour
cooling In the air

Style of suppDly

Alloys Name Type Dimension
OhmAlloy-4J33 Wire D= 0.1~8 mm
OhmAlloy-4J33 Strip W= 5~250 mm T= 0.1 mm
OhmAlloy-4J33 Foil W= 10~100 mm T= 0.01~0.1 mm
OhmAlloy-4J33 Bar Dia= 8~100 mm L= 50~1000 mm

4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry

Product tags

clean condenser coils

,

thermal arc welder parts

,

soldering aluminum radiator
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4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry

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Product Detail
Brand Name :
OHMALLOY
Model Number :
4J50
Certification :
ISO，SGS
Place of Origin :
China(Shanghai)
MOQ :
20kg
Price :
negotiable
Contact Supplier
4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy For Electric Vacuum Industry
4J50 Low Thermal Expansion Metals And Alloy Sealant Alloy 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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