Expansion Alloy 4j33 Strip Be Used for Matching Ceramic

Product Details
Customization: Available
Product Type: Strip
Material: Feni Alloy
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  • Expansion Alloy 4j33 Strip Be Used for Matching Ceramic
  • Expansion Alloy 4j33 Strip Be Used for Matching Ceramic
  • Expansion Alloy 4j33 Strip Be Used for Matching Ceramic
  • Expansion Alloy 4j33 Strip Be Used for Matching Ceramic
  • Expansion Alloy 4j33 Strip Be Used for Matching Ceramic
  • Expansion Alloy 4j33 Strip Be Used for Matching Ceramic
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Basic Info.

Carbon Content
No
PCD
No
ET
No
Hole
No
Certificate
SGS, ISO, RoHS
Sample
Free Sample
Resistivity(μΩ.M)
0.46
Density, g/cm3
8.2
Surface Treatment
Bright or Oxidation
Width
9~250 mm
Application
Sealing Material
Elastic Modulus, E/ Gpa
139
Temperature Factor of Resistivity
3.7~3.9
Curie Point Tc/ ºC
440
Transport Package
Coil+ Waterproof Paper+ Wooden Case
Specification
Thickness: 0.1~3.0 mm
Trademark
Ohmalloy
Origin
Shanghai, China
HS Code
7226999001
Production Capacity
35000 Kgs Per Month

Packaging & Delivery

Package Size
50.00cm * 50.00cm * 30.00cm
Package Gross Weight
30.000kg

Product 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 20ºC(Om*mm2/m) 0.46
Thermal conductivity, λ/ W/(m*ºC) 17.6
Curie point   TcºC 440
Elastic Modulus,  E/ Gpa 139




Coefficient of expansion
θ/ºC α1/10-6ºC-1 θ/ºC α1/10-6ºC-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 470~540ºC. Keep 1~2h, cooling in the air
Annealing Heating to 750~ 900ºC In the medium vacuum
Holding time, h 15min. ~ 1 hour
cooling In the air

Style of supply
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



FAQ

1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If we do not have, for spool wire, we can produce 1 spool, about 2-3kg. For coil wire, 25kg.
2. How can you pay for small sample amount?
We have Western union account, wire transfer for sample amount also ok.

3. Customer do not have express account. How will us arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.

4. What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.

5. Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.

6. What's our working time?
We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays.

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