High Quality Expansion Alloy Strip Ohmalloy4j33 for Electronic Product

Product Type: Sheet
Material: Feni Alloy
Carbon Content: No
PCD: No
ET: No
Hole: No
Samples:
US$ 0/Piece 1 Piece(Min.Order)
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Basic Info.

Model NO.
Ohmalloy4j33
Certificate
SGS, ISO, RoHS
Sample
Free Sample
Resistivity(μΩ.M)
0.46
Density, g/cm3
8.27
Surface Treatment
Bright or Oxidation
Width
9~250 mm
Application
Sealing Material
Elastic Modulus, E/ Gpa
139
Curie Point Tc/ ºC
440
Transport Package
Coil+ Waterproof Paper+ Wooden Case
Specification
0.1~10.0 mm
Trademark
Ohmalloy
Origin
Shanghai, China
HS Code
7506200000
Production Capacity
35000 Kgs Per Month

Product Description

OHMALLOY
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%
Ni32.0~33.6FeBal.Co14.0~15.2Si≤0.3
Mo-Cu-Cr-Mn≤0.5
C≤0.05P≤0.02S≤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   Tc/ ºC440
Elastic Modulus,  E/ Gpa139


 
Coefficient of expansion
θ/ºCα1/10-6ºC-1θ/ºCα1/10-6ºC-1
20~3006.320~4006.1
20~5006.920~6008.3
 
Typical Mechanical properties
Tensile StrengthElongation
Mpa%
53932
 
The heat treatment process
Stress relief annealingHeating to 470~540ºC. Keep 1~2h, cooling in the air
AnnealingHeating to 750~ 900ºC In the medium vacuum
Holding time, h15min. ~ 1 hour
coolingIn the air

 
Style of supply
Alloys NameTypeDimension 
OhmAlloy-4J33WireD= 0.1~8 mm 
OhmAlloy-4J33StripW= 5~250 mmT= 0.1 mm
OhmAlloy-4J33FoilW= 10~100 mmT= 0.01~0.1 mm
OhmAlloy-4J33BarDia= 8~100 mmL= 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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