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Glass Sealing Precision Alloys Kovar Alloy 4J29 With Ceramic Wire / Rod / Strip

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Good quality Bimetallic Strip for sales
Good quality Bimetallic Strip for sales
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OHMALLOY can provie me only 1kg Kovar alloy wire 1.0mm with short time, that is really amazing. Thanks

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Glass Sealing Precision Alloys Kovar Alloy 4J29 With Ceramic Wire / Rod / Strip

China Glass Sealing Precision Alloys Kovar Alloy 4J29 With Ceramic Wire / Rod / Strip supplier
Glass Sealing Precision Alloys Kovar Alloy 4J29 With Ceramic Wire / Rod / Strip supplier Glass Sealing Precision Alloys Kovar Alloy 4J29 With Ceramic Wire / Rod / Strip supplier

Large Image :  Glass Sealing Precision Alloys Kovar Alloy 4J29 With Ceramic Wire / Rod / Strip

Product Details:

Place of Origin: China(Shanghai)
Brand Name: OHMALLOY
Certification: SGS, ISO
Model Number: 4J29

Payment & Shipping Terms:

Minimum Order Quantity: 30 KG
Price: negotiable
Packaging Details: Spool + Waterproof paper + Wooden case
Delivery Time: 25-35 working days
Payment Terms: L/C, D/A, D/P, T/T, Western Union
Supply Ability: 25000 KG per month
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Detailed Product Description
Material: Fe Ni Co Alloy Condition: Soft
Wire Diameter Range: 0.1mm ~ 9.0mm Surface: Bright
Density: 8.27 G/cm3 Application: Sealing Material For Ceramics

Sealing Ceramic Vacuum Switch Fe Ni Co Alloy Ceramic - To - Metal

 

 

Ohmalloy-4J33 for Sealing and matching ceramics

 

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

 

 

 

 

 

 

 

 

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

 

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

 

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

 

Glass Sealing Precision Alloys Kovar Alloy 4J29 With Ceramic Wire / Rod / Strip

Glass Sealing Precision Alloys Kovar Alloy 4J29 With Ceramic Wire / Rod / Strip

 

 

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.

Contact Details
Ohmalloy Material Co.,Ltd

Contact Person: Mr. Qiu

Tel: +8613795230939

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