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ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy

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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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ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy

ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy
ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy

Large Image :  ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy Get Best Price

Product Details:
Place of Origin: China(Shanghai)
Brand Name: OHMALLOY
Certification: ISO,SGS
Model Number: 4J42
Payment & Shipping Terms:
Minimum Order Quantity: 20kg
Price: negotiable
Packaging Details: in coil
Supply Ability: 5000kg/month
Detailed Product Description
Material: Invar Alloy Surface: Bright
Color: Oxidization
Highlight:

invar alloy

,

thermal expansion invar

Ohmalloy Material Co.,Ltd is a high-tech enterprise which specialized in making all kinds of alloy such as high resistance alloy, low-resistance copper nickel alloy, precision alloy, FeCrAl alloy and thermocouple Alloy.
Ohmalloy Material Co.,Ltd have a full production line from melting, surface cleaning, rolling and slitting, full set of testing machine and can meet all kinds of technical requirement from customer. Our product is widely used in heating equipment, big steel mill, mineral, electrical equipment, food machinery, auto industry, aerospace industry. Our product not only is popular in domestic market, but also been exported to all over the world.
Our company aims to be the best-quality alloy producer in the world. We insist on developing the more advanced alloy strip technology, to serve all the customer, improve people’s living level, make a more green earth in the future
ISO Bright Surface Low Expansion Alloys 4J42 Thermal Expansion Invar Alloy 0
 
 
OhmAlloy-4J42 (Expansion alloy)
(Common Name: 42H Glass Sealing 42, Nilo42, N42, FeNi42)
4J42 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.
4J42 alloy is widely used the structure of the sealing material in the electric vacuum industry.
 
 

Normal composition%

Ni 41.5~42.5 Fe Bal. Co - 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) 8.12
Electrical resistivity at 20℃(Ωmm2/m) 0.61
Thermal conductivity, λ/ W/(m*℃) 14.6
Curie point Tc/ ℃ 360
Elastic Modulus, E/ Gpa 147

 
 
 
 
 
 
Coefficient of expansion

θ/℃ α1/10-6-1 θ/℃ α1/10-6-1
20~100 5.6 20~400 5.9
20~200 4.9 20~450 6.9
20~300 4.8 20~500 7.8
20~350 4.95 20~600 9.2

 

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-4J42 Wire D= 0.1~8mm
OhmAlloy-4J42 Strip W= 5~250mm T= 0.1mm
OhmAlloy-4J42 Foil W= 10~100mm T= 0.01~0.1
OhmAlloy-4J42 Bar Dia= 8~100mm L= 50~1000


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 account, wire transfer for sample amount also ok.
3. Customer do not have express account. How will we 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.How do you guarantee the quality?
We have QC who are responsible for tracking and monitoring whole production process, and we are willing to accept customer‘s testing.
7. What's our working time?
We will give you reply through email/phone Online chat tool within 24 hours. No matter working day or holidays.

 

Contact Details
Ohmalloy Material Co.,Ltd

Contact Person: Mr. Qiu

Tel: +8613795230939

Send your inquiry directly to us