QUALITY BEST, INTEGRITY FIRST.

www.ohmalloy.com

Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Company News
Home ProductsLow Expansion Alloys

4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry

I'm Online Chat Now
Certification
China Ohmalloy Material Co.,Ltd certification
China Ohmalloy Material Co.,Ltd certification
I search for Nichrome plate long time, and successfully bought it from Ohmalloy material. OHMALLOY provide real good service in alloy service and can always help me in finding the correct resistance alloy.

—— Mike Harness

OHMALLOY can provie me only 1kg Kovar alloy wire 1.0mm with short time, that is really amazing. Thanks

—— Janey

Really professional in thermocouple wire and cable, what i want just can get from OHMALLOY

—— Chris

Enamelled Constantan 0.08mm, i never expect to get only 2kg of it. But OHMALLOY supply it to me with good quality. God Jesus! Such a reliable supplier from china

—— Aaron

4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry

4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry
4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry 4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry 4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry 4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry 4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry

Large Image :  4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry Get Best Price

Product Details:

Place of Origin: China
Brand Name: Ohmalloy
Certification: ISO CE
Model Number: 4J50

Payment & Shipping Terms:

Minimum Order Quantity: 30kg
Price: USD 21-USD39/KGS
Packaging Details: coil
Delivery Time: 15 workdays
Payment Terms: L/C, T/T
Detailed Product Description
Material: FeNi Shape: Strip
Application: Sealing Material Chemical Composition: Ni Fe Co V
Product Name: 4J50 Density: 8.21g/cm3
Standard: GB ASTM AISI,ASTM/ASME/AISI/GB/DIN Color: Silvery White,bright
Surface: Bright Feature: Low Coeffficient Of Expansion From Cryogenic Temperature

 

(Common Name:50H, N50, Vacovit 500, FeNi50)

 

4J50 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.

4J50 alloy is widely used the structure of the sealing material in the electric vacuum industry.

 

Normal composition%

Ni 49.5~50.5 Fe Bal. Co 1.0 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) 8.21
Electrical resistivity at 20(Ωmm2/m) 0.44
Thermal conductivity, λ/ W/(m*℃) 16.7
Curie pointTc/ 500
Elastic Modulus, E/ Gpa 158

 

Coefficient of expansion

θ/℃ α1/10-6-1 θ/℃ α1/10-6-1
20~100 9.8 20~400 9.4
20~200 9.8 20~450 9.4
20~300 9.5 20~500 9.7
20~350 9.4 20~600 10.6

 

Typical Mechanical properties

Tensile Strength Elongation
Mpa %
490 35

 

The heat treatment process

Annealing Heated to900 ±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-4J50 Wire D=0.1~8mm
OhmAlloy-4J50 Strip W= 5~250mm T= 0.1mm
OhmAlloy-4J50 Foil W= 10~100mm T= 0.01~0.1
OhmAlloy-4J50 Bar Dia=8~100mm L=50~1000

 

4J50 strip N50 low coefficient of expansion alloy for sealing material in the electric vacuum industry 0

Contact Details
Ohmalloy Material Co.,Ltd

Contact Person: Jiang

Send your inquiry directly to us