Bright Invar 36 Strip (0.2mmx110mm) for Sealing Instruments

Product Details
Customization: Available
Product Type: Strip
Material: Feni Alloy
Gold Member Since 2012

Suppliers with verified business licenses

Audited Supplier

Audited by an independent third-party inspection agency

to see all verified strength labels (6)
Find Similar Products

Basic Info.

Model NO.
OhmAlloy-4J36
PCD
0~100
ET
0~100
Hole
0
Thickness
0.05~5mm
Width
10-250mm
Condition
Bright Surface, Soft
Magnetic Properties
Less Than 230 Celsius Is Ferromagnetic.
Heat Treatment
Done
Weight Coil
10~50 Kg
Transport Package
Coil+ Waterproof Paper+ Wooden Case
Specification
SGS
Trademark
OhmAlloy-4J36
HS Code
722699900
Production Capacity
10000 Kgs Per Month

Product Description

OhmAlloy-4J36  (Expansion alloy)

(Common Name: Invar, FeNi36, Invar Standard, Vacodil36)

OhmAlloy-4J36 (Invar), also known generically as FeNi36 (64FeNi in the US), is a nickel-iron alloy notable for its uniquely low coefficient of thermal expansion (CTE or α).
 
It was invented in 1896 by Swiss physicist Charles Édouard Guillaume. He received the Nobel Prize in Physics in 1920 for this discovery, which enabled improvements in scientific instruments.
OhmAlloy-4J36 (Invar) is used where high dimensional stability is required, such as precision instruments, clocks, seismic creep gauges, television shadow-mask frames, valves in motors, and antimagnetic watches. In land surveying, when first-order (high-precision) elevation leveling is to be performed, the Level staff (leveling rod) used is made of Invar, instead of wood, fiberglass, or other metals. Invar struts were used in some pistons to limit their thermal expansion inside their cylinders.
 
 

Normal composition%

Ni
35~37.0 Fe Bal. Co - Si ≤0.3
Mo - Cu - Cr - Mn 0.2~0.6
C ≤0.05 P ≤0.02 S ≤0.02    
 
 

Typical Physical properties

Density (g/cm3)
8.1
Electrical resistivity at 20ºC(mm2/m) 0.78
Temperature factor of resistivity(20ºC~200ºC)X10-6/ºC 3.7~3.9
Thermal conductivity, λ/ W/(m*ºC) 11
Curie point   Tc/ ºC 230
Elastic Modulus,  E/ Gpa 144

 
 
Coefficient of expansion
θ/ºC α1/10-6ºC-1 θ/ºC α1/10-6ºC-1
20~-60 1.8 20~250 3.6
20~-40 1.8 20~300 5.2
20~-20 1.6 20~350 6.5
20~-0 1.6 20~400 7.8
20~50 1.1 20~450 8.9
20~100 1.4 20~500 9.7
20~150 1.9 20~550 10.4
20~200 2.5 20~600 11.0



Typical Mechanical properties

Tensile Strength
Elongation
Mpa %
641 14
689 9
731 8
 
Temperature factor of resistivity
Temperature range, ºC 20~50 20~100 20~200 20~300 20~400
aR/ 103 *ºC 1.8 1.7 1.4 1.2 1.0
 
The heat treatment process
Annealing for stress relief Heated to 530~550ºC and hold 1~2 h. Cold down
annealing In order to eliminate hardening, which be bring out in cold-rolled, cold drawing process. Annealing needs heated to 830~880ºC in vacuum,hold 30 min.
The stabilization process
In protective media and heated to 830 ºC, hold 20min. ~ 1h, quench
Due to the stress generated by quenching, heated to 315ºC,hold 1~4h.

Precautions

Can not be hardened by heat treatment
Surface treatment can be sandblasting, polishing or pickling.
Alloy can be used 25% hydrochloric acid pickling solution at 70 ºC to clear oxidized surface

 
Style of supply
Alloys Name Type Dimension  
OhmAlloy-4J36 Wire D= 0.1~8mm  
OhmAlloy-4J36 Strip W= 5~250mm T= 0.1mm
OhmAlloy-4J36 Foil W= 10~100mm T= 0.01~0.1
OhmAlloy-4J36 Bar Dia= 8~100mm L= 50~1000
         
 
 
Good luck to you!

Send your message to this supplier

*From:
*To:
*Message:

Enter between 20 to 4,000 characters.

This is not what you are looking for? Post a Sourcing Request Now
Contact Supplier