Invar Sheet Ohmalloy4j36 for Precision Instruments Frames

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

Contact Supplier

Gold Member Since 2012

Suppliers with verified business licenses

Manufacturer/Factory, Trading Company

Basic Info.

Model NO.
Ohmalloy4j36
Certificate
SGS, ISO, RoHS
Sample
Free Sample
Resistivity(μΩ.M)
0.78
Density, g/cm3
8.1
Surface Treatment
Bright or Oxidation
Width
9~250 mm
Application
Sealing Material
Elastic Modulus, E/ Gpa
144
Curie Point Tc/ ºC
230
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-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).
 
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.
 
OhmAlloy-4J36 use oxyacetylene welding, electric arc welding, welding and other welding methods. Since the coefficient of expansion and chemical composition of the alloy is related should be avoided due to welding causes a change in the alloy composition, it is preferable to use Argon arc welding welding filler metals preferably contains 0.5% to 1.5% titanium, in order to reduce weld porosity and crack.

Normal composition%

Ni35~37.0FeBal.Co-Si≤0.3
Mo-Cu-Cr-Mn0.2~0.6
C≤0.05P≤0.02S≤0.02  
 

Typical Physical properties

Density (g/cm3)8.1
Electrical resistivity at 20ºC(Om*mm2/m)0.78
Temperature factor of resistivity(20ºC~200ºC)X10-6/ºC3.7~3.9
Thermal conductivity, λ/ W/(m*ºC)11
Curie point   Tc/ ºC230
Elastic Modulus,  E/ Gpa144

 
Coefficient of expansion
θ/ºCα1/10-6ºC-1θ/ºCα1/10-6ºC-1
20~-601.820~2503.6
20~-401.820~3005.2
20~-201.620~3506.5
20~-01.620~4007.8
20~501.120~4508.9
20~1001.420~5009.7
20~1501.920~55010.4
20~2002.520~60011.0

Typical Mechanical properties

Tensile StrengthElongation
Mpa%
64114
6899
7318
 
Temperature factor of resistivity
Temperature range, ºC20~5020~10020~20020~30020~400
aR/ 103 *ºC1.81.71.41.21.0
 
The heat treatment process
Annealing for stress reliefHeated to 530~550ºC and hold 1~2 h. Cold down
annealingIn 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
  1. In protective media and heated to 830 ºC, hold 20min. ~ 1h, quench
  2. Due to the stress generated by quenching, heated to 315ºC,hold 1~4h.
Precautions
  1. Can not be hardened by heat treatment
  2. Surface treatment can be sandblasting, polishing or pickling.
  3. Alloy can be used 25% hydrochloric acid pickling solution at 70 ºC to clear oxidized surface
 
Style of supply
Alloys NameTypeDimension 
OhmAlloy-4J36WireD= 0.1~8mm 
OhmAlloy-4J36StripW= 5~250mmT= 0.1mm
OhmAlloy-4J36FoilW= 10~100mmT= 0.01~0.1mm
OhmAlloy-4J36BarDia= 8~100mmL= 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 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.

Send your message to this supplier

*From:
*To:
avatar Mr. Qiu
*Message:

Enter between 20 to 4,000 characters.

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