Products

4j36/Invar/Feni36 Low Expansion Alloy Wire

China 4j36/Invar/Feni36 Low Expansion Alloy Wire, Find details about China Invar 36 Wire, Low Expansion Alloy from 4j36/Invar/Feni36 Low Expansion Alloy Wire

Model NO.
4j36
Material
Fe- Ni Alloy
Surface
Smooth and Bright
Condition
Soft
Density
8.1
Resisivity
0.78
Curie Point
230
Chemical Composition
Feni36
Grade
4j36/ Uns K93600/ AISI/ASTM Invar36/W. Nr 1.3912
Thermal Conductivity
11
Elastic Modulus
144
Trademark
HUONA
Transport Package
Wooden Case
Specification
1.5x200
Origin
Shanghai, China
HS Code
7505120000
Model NO.
4j36
Material
Fe- Ni Alloy
Surface
Smooth and Bright
Condition
Soft
Density
8.1
Resisivity
0.78
Curie Point
230
Chemical Composition
Feni36
Grade
4j36/ Uns K93600/ AISI/ASTM Invar36/W. Nr 1.3912
Thermal Conductivity
11
Elastic Modulus
144
Trademark
HUONA
Transport Package
Wooden Case
Specification
1.5x200
Origin
Shanghai, China
HS Code
7505120000

4j36/Invar/Feni36 Low Expansion Alloy Wire

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

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).

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.

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.

Controlled Expansion and Glass Sealing Alloys
German standard number Tradename DIN UNS
1.3912Alloy 3617745K93600/93601
1.3917 Alloy 42 17745K94100
1.3922 Alloy 4817745 K94800
1.3981Pernifer2918 17745 K94610
2.4478 NiFe 4717745 N14052
2.4486 NiFe47Cr17745-

Normal composition%

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

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 Physical properties

Density (g/cm3)8.1
Electrical resistivity at 20ºC(OMmm2/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

 

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

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

 

4j36/Invar/Feni36 Low Expansion Alloy Wire
4j36/Invar/Feni36 Low Expansion Alloy Wire
4j36/Invar/Feni36 Low Expansion Alloy Wire
4j36/Invar/Feni36 Low Expansion Alloy Wire
4j36/Invar/Feni36 Low Expansion Alloy Wire
4j36/Invar/Feni36 Low Expansion Alloy Wire
4j36/Invar/Feni36 Low Expansion Alloy Wire
4j36/Invar/Feni36 Low Expansion Alloy Wire
4j36/Invar/Feni36 Low Expansion Alloy Wire


FAQ 
1. How long i can get the feedback after we sent the enquiry?
A: We will reply you within 12 hours in working day.

2. How can I get some samples?
A: We are pleased to offer you sample, the delivery time is about 4-7 days.

3. Are you a factory?
A: Yes. We are. We have specialized in this field over 10 Year.

4. What is the delivery time?
A:15 days normally, detail delivery date should be decided according to production season and order quantity.


 

You Might Also Like