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Thickness 0.4mm Vacodil 36 Low Expansion Alloys For Creep Gauges

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Thickness 0.4mm Vacodil 36 Low Expansion Alloys For Creep Gauges

Thickness 0.4mm Vacodil 36 Low Expansion Alloys For Creep Gauges
Thickness 0.4mm Vacodil 36 Low Expansion Alloys For Creep Gauges
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Product Details:
Place of Origin: China
Brand Name: Ohmalloy
Certification: ISO CE
Model Number: Invar 36
Payment & Shipping Terms:
Minimum Order Quantity: 100kg
Packaging Details: coil
Delivery Time: 15 workdays
Payment Terms: L/C, T/T,
Supply Ability: 10000kg/week
Detailed Product Description
Material: FeNi Chemical: Fe64% Ni36%
Density: 8.1g/cm3 Surface: Bright &smooth
High Light:

Vacodil 36 Low Expansion Alloys

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Thickness 0.4mm Low Expansion Alloys

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Creep Gauges Low Expansion Alloys

Invar Standard coil strip Thickness 0.4mm Vacodil36 strip
 

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).
 

Name INVAR comes from the unchanged word, refer to its relative lack of expansion or contraction with temperature changes.

It was invented by the Swiss physicist Charles éduardguillaume in 1896. He received 1920 Nobel Physics Award in 1920, which is the discovery that improves 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.
 

Thickness 0.4mm Vacodil 36 Low Expansion Alloys For Creep Gauges 0

 

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 20℃(Ωmm2/m) 0.78
Temperature factor of resistivity(20℃~200℃)X10-6/℃ 3.7~3.9
Thermal conductivity, λ/ W/(m*℃) 11
Curie point Tc/ ℃ 230
Elastic Modulus, E/ Gpa 144

 

Coefficient of expansion

θ/℃ α1/10-6-1 θ/℃ α1/10-6-1
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, ℃ 20~50 20~100 20~200 20~300 20~400
aR/ 103 *℃ 1.8 1.7 1.4 1.2 1.0

 

The heat treatment process
Annealing for stress relief Heated to 530~550℃ 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 830~880℃ in vacuum,hold 30 min.
The stabilization process
  • In protective media and heated to 830 ℃, hold 20min. ~ 1h, quench
  • Due to the stress generated by quenching, heated to 315℃,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 ℃ 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

 

Thickness 0.4mm Vacodil 36 Low Expansion Alloys For Creep Gauges 1
 

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 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.

Contact Details
Ohmalloy Material Co.,Ltd

Contact Person: Mr. Qiu

Tel: +8613795230939

Send your inquiry directly to us