Product Description
Invar 36 Alloy is a special low expansion iron nickel alloy with an ultra-low coefficient of expansion. The control of carbon and manganese components is very important. Cold deformation can reduce the coefficient of thermal expansion, while heat treatment within a specific temperature range can stabilize the coefficient of thermal expansion. Invar 36 has corrosion resistance in dry air at room temperature. In other harsh environments, such as humid air, corrosion (rusting) may occur.Normal shape we can supply is plate,Wire,Strip,Foil,Bar etc.
Chemical Composition of Invar 36 Plate
|
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 of Invar 36 Plate
|
Density (g/cm3) |
8.1 |
|
Electrical resistivity at 20ºC(ohm 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 |
Typical Mechanical properties of Invar 36 Plate
|
Tensile Strength |
Elongation |
|
Mpa |
% |
|
641 |
14 |
|
689 |
9 |
|
731 |
8 |
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 |
Shape and Size Available
|
Type |
Dimension |
|
|
Wire |
D= 0.1~8mm |
|
|
Strip |
W= 5~250mm |
T= 0.1mm |
|
Plate |
W=5-2500mm |
T=1-50mm,L=1000-6000mm |
|
Foil |
W= 10~100mm |
T= 0.01~0.1mm |
|
Bar |
Dia= 8~100mm |
L= 50~1000mm |
Pls confirm below information when you inquiry us
1. Delivery status: forged, cast, annealed, solid solution, aging state, etc;
2. Appearance status: black skin state, polished state, acid washed state;
3. Dimensional specifications: nominal size, tolerance range, fixed length, non fixed length, standard size;
4. Quality standards: GB, HB, GJB, AMS, GB/T, ASTM, ASME, JIS, DIN, EN, and others;
5. Product classification: Bar,Tube ,Strip, Wire,Flange,Plate,Ring,Round Cake,Forging ,casting Welding or drawing. We can produce according to your requirements
6. Order quantity
7. Delivery time
Our Advantages
Reliable Quality System
OEM/ ODM Services
No MOQ Required, More Opportunities
Excellent Pre-sales Service & After-sales Service
Fast Shipping & Best Price
FAQ
Q:What information should i confirm you when i send inquiry
A:Sometimes we need product specification like material standard or Grade, size, Qty, shipping port, Terms like FOB or CIF etc.
Q: How long of the delivery time?
A: Usually, the shipment can be delivery within 15-30days after the order confirmed.
Q: How about the payment items?
A: LC, T/T, PayPal, Western Union etc.
Q: Which country have you exported to?
A: Our main market is South America, Middle East, Africa and Europe. And have built long time relationship with Pakistan, US, Norway, Germany, Korea, Russia,Taiwan customers.And got continue orders from them every month.
Q: Can i visit your factory?
A: Sure! Welcome in any time.
Q: How about the MOQ?
A: Normally we dont have MOQ requirement, We always expect more opportunities with you. But for some special material or special size let's communicate the actual status.
Q: Can you support us in the applications?
A: It is our pleasure!
Q: Can you accept the inspection from a third party?
A: Yes. We have enough experience to cooperate with the inspection project.
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