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Build Your Online Product Catalogs?
| Product Name: |
Ohmalloy-China manufacture invar 36 special alloy 4J36
|
| Supply Ability: |
80000 Kilogram/Kilograms per Week |
| Related proudcts |
coil wire, |
| Specifications |
0.1~8mm |
| Price Term: |
FOB |
| Port of loading: |
shanghai |
| Minimum Order |
1 Kilogram/Kilograms |
| Unit Price: |
US $15 - 30 / Kilogram |
|
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¨Ciron alloy notable for its uniquely low coefficient of thermal expansion (CTE or ¦Á).
The name Invar comes from the word invariable, referring to its relative lack of expansion or contraction with temperature changes.
It was invented in 1896 by Swiss physicist Charles ¨¦douard 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 ¡Ü0.3
Mo - Cu - Cr - Mn 0.2~0.6
C ¡Ü0.05 P ¡Ü0.02 S ¡Ü0.02
Typical Physical properties
Density (g/cm3) 8.1
Electrical resistivity at 20℃(&©|8486;mm2/m) 0.78
Temperature factor of resistivity£¨20℃~200℃£©X10-6/℃ 3.7~3.9
Thermal conductivity, ¦Ë/ W/(m*℃) 11
Curie point Tc/ ℃ 230
Elastic Modulus, E/ Gpa 144
Coefficient of expansion
¦È/℃ ¦Á1/10-6℃-1 ¦È/℃ ¦Á1/10-6℃-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
*** %
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℃ a |
| Company: |
ohmalloy material co., ltd
|
| Contact: |
Mr. xiaofeng Qiu |
| Address: |
youyi road, baoshan, shanghai |
| Postcode: |
|
| Tel: |
66796338 |
| Fax: |
66796339 |
| E-mail: |
|
|
|
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