Detalles del producto
Lugar de origen: Shanghái, China
Nombre de la marca: TANKII
Certificación: ISO9001, SGS
Número de modelo: invar36
Pago y términos de envío
Cantidad de orden mínima: 10 kilogramos
Precio: Negociable
Detalles de empaquetado: caja de madera
Tiempo de entrega: 7-20 días
Condiciones de pago: LC, T/T, Western Union
Capacidad de la fuente: 100 toneladas por mes
Modelo NO.: |
Invar 36 |
sobredosis: |
0,20 mm mínimo |
peso: |
0.015 mm |
Longitud: |
0,20 mm mín. |
Forma: |
tubo de bobina; Tubo capilar Tubos sin costura |
Superficie: |
superficie brillante |
Muestra: |
pedido pequeño aceptado |
Modelo NO.: |
Invar 36 |
sobredosis: |
0,20 mm mínimo |
peso: |
0.015 mm |
Longitud: |
0,20 mm mín. |
Forma: |
tubo de bobina; Tubo capilar Tubos sin costura |
Superficie: |
superficie brillante |
Muestra: |
pedido pequeño aceptado |
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.
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 |
Coefficient of expansion
| θ/ºC | α1/10-6ºC-1 | θ/ºC | α1/10-6ºC-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 |
| The 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 |
|
| Precautions |
|
Typical Physical properties
| Density (g/cm3) | 8.1 |
| Electrical resistivity at 20ºC(OMmm2/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 |
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