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Invar 36 Nickel Iron Alloy Tubes with High Dimensional Stability and Corrosion Resistance for Precision Instruments

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

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Especificaciones
Resaltar:

Invar 36 nickel iron alloy tubes

,

Invar36 pipes for green buildings

,

precision alloy Invar 36 tubes

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
Descripción
Invar 36 Nickel Iron Alloy Tubes with High Dimensional Stability and Corrosion Resistance for Precision Instruments

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
  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 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

 

 

Invar 36 Nickel Iron Alloy Tubes with High Dimensional Stability and Corrosion Resistance for Precision Instruments 0

 

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