Shanghai Tankii Alloy Material Co., Ltd.

NAIA Member(Expired)

Main features: high heat sensitive properties and high resistivity, but lower elastic modulus and allowed stress, can increase the sensitivity of the instrument, smaller size and increase the reaction.

Chemical composition

The basic characteristic of the thermal bimetal is changing with temperature and temperature deformation, resulting in a certain moment.Many devices use this feature to convert heat energy into mechanical work to achieve automatic control.Thermal bimetal used for control system and temperature sensor in the measuring instrument.

Chemical composition

A bimetallic strip is used to convert a temperature change into mechanical displacement. The strip consists of two strips of different metals which expand at different rates as they are heated, usually steel and copper, or in some cases steel and brass. The strips are joined together throughout their length by riveting, brazing or welding. The different expansions force the flat strip to bend one way if heated, and in the opposite direction if cooled below its initial temperature. The metal with the higher coefficient of thermal expansion is on the outer side of the curve when the strip is heated and on the inner side when cooled.

The sideways displacement of the strip is much larger than the small lengthways expansion in either of the two metals. This effect is used in a range of mechanical and electrical devices. In some applications the bimetal strip is used in the flat form. In others, it is wrapped into a coil for compactness. The greater length of the coiled version gives improved sensitivity.

Description:
Chemical composition(%)

Brand: 1J50
Classification: Alloys of precision soft magnetic
Supplement: alloy has a high permeability and low saturation induction of technical
Application: For cores between the tube and small power transformers, chokes, relays and parts of magnetic circuits operating at elevated inductions without bias or small bias

Chemical Composition in % 1J50

Here you can buy Alloy 1J50 (tape) on better terms.

Technical properties

Alloy 1J50 with high magnetic permeability, having the highest value of the saturation induction of the entire group of iron-nickel alloy, not less than 1.5 T. Alloy crystallographic texture and with a rectangular hysteresis loop

Basic physical constants and mechanical properties of the alloy:

Density: γ = 8,2 g / cm3;
Electric resistivity: ρ = 0,45 ohm mm2 ? / m;
Curie Point Temperature: Θs = 500 ° C;
Saturation magnetostriction: λS = 25 ? 106;
Brinell Hardness: 170/130 HB;
Ultimate: Rm = 780/440 MPa;
Yield strength: σ0,2 = 685/145 MPa;
Modulus of elasticity E = 160 kN / mm2;
Elongation: δ5 = 3/35%;
Relative compression: φ = 15/60%.

Soft magnetic alloys mainly used  in two areas for energy conversion and information processing.

In the power industry, mainly in the high magnetic field has a high magnetic induction and low core loss of the alloy. In the electronics industry, mainly at low or medium alloy having a high magnetic permeability and low coercive force. At high frequencies shall be made on a thin strip or alloy higher resistivity. Usually with sheet or strip.

Be use in exchange , due to the alternating magnetic eddy currents are induced inside the material, resulting in the loss, the smaller the resistance of the alloy, the greater the thickness, the higher the frequency of the alternating magnetic field, eddy current losses greater, magnetic reduce more. For this, the material must be made thinner sheet (tape), and the surface coated with an insulating layer, or the use of certain methods to the surface to form an oxide insulating layer, such alloys commonly used magnesium oxide electrophoresis coating.


In order to prevent interference of external magnetic fields, often in the oscilloscope tube, the picture tube electron beam focusing section plus the external magnetic shield, the magnetic shield can play a role.

The following is the data permalloy:

Mainly used  in two areas for energy conversion and information processing

In the power industry, mainly in the high magnetic field has a high magnetic induction and low core loss of the alloy. In the electronics industry, mainly at low or medium alloy having a high magnetic permeability and low coercive force. At high frequencies shall be made on a thin strip or alloy higher resistivity. Usually with sheet or strip.

Soft magnetic materials in exchange for use, due to the alternating magnetic eddy currents are induced inside the material, resulting in the loss, the smaller the resistance of the alloy, the greater the thickness, the higher the frequency of the alternating magnetic field, eddy current losses greater, magnetic reduce more. For this, the material must be made thinner sheet (tape), and the surface coated with an insulating layer, or the use of certain methods to the surface to form an oxide insulating layer, such alloys commonly used magnesium oxide electrophoresis coating.

Iron-nickel alloy mostly in the alternating magnetic field use, mainly for yoke iron, relay, Small Power Transformers and Magnetically shielded.

Permalloy magnetic shielding to do: In order to prevent interference of external magnetic field, often in CRT, an external CRT electron beam focusing section plus the magnetic shield, you can play the role of magnetic shielding.

Chemical composition

Heat treatment system

1 j22 is high saturation magnetic induction intensity of iron, cobalt, vanadium soft magnetic alloy in existing soft magnetic alloy calcium alloy has the highest saturated magnetic induction intensity (2.4 T), and high Curie temperature (980 ºC), saturation magnetostriction coefficient of maximum (60 ~ 100 * 10-6).Due to the high saturation magnetic induction intensity, when making an equal power of motor, can greatly reduce the volume, when making electromagnet, under the same cross-sectional area can produce larger suction force.Due to their high Curie point, can make the alloy can be in other soft magnetic alloy material has been completely demagnetization work under the high temperature, and maintain good magnetic stability.Due to the large magnetostrictive coefficient, and is suitable for used as a magnetostrictive transducer, output energy is high, the efficiency is high.The resistivity of low alloy (0.27 mu Ω m.), is not suitable for use under high frequency.Price is more expensive, easily oxidized, processing performance is poor, adding suitable nickel or other elements, can improve the processing performance.

Application: suitable for making quality is light, small volume of aviation and space flight with electrical components, such as, micro-motor rotor magnet pole head, relays, transducers, etc.

Chemical composition

Chemical properties

Grade: Ni-Span C, Ni-Span C902, Elinvar Extra, 3J53

3j53 / Ni42CrTi belongs to Fe - Ni - Cr - Ti is ferromagnetic precipitation strengthening constant elastic alloy.
After solid solution treatment, plasticity is good, hardness is low, easy to processing molding.
Solid solution or after the cold strain aging treatment, reinforcement and good constant elastic properties.

Ni42CrTi alloy with small temperature coefficient, high mechanical quality factor, good wave velocity uniformity, high strength and modulus of elasticity and smaller elastic aftereffect and lag, low linear expansion coefficient, good processing properties and good corrosion resistance and other excellent properties.

Ni42CrTi alloy is more used for elastic sensitive element

Chemical composition %

Style of supply

Relative Grade:
29H Kovar Nilo K KV-1 Dilver P0 Vacon 1229H-B Rodar Telcaseal KV-2 Dilver P1 Silvar 48

Specification: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube 

products description  4J29 bar 

General Description
Kovar is a nominal 29%Ni-17%Co-54%Fe alloy that is a well-known glass-sealing alloy suitable for sealing to hard glasses. Kovar has a nominal expansion coefficient of approximately 5 ppm/°C and inflection temperature of ~450 °C (840 °F).
Kovar (ASTM F15) has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.

Chemical Composition

4J31, A low expansion alloy consisting of 32% Nickel, 4% Cobalt, and balance Iron. Super Invar Alloy exhibits minimum thermal expansion at room temperatures (one half of Invar Alloy), as well as thermal expansion properties less than that of Invar Alloy in the 67/203°F (-55/95°C) temperature range. The minimal expansion of Super Invar over this range of temperatures, makes this alloy useful in many applications including structural components and substrates in instrument systems requiring precision measurements.

4J32 alloy is also called Super-Invar alloy. In the temperature range of -60 to 80 °C, the expansion coefficient is lower than that of 4J36 alloy, but the low temperature structure stability is worse than that of 4J36 alloy. This alloy is primarily used in the manufacture of high precision instrument parts that require dimensional dimensions within the range of ambient temperature variations.

32H Invar Invar Invar Standard Vacodil36 32H-B Nilvar Nilo36 Cactus LE Fe-Ni36 Nilos36 - Unipsan 36 36Ni

General Description

Invar 36, also known as FeNi36, is iron-nickel alloys have low coefficients of expansion over only a rather narrow range of temperature. It has a low coefficient of expansion from cryogenic temperatures to about 260ºC. In the dry air at home temperature, invar 36 has good resistance to corrosion. But in moist air, it may go corrosion.
Invar 36 is suitable for the applications who require low coefficient of expansion, such as production, storage and transportation of liquid gas, temperature regulation devices working below 200ºC, aperture mask, unit frameworks working below -200ºC and so on.

Normal composition%

Typical Physical properties

4J 42 is a 41% nickel-iron controlled expansion alloy which has been used in a wide variety of glass-to-metal sealing applications.While the expansion properties of this alloy most closely match 1075 glass, it has also been used in seals for the 0120 and 0010 glasses. It may also be used with hard glasses if a thin edged tubular seal is used. For seals that are not hydrogen annealed prior to sealing, a variation of this alloy containing small additions fo titanium, Glass Sealing 42 Gas-Free, has been used to promote gas-free sealing characteristics.

Alloy 42 has been used for the glass-to-metal seals in electronic tubes, automotive and industrial lamps, transformer and capacitor bushings and other glass-to-metal and ceramic-to-metal applications

Relative Grade:
4J50 FeNi50 Nilo51 NS-1 N50 Vacovit 500

Specification: Sheet/Plate, Bar/Rod/Wire/Coil,Capillary/Pipe/Tube 

Precision alloy 4J50 is a Fe-Ni constant expansion alloy, which obtains matchable expansion coefficient with different soft glass and ceramic in given temperature range by adjusting the nickel content, and the expansion coefficient and Curie point are increased with the nickel content increase. 4J50 alloy is a widely used sealing material in electric vacuum industry

Size Range: 

*Sheet---Thickness 0.1mm~40.0mm, width:≤300mm,Condition: cold rolled(hot), bright, bright annealed 

*Round Wire---Dia 0.1mm~Dia 5.0mm,Condition: cold drawn, bright, bright annealed 

*Flat Wire---Dia 0.5mm~Dia 5.0mm,length:≤1000mm,Condition:flat rolled, bright annealed 

*Bar---Dia 5.0mm~Dia 8.0mm,length:≤2000mm,Condition:cold drawn,bright, bright annealed 

Dia 8.0mm~Dia 32.0mm,length:≤2500mm,Condition:hot rolled,bright, bright annealed 

Dia 32.0mm~Dia 180.0mm,length:≤1300mm,Condition:hot forging,peeled, turned, hot treated 

*Capillary---OD 8.0mm~1.0mm,ID 0.1mm~8.0mm,length:≤2500mm,Condition: cold drawn, bright, bright annealed 

*Pipe---OD 120mm~8.0mm,ID 8.0mm~129mm,length:≤4000mm,Condition: cold drawn, bright, bright annealed