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Precision alloys are metal materials with special physical properties (such as magnetism, electricity, expansion, resistivity, etc.). Precision alloys play an indispensable role and can be used in industry such as electronic and electrical, consumer electronics, precision instruments, communication, sealing, sensor, aviation, energy power and others.
Typical products include soft magnetic alloys (1J21, 1J22, 1J27, 1J50, 1J79, 1J85), half-soft magnetic alloys (2J4, 2J85), elastic alloys (3J21, 3J33, 3J53), expansion alloys (4J29, 4J36, 4J42, 4J50), electric-resistance alloys (6J22, 6J23) etc.
The product form include strip, plate, bar, wire, ring, etc. The minimum thickness of strip is 0.005mm, the maximum width is 450mm, and the tolerance can reach ±0.5μm.
Features are as below:
? ?Excellent physical properties;
? ?Accurate chemical composition, low inclusion, high purity;
? ?High dimensional accuracy, good shape and flatness, excellent surface quality;
? ?The weight of strip can reach up to 2800kg.
Typical applications are as below:
? ?Electronic and electrical products: inductor core, choke core, sensor,? transformer, solenoid valve and magnetic shield, spring etc.;
? ?Consumer electronics: screen and shield for mobile consumer products, connectors for electronic devices and wireless headsets, components for 5G base station, etc.;
? ?Automatic control: signal amplifier, sensor, switch;
? ?Precision instrument: pressure sensitive diaphragm;
? ?Communication: optical fiber connector, cable shield.
Precision Alloys Typical Products |
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| Alloy Type | Brand | Equivalent Brand | Cold Strip | Cold Wire | Rolled Bar |
| Soft magnetic alloys | 1J21 | Hiperco 50 | √ | ||
| 1J27 | Hiperco 27 | √ | |||
| 1J22 | Hiperco 50 | √ | √ | ||
| 1J50 | √ | √ | |||
| 1J51 | √ | ||||
| 1J79 | Permalloy | √ | √ | √ | |
| 1J85 | Super-permalloy | √ | √ | √ | |
| 1J116 | √ | ||||
| 1J117 | √ | ||||
| Half-soft? magnetic alloy | 2J4 | √ | |||
| 2J85 | √ | √ | √ | ||
| Elastic alloys | 3J1? | √ | √ | ||
| 3J9 | √ | √ | √ | ||
| 3J21 | √ | √ | |||
| 3J33 | √ | √ | |||
| 3J53 | √ | ||||
| 3J78 | √ | √ | √ | ||
| Expansion alloys | 4J29 | ?Covar | √ | √ | √ |
| 4J33 | √ | √ | |||
| 4J36 | ?Invar | √ | √ | √ | |
| 4J42 | √ | √ | √ | ||
| 4J50 | √ | √ | √ | ||
| Resistance? alloys | 6J10 | √ | √ | ||
| 6J12 | √ | ||||
| 6J20 | √ | √ | √ | ||
| 6J22 | ?Karma | √ | |||
| 6J23 | ?Evanohm | √ | |||
| 6J40 | ?Constantan | √ | |||
| High resistance alloys for electrical heating | Cr20Ni80 | √ | |||
| Cr20Ni35 | √ | ||||
| Cr20Ni30 | √ | ||||
?Precision Alloys? Specification |
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| Prodect Type | Thickness/mm | Width/mm | Length/mm | Remark |
| Hot-rolled Plate | 6-100 | 100-400 | 100-3000 | |
| Hot-rolled Strip | 3-6 | 100-450 | 100-25000 | |
| Bar? | Φ10-Φ150 | — | 100-4000 | |
| Cold-rolled Plate? | 0.9-3.0 | 300-1000 | 100-3000 | |
| Cold-rolled Strip? | 0.1-2.0 | 200-450 | Coil | |
| Cold-rolled Thin Strip? | 0.03-0.1 | 200-450 | Coil | |
| Foil? | 0.005-0.03 | ≤100 | Coil | |
| Wire Rod? | Φ3-Φ10 | — | Coil | |
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