Your Trusted Precision Alloys Manufacturer in China
Precision alloys always used for some applications that need high strength such as magnetic response thermal expansion or electrical stability. SparkX provides precision alloys for sensor, relays, hermetic packages, lead frames, precision springs and resistors. Whether you need bars, wires, strips and sheets we can supply all them and TÜV EN 10204 3.1 traceability. SparkX has 40+ experiences of special steels and complete ISO IATF and environmental system so if you require any precision alloys please free to contact us.
Related Grades of Precision Alloys
If you have any other needs or require customization, please feel free to contact us.

High permeability soft magnetic nickel iron alloy, suitable for magnetic shielding and sensor cores, low coercivity and low hysteresis loss.

50Ni permalloy, its balanced permeability and saturation, ideal choice for relay armatures, small transformers and precision magnetic parts.

Precision elastic alloy, suitable for springs and diaphragms, has high strength, stable modulus and excellent fatigue resistance, ideal for instrumentation.

Kova alloys, controlled expansion, commonly used for glass and ceramics, achieving reliable glass and metal hermetic seals in electronic packaging and feedthroughs.

Invar alloy 36, very low thermal expansion, can maintain dimensional stability, and suitable for precision fixtures, metrology, and cryogenic equipment.

Precision resistance alloy with stable resistivity and low temperature coefficient, commonly used in shunt resistors, standard part and sensors.

High strength elastic alloy, suitable for thin strip and filaments, has stable resilience and fatigue life in precision mechanisms.

42NiFe controlled expansion alloy is very suitable for glass sealing, has good weldability and strength, can be used in lead frames and feedthroughs.
Precision Alloy Component Solutions
As you know precision alloys are often the functional core in an assembly. If you need SparkX can machine bars into sensor sleeves and fixtures draw wire into springs and formed parts. We can both cut strip to lead frames and seals, and use sheet for cutting and forming. SparkX provides the suitable form for your each application and maintaining stable chemical composition and performance. Our professional team will communicate with various levels of your company to gain a comprehensive understanding of your needs and provide the best solutions.


Cleanliness Control of Precision Alloys
As you know precision alloys are very sensitive even a minor changes in chemical composition and inclusions, so the cleanliness is always the key point of ensuring stable production. SparkX uses defined melting and refining routes to reduce gas absorption and non-metallic inclusions, and to lock in process parameters by recording and retaining samples from each furnace batch. It’s very important for soft magnetic alloys, controlled expansion and electrical resistance alloys because even a small variation in composition can also affect magnetic permeability, thermal expansion coefficient or resistivity. For your project, SparkX can integrates target chemical composition ranges, mechanical and electrical performance testing, and delivery conditions into a single solution, ensuring consistent performance across different batches for your stamping, drawing, or machining production lines.
Packaging and Project Supply
For your project the dimensional accuracy and functional performance are both important of precision alloy. SparkX can adjust precision alloys standards according to your key requirements such as magnetic consistency, expansion control or electrical stability even the dimensional tolerances and surface condition. Each batch of our products with traceability and TÜV-certified EN 10204 3.1. The packaging is designed for long distance export and use protective packaging and secure strapping to ensure the steel bars remain straight and the wire runs smoothly during unwinding, stamping or processing on your production line.

We have ISO 9001, IATF 16949, ISO 14001, ISO 45001 and ISO 50001.
Price typically depends on the alloy type, the smelting process and the required level of performance control. If you need more stricter magnetic properties or thermal expansion coefficients, special annealing processes and narrow tolerance ranges these will definitely increase costs than basic dimensions.
Of course we can. SparkX can support project that start with bars, wire and extend to strip and sheets. So your machining forming stamping and assembly all use a consistent grade strategy.
If you need high permeability for magnetic circuits and shielding in sensor and instruments you should choose 1J79.1J50 is often used for relays solenoids and magnetic components that require stable magnetic performance.4J29 is good choice for glass to metal sealing and hermetic electronic packaging.If you need it use for some highly sensitive to dimensional stability such as precision frames, fixtures, measuring instruments and other metrology parts. 4J42 is always used to match expansion for electronic packaging and lead frame style components. 3J21, 3J09 and 3J9 are used to diaphragms springs and precision elastic elements for repeatable elastic response. If you require high resistivity stability such as use in precision resistors and shunt element then 6J22 is your best choice.



