Pure nickel (such as Ni200, Ni201) has the following main characteristics:
Excellent corrosion resistance: It has excellent corrosion resistance in acid, alkali and salt environments, and is particularly suitable for the chemical industry.
Good conductivity: Pure nickel has excellent conductivity and is widely used in the electronics, battery and electrical industries.
High temperature stability: It can maintain strength in high temperature environments and is suitable for high temperature heating elements and high temperature alloy substrates.
Good ductility: It is easy to process and weld, and can be used for the manufacture of parts with complex shapes.

Common pure nickel grades include:
Grade Nickel content (%) Features Typical applications
Ni200 ≥99.6% Low carbon, high conductivity, strong corrosion resistance Batteries, electrodes, electrical components
Ni201 ≥99.6% Low carbon version, suitable for high temperature environment Chemical equipment, electronic components

Due to its excellent properties, pure nickel is widely used in many industries, including:
Electronics and electrical: battery connectors, resistor materials, electrode materials, and electronic tube components.
Chemical industry: corrosion-resistant pipes, storage tanks, heat exchangers, and electrolytic cell anodes.
Aerospace: high-temperature structural materials, engine parts, and heat exchange systems.
Medical industry: good biocompatibility, can be used in medical equipment, electrodes, and implant materials.
Automobile manufacturing: hydrogen fuel cells, sensor materials, and electric vehicle battery connectors.

Pure nickel will form a nickel oxide (NiO) layer in high temperature air, which affects conductivity and welding performance.
Prevention methods:
Store in a dry environment and avoid moisture or strong acid and alkali environments.
When processing or welding at high temperatures, inert gas (such as argon) can be used for protection to reduce oxidation.
Surface treatment, such as tin plating and silver plating, improves oxidation resistance.

Pure nickel has good processing performance and can be processed in a variety of ways:
Drawing: It can be made into fine wires for battery tabs and electric heating wires.
Stamping: It can be used to manufacture precision parts such as electrode sheets and electronic components.
Cutting: Laser cutting, plasma cutting or water jet cutting can be used, suitable for materials of different thicknesses.

Properties Pure nickel wire (Ni200, Ni201) Nickel-chromium wire (NiCr 80/20, 60/15)
Nickel content ≥99% 80% or 60%
Corrosion resistance High High
Resistivity Low (for conduction) High (for resistance heating)
Heat resistance High, but not as high as NiCr More resistant to high temperatures (above 1200°C)
Main uses Batteries, electrodes, electrical connections Resistance heating elements (such as electric furnaces, electric soldering irons)

Pure nickel usually complies with RoHS (Restriction of Hazardous Substances Directive) and REACH (Chemical Safety Regulation).
In industries with special requirements (such as medical and aviation), it is necessary to comply with ISO 10993 (biocompatibility), NADCAP (aerospace certification) and other standards.

Common international quality standards include:
ASTM B160 (pure nickel rods and wires)
ASTM B162 (pure nickel plates and strips)
ISO 9723 (nickel wire standard)
GB/T 2054 (Chinese pure nickel wire standard)v DIN 17753 (German standard)
Testing contents generally include:
Chemical composition analysis (spectral analysis, ICP analysis)
Mechanical property test (tensile strength, yield strength, elongation)
Resistivity test (for batteries, electric heating applications)
Metallographic analysis (checking grain size, inclusions)