Ni(Atomic number : 28)

1. Introduce

– A silvery-white metal with good strength and luster

– Reacts very slowly with oxygen, water, dilute acids and alkalis at room temperature and is considered a corrosion-resistant metal

– Due to its excellent corrosion resistance properties, it is mostly used in the manufacture of stainless steel and is used for plating by forming an oxide protective film in air

– Ni alloy elemental effects: increased high temperature strength, oxidation resistance, resistance to nitriding and carburizing

* Ni Alloy

1) Ni-Cr alloy

– Type : Inconel, Nichrome

(1) Inconel : Has excellent high temperature strength, oxidation resistance, used in aerospace, turbine blades, nuclear reactors, etc.

(2) Nichrome : Excellent high temperature resistance, used in electric heating wire, electric heater, etc.

2) Ni-Fe alloy

– Type : Invar, Permalloy

(1) Invar : Very low coefficient of thermal expansion, used for precision instruments, measuring equipment, etc.

(2) Permalloy : Used in electronic devices, transformer cores, etc. due to its excellent permeability

3) Ni-Cu alloy

– Type : Monel

(1) Monel : Excellent corrosion resistance and strength, used in marine environments, chemical processing equipment, etc.

4) Ni-Mo alloy

– Type : Hastelloy

(1) Hastelloy : Excellent corrosion resistance, used in chemical processing, marine environment, high temperature gas environment, etc.

2. Property

– High temperature corrosion resistance, oxidation resistance, high temperature strength, corrosion resistance, resistance to thermal creep deformation, weldability, good low temperature ductility

[Ni Mechanical Properties]

[Ni Physical Properties]

3. Application

– Metal alloys (stainless steel), coins, precious metals, batteries

(1) Metal alloys / (2) Coins / (3) Batteries