Cold-Rolled Steel
Hardened & Tempered Steel
Nickel-Plated Steel
Outstanding Corrosion Resistance, Oxidation Resistance, and Advanced Surface Treatment

Nickel-Plated Steel

By proceeding with electroplating in the range of 1~6 micrometers thickness and then conducting diffusion heat treatment, this steel possesses excellent corrosion resistance (resistance against corrosion) and oxidation resistance (prevention of oxidation when in contact with oxygen), along with superior workability.

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Product Specifications
Product Application
Production Process

What is DiKel?

'D' stands for Dongkuk and also signifies Decarbonize.
DiKel, a compound word of 'D' and 'Nickel,' represents Dongkuk Industries' nickel-plated steel brand, which aims for decarbonization.

What is a Nickel-Plated Steel?

A Nickel-plated steel, known for their corrosion resistance, oxidation resistance, and workability, is used for wrapping cylindrical batteries.
The battery case made of nickel-plated steel protects the materials inside the cylindrical battery and enables electrical connections.

Why does Dongkuk Industries produce a Nickel-Plated Steel?

Over the past 50 years, Dongkuk Industries has grown into a specialty steel company with global competitiveness, actively engaging in environmental protection efforts such as installing solar power plants, establishing and adhering to environmental policies, and aggressively introducing carbon reduction facilities. The demand for environmental protection is increasing worldwide, naturally triggering changes in the production methods of major industrial markets. In response, Dongkuk Industries has newly introduced the 'Nickel-Plated Steel ' business, a material for cylindrical batteries used in eco-friendly electric vehicles, to contribute to the global agenda of 'sustainable development goals' and 'environmental protection.'

Internal Combustion Engine Cars

Electric Vehicles (EV)

Furthermore, the global electric vehicle (EV) market is rapidly growing due to rising gasoline prices and environmental issues. According to the International Energy Agency (IEA), electric cars' market share in the total automotive market grew from 4% in 2020 to 14% in 2022, and it is expected that by 2030, electric cars will account for more than 60% of the total automotive market share on average. A Nickel-plated steel plays a vital role in enhancing the stability of cylindrical batteries used in these electric vehicles.

Curious about Cylindrical Batteries Wrapped in a Nickel-Plated Steel?

Cylindrical batteries are one type of electric vehicle battery, with the main types being cylindrical, pouch, and prismatic batteries. Check out the purposes and characteristics of each battery type

Name Cylindrical Battery Pouch Battery Prismatic Battery
Material Nickel-Plated Steel Film Aluminum
Main Uses Electric vehicles, power tools, wireless vacuums, etc. Electric vehicles, mobile phones, etc Electric vehicles, mobile phones, etc
Advantages Affordable price
Excellent durability
Ease of mass production
High fire safety
High energy density
Flexible design
Strong against impact
Ease of mass production
Automotive Companies Using Them Tesla, Lucid, Rivian, GM, Volvo Hyundai, Kia, GM, Ford, Renault, Volvo BMW, Mercedes, Audi, Volkswagen

How is a Cylindrical Battery for Electric Vehicles Constructed?

A single cylindrical battery wrapped in a nickel-plated steel is called a Cell. When Cells come together, they form a Module, which combines to create the Battery Pack used in electric vehicles. The number of Cells and Modules varies depending on the type of vehicle.

Is Dongkuk Industries' DiKel Only Used in Electric Vehicles?

DiKel, known for its excellent corrosion resistance and durability, is used in cylindrical battery cases.
These robust batteries are crucially utilized in environments requiring high stability.
They are also used in electric vehicles and personal mobility devices such as electric bicycles, scooters, and power tools. Dongkuk Industries' DiKel will enhance your daily safety.

Electric Vehicle Batteries

Personal Mobility

Power Tool Batteries



Thickness Width
0.2 ~ 1.0 25 ~ 1,219
C Si Mn P S
Max. 0.08 Max. 0.03 Max. 0.40 Max. 0.02 Max. 0.03
T. S (Mpa) Y.P (Mpa) Elongation (%)
Max. 430 Max. 370 Min. 25

Nickel Plating Line

Category Remarks
Input Thicknes (mm) 0.2 ~ 1.0
Input Width (mm) 750 ~ 1,219
Capa. (Ton/年) 80,000 (130,000)

Slitting Line

Category Remarks
Input Thicknes (mm) 0.2 ~ 1.0
Input Width (mm) 750 ~ 1,219
Output Width (mm) Min. 25 and above
Capa. (Ton/年) 130,000

Annealing Line

Category Atmosphere Gas Input Thicknes (mm) Input Width (mm) Capa. (Ton/年) Remarks
Batch H 100% - 150 ~ 1,320 -
Continuous* H, N Mix 0.2 ~ 1.0 750 ~ 1,219 80,000 (130,000)

* Continuous


(4Hi 1Stand CAL inline)

Input Thicknes (mm) Input Width (mm) capa. (Ton/年)
0.2 ~ 1.0 750 ~ 1,219 130,000

Product Application

A Nickel-plated steel, known for their exceptional corrosion resistance and durability, is used in manufacturing battery cases for electric vehicles, personal mobility devices, ESS, and power tools used in environments requiring high safety.

Electric Vehicle Batteries

Personal Mobility

Power Tool Batteries