Cold-Rolled Steel: Pinnacle of steel
Strong yet smooth steel, enhancing everyday convenience
Cold Rolled Steel requires the most delicate technology and high-quality processing among steel products. Hyundai Steel’s Cold Rolled Steel Plate can boast high strength and excellent surface quality, used in various fields such as automobiles, appliances, and building materials. Cold rolled products are processed at room temperature to produce thin, highly durable steel sheets that maximize corrosion resistance and workability, resulting in high added value. Through the advanced facilities of the Dangjin Steelworks and the Suncheon Plant, which produce more than 6 million tons of Cold Rolled Steel annually, we are leading the development of ultra-high-strength steel plate in response to the automotive industry’s demand for lightweight materials, contributing to the production of lightweight and strong vehicles. Hyundai Steel is securing competitiveness in the global market with high-quality Cold Rolled Steel tailored to customer demands.
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6 million tons
per year -
Global cold rolled
production capacity
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6 million tons
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5th in
the world -
Automotive steel plate
production capacity
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5th in
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Low carbon
product certification - The first in the domestic steel industry to obtain EPD certification in Korea, the US, and Europe
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Low carbon
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- Advanced production systems and
innovative processes - Establishment of state-of-the-art equipment and continuous investment, performance enhancement through new methods, and development of 3rd generation steel
- Advanced production systems and
Key products
Pickling & Oiling Coil
Pickling & Oiling Coil is a product that has had its surface contaminants and iron oxide removed using hydrochloric acid, followed by an oil treatment to prevent oxidation. It is mainly used as material for automobiles, construction materials, and pipes.
Key specifications
| Hyundai Steel | SPHC, SAPH400, SPFH590 |
|---|---|
| JIS | SPHC, SPHD, SPHE |
| ASTM | ASTM A1011 |
| EN | DD11, DD13, S355MC, S420MC |
Hot Rolled Galvanized Coil (HGI)
This product has undergone a pickling process to remove scales from the surface and is then galvanized to ensure corrosion resistance. The color is silver, and it is utilized in applications such as road guardrails and corrugated steel pipes.
Key specifications
| Hyundai Steel | SGHC, SGH400, SGH590FB |
|---|---|
| ASTM | ASTM A653 |
| EN | DD11, DD13, S355MC, S550MC |
Hot Rolled Galvannealed Coil (HGA)
This product undergoes zinc galvanization and heat treatment after the pickling process, resulting in excellent weldability and paint adhesion. The surface has a black hue and is mainly supplied for automotive inner panels and chassis components.
Key specifications
| Hyundai Steel | SGAHC, SGAPH440, SGAFH590FB |
|---|---|
| JIS | SGHC, SGH440 |
| ASTM | ASTM A653 |
Cold Rolled Coil
Cold Rolled Coil (CR) is a product that has achieved good workability and a smooth surface through pickling, cold rolling, and heat treatment processes. The biggest difference compared to hot rolled products is that it lacks an oxide layer on the surface, and it is used in various applications such as appliances, welding rods, and automotive inner and outer panels.
Key specifications
| Hyundai Steel | SPCC, SPCEN, SPRC340, SPFC590DP |
|---|---|
| JIS | SPCC, SPFC340, SPFC780Y |
| ASTM | ASTM A1008 |
| EN | DC01, HX220YD, HC340LA, HCT590X |
Galvannealed Coil (GA)
This is a coated coil where cold rolled coil is galvanized, followed by heat treatment to alloy iron and zinc. It has excellent weldability and workability, making it primarily used for automotive exterior panels and interior components, and it features high resistance to surface scratches, allowing for various applications.
Key specifications
| Hyundai Steel | SGACC, SGACUD, SGARC340, SGAFC590DP |
|---|---|
| JIS | SGCC, SGACD, SGC340 |
| ASTM | ASTM A653 |
Galvanized Coil (GI)
This product is cold rolled coil with a hot rolled galvanized surface, offering excellent corrosion resistance. Unlike GA, it does not undergo the alloying process, giving it a bright and uniform surface gloss. It is mainly used for the interior and exterior materials of appliances, building materials, and automotive interior components.
Key specifications
| Hyundai Steel | SGCC, SGCD, SGCUD |
|---|---|
| ASTM | ASTM A653 |
| EN | DX51D+Z, HX340LAD+Z, HX590X+Z |
Electro-Galvanized Coil
Electro-Galvanized Coil (EG) is a product where zinc is applied to cold rolled coil through electro-galvanization, offering excellent corrosion resistance and workability. It is mainly used as a material for appliances such as televisions, refrigerators and washing machines.
Key specifications
| Hyundai Steel | SECC, SECEN, SEFC340 |
|---|---|
| JIS | SECC, SECE, SEFC440 |
| EN | DC01+ZE, DC03+ZE |
Aluminum-Silicon Coated Coil
Aluminum-Silicon Coated Coil (ALS) is a product where aluminum is coated on the surface of cold rolled coil, offering superior heat resistance compared to galvanized coil and cold rolled coil. Afterwards, it is supplied as material for hot stamping, widely used for lightweight products in the automotive sector.
Key specifications
| Hyundai Steel | SACC, SACD, SABC980, SABC1470 |
|---|---|
| JIS | SA1C, SA1D, SA1E |
| EN | DX51D+AS, DX53D+AS |
Application areas
Hyundai Steel’s cold rolled products offer lightweight and corrosion-resistant solutions that meet customer requirements with excellent surface quality and high processability in various industries. Our products serve as key materials in sectors such as automotive and appliances, maximizing product durability and performance while contributing to the efficiency of manufacturing processes.
Automotive sector
- Lighter and more durable
- Applied to the exterior panels, frames, and structures of vehicles, providing lightweight design and high durability. With excellent formability and superior surface quality, it ensures vehicle design and stability, while enhanced corrosion resistance extends the vehicle's lifespan and increases safety.
SGACUD-E, SGARC340BH-E,SGAFC1180Y, SGAFC980Y, SPFC1470Y, SPFC1180Y, SPCC-DF, SPFH980-P, SABC1470, SABC1760
Hyundai Steel H-SolutionAppliance sector
- Excellent corrosion resistance and high-quality finish
- Applied to the exterior materials and internal components of appliance, it provides durability and a high-quality finish. It is resistant to corrosion and meets both design and performance requirements with its beautiful surface treatment. It enhances the performance of various appliances while maintaining the luxury and durability of the product.
SECC, SGCC, SGCD, SGC295Y
Manufacturing process
Cold Rolled Steel manufacturing process
The manufacturing process involves cold rolling the Hot Rolled Steel at room temperature to achieve the desired thickness.
First, the Hot Rolled Steel Plates are pickled to remove surface oxides, and then cold rolling is performed to produce thin and uniform steel sheets.
Afterwards, the material undergoes a heat treatment (annealing) process to adjust its strength, and if necessary, surface coating (such as zinc or aluminum)
is applied to enhance corrosion resistance and workability. Through this process, Cold Rolled Steel Plates are completed as products with high surface quality
and precise thickness, suitable for use in various industries.
Hynndai Steel's intergrated steelworks manufacture hot-rolled and cold-rolled coils, heavy plates, pipes, and lightweight automotive parts out of iron ore and coal. By melting lumps of raw materials, molten metal is generated in blast furnaces, after which it is purified in the steelmaking process and then goes on to the continuous casting process to make slabs that can also be hardened half-finished products. Those of slabs are thoroughly rolled at a high temperature (above 1,100℃) in order to make hot-rolled coils. After that, the cold-rolled coils are made by rolling the HRC (hot-rolled coils) at room temperature to process for final usage, which is mainly for lightweight automotive parts.
- 항만
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- 1.선형저장고
- 2.원형저장고
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- 1.코크스공장
- 2.소결공장
- 고로
- 토페도카
- 용선예비처리기
- 전로
- 정련기
- 연속주조기
- 가열로
- 압연기
- 냉각기
- 산세공정
- 압연공정
- 열처리공정
- 도금공정
Hyundai Steel’s electric arc furnace uses steel scrap to manufacture sections, reinforcing bars, and railway rails that are used for buildings, bridges and railways. After melting the steel scrap to make molten metal, it is then smelted to eliminate impurities before proceeding to the continuous casting process to manufacture halffinished products, such as blooms and billets. These half-finished products can be rolled by reheating to increase their size as finished products, such as sections and reinforcing bars, in various sizes and thickness.
- 철스크랩
- 전기로
- 정련기
- 연속주조기
- 가열로
- 압연기
