STS Division

STS Division started out as Samyang Metal Industries, which began stainless steel cold rolling in 1962.
It later became the SBS Division of Taihan Electric Wire Co., Ltd. When POSCO AST was launched in 2009,
it became part of the POSCO Family, the best steel company in Korea. It exclusively handles POSCO products,
and we will place the utmost priority on satisfying customers and create values based on customers’ trust.

Introduce STS Division..

Main uses of STS plates

To best meet customer needs, POSCO offers high quality, cold rolled stainless steel products that can be used for a wide range of applications, including kitchen appliances, electricity and electronics, transportation and construction.


Quality characteristics
Bendability and corrosion resistance are required, and particularly surface gloss and color management are important.
Tubs have recently been switching to 200-series steel grade.
Specifications 430JIL/439/430 [ 2B, BA : 05~0.6mm ]

Sink bowl

Quality characteristics
It has an excellent antibacterial effect and fouling resistance, and minimizes everyday scratches.
Specifications 304/304J1/PossFD [ 2B : 0.2 ~ 0.5mm ]

Kitchen utensils

Quality characteristics
It is mainly used for saucepans and frying pans.
It uses the advantage of STS, i.e. corrosion resistance, and the advantages of aluminum, i.e. thermal conductance and thermal efficiency.
STSS300 series - Al - STS400 series 3Ply Type
Specifications 304/304J1 [ 2B : 0.2 ~ 0.5mm ]

Western tableware

Quality characteristics
Representative steel grades, e.g. 420N1 and 420J2 Martensite are used.
Suitable for table knives and kitchen utensils, which require corrosion and wear resistance
It is necessary to manage surface defects, e.g. Buffing, Ridging and Orange Peel.
Specifications 420J2/304J1 [ 2B : 0.6 ~ 2.0mm ]


Quality characteristics
Stainless steel containing Cr, which has excellent corrosion resistance and formability, is used for various purposes.
Specifications 304 [HL, #8 : 0.8~2.0mm ]


Quality characteristics
As it has excellent strength, it does not rust, is sanitary, has a beautiful surface, and is robust against shock, making it ideal for use as the exterior of home appliances.
Specifications 445NF/430/430J1L [ #4 : 0.4 ~ 2.0mm ]

LNG carrier

Quality characteristics
When the liquefied natural gas is transported, it is 196℃ below zero, but it is 20-30℃ above zero after transportation. It is made of 304L steel grade that has excellent resistance to thermal contraction and expansion due to changes in temperature and excellent low temperature brittleness against Ni.
Specifications ASTM304L [ 2B : 1.2 ~ 2.0mm ]

Water storage tank lining

Quality characteristics
It is used for water supply facilities like desalination facilities, water storage tanks and drainage tanks.
As it contains a lot of corrosion-resistant reinforced elements, e.g. Cr, Mo and N, it is highly resistant to chlorine corrosion, pitting corrosion, crevice corrosion and erosion.
Specifications 304/444/329LD [ BB, 1D : 1.5 ~ 4.0mm ]


Quality characteristics
It is the most widely used construction material. The gloss, corrosion resistance, heat resistance and mechanical properties of stainless steel are ideal.
Specifications 304/439 [ 2B,HL,#4,#8,Embo : 0.6 ~ 1.5mm ]

Heat exchanger

Quality characteristics
It is low-carbon 304 grade with excellent resistance to intergranular corrosion.
It is used for the equipment of the chemical, coal and oil industry which requires resistance against intergranular corrosion, heat-resistant components, parts that are not easy to be heat-treated, water heaters and heat exchangers.
Specifications 304L/316L [ 2B : 0.4 ~ 1.0mm ]

Automotive exhaust system

Quality characteristics
430J1L: As Cu and Nb are added to 430 grade, it has excellent corrosion resistance, formability, weldability and high temperature oxidation resistance.
409L: As Ti is added, it has excellent weldability and processibility. So it is used in exhaust systems, heat exchangers and heat-resistant machines.
429EM: As Si, Ti, Mn and Cu are added, and C and N contents are reduced, it has excellent high-temperature strength and oxidation resistance.
436L: As Mo, Ti and Nb are added, it has excellent corrosion resistance, processibility, and weldability, and is used for water heaters and home appliances.