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32

Creating Another Success Storyin Vietnam

Vision1945~1969

Growth1982~1992

Development1970~1981

Success1993~2009

its early years of Establishment

the construction of Gwangyang Works

the construction of Pohang Works

entering theGlobal Market

the global arena

GlobalPOSCO

Since its establishment over 40 years ago.POSCO has risen to the top of the global steel industry.

Its contributions to Korea’s economic development, and its leading position in the global steel industry, display POSCO’s desize to set an example for companies around the world.

Development of POSCO

Established 1968. 4. 1.

POSCO

54

Creating Another Success Story in Vietnam

POSCO STAINLESS STEELPOSCO’s stainless steel products are manufactured by the latestfacilities and technology.

Stainless steel, called the flower of steels, contains more than 12%of chromium and tends to be rustproof. Therefore, it is used asinterior and exterior materials for building, kitchenwares, industrialparts, automotive components, medical instruments and so forth.

POSCO has established integrated manufacturing system frommelting shop to hot & cold rolling process. POSCO produces 2.2million tons of stainless steel products annually.POSCO also pursues complete quality control and deliverymanagement, and strives to achieve customer satisfaction.

Crude stainless steel production

1990 2000 2006 2007 2008 2009

million tons

0.3

1.3

2.32.5

2.1 2.2

Mar 1989 : 1st Stage Start up (#1EAF)

Aug 1996 : 2nd Stage Start up (#2EAF, CR)

May 1998 : ZPSS (China) Start up

Apr 2003 : 3rd Stage Start up (#3EAF, TCM CR)

Jan 2005 : QPSS (China) start up

Oct 2006 : Starting Toll processing with TES

Nov 2006 : ZPSS Up stream start up (EAF&Hot Rolling)

Dec 2006 : Thainox Share Holder(15%)

Nov 2008 : SNNC Start up (Ni Refinery in Korea)

May 2009 : Continuous Cold Rolling Mill (TRM)

Jul 2009 : POSCT AST start up

Oct 2009 : POSCO VST start up

History of stainless steel division

Vietnam Works

Cold Rolling Mill(POSCO VST)

CR 85

(Unit : 000 tons)

Pohang Works

ZRM200

TRM400

AST150

3 ElectricArc Furnace

Crude STS 2,200

Hot Rolling Mill(2 Plants)

HR 2,050

Cold Rolling Mill(3 Plants)

CR 750

Plate(3 Plants)

Plate 60

China Works

1 ElectricArc Furnace

Crude STS 800

Hot Rolling Mill(1 Plant)

HR 750

Cold Rolling Mill(ZPSS/QPSS)

CR 540

POSCO VST

Chartered Capital : U$ 50 million (90% POSCO, 10% Taeyang STS)Established : Sep. 2007 (started as the company name of ASC) POSCO VST has taken over the equity ownership from ASC on Oct. 1 2009Area : Total 130.4 thousand m2, Factory 37.8 thousand m2

Outlook

Location

HW 20

HW 1

HW 56HW 51

POSCO Vietnam

POSCO VST

POSCO VHPC

HW 1

HW 13My Phuoc

Tay Bac Cu ChiViet Huong

Tan Dong HiepA, B

BinhChieu

BinhDuong

DongAn

Viet-Sing

Tan ThoiHiep

Vinh Loc

Le Minh XuanHo Chi Minh

City

Tan Binh

Tan Tao

Hiep Phuoc

Dong Xuyen

Phu My

Long Khanh

My XuanA, MR, A2

My XuanB1

Cai Mep

An phuoc IIAn phuoc I

Bien Hoa

Amata

LOTECO

Song May

Ho Nao

Go DauNhon Trach

I, II, III

Linh Trung1,2 EPZ

Cat LaiII, IV

Tan ThuanEPZ

Ho Chi Minh City

POSCO Stainless Steel

76


MANUFACTURING PROCESS

STS manufacturing process of POSCO

STS manufacturing process of POSCO VST

Coil

Skelp

Sheet

HotRolled

ColdRolled

Plate

ScrapNickel

ChromeAlloys

ElectroArc Furnace

AODVOD

ContinuousCastingMachine

ReheatingFurnace

Cold Rolling Mill

ReheatingFurnace

Hot Rolling Mill

Continuous Cold Annealing& Pickling Line

Plating Mill

Black Coil

Skin Pass Mill

Hot LevellingLine

Hot Annealing &Pickling Line

TensionLevelling Line

Heat Treatment

HR Coil(Import)

VBA(Bright Annealing)

FinishingZRM(Cold rolling)

Manufacturing Process

98


98

PRODUCT INFORMATION

300 SeriesAustenite Grade304 / 304L304J1316 / 316L

400 SeriesFerrite Grade409L410L430436L439444445NF

Martensite Grade410410B420N1 / 420J2

Austenite304 18Cr-8Ni

304L 18Cr-9Ni-LC

Characteristics

304 : Most widely used steel type because of its good corrosion resistance, thermal resistance, strength at low-temperature and mechanical properties.

304L : Low-carbon 304 stainless steel. It is excellent in intergranular corrosion resistance.

Products available

304, 304L : Hot rolled coil, Cold rolled coil, Plate

Applications

304 : Household utensils (sink, interior pipe, hot-water system, bathtub, boiler and others), Automotive components (wiper, muffler, molding), medical instruments, building materials, some industries (chemical, food processing, textile) and vessel parts.

304L : Machinery and tools used in chemical, coal, and petroleum industries that require high inter-granular corrosion resistance, building materials, heat resistant parts and parts that is difficult to implement heat treatment, LNG tank.

PRODUCT OVERVIEW

300 Series

Chemical compositions and physical properties

Designations Chemical compositions (%) Mechanical properties Physical properties

JIS(KS) Posco C Cr Ni Mo Others

304304L

0.500.50

7.937.93

17.317.3

16.316.3

304304L

≤0.08≤0.03

≤200≤200

≥205≥175

≥520≥480

≥40≥40

18.0~20.018.0~20.0

8.00~10.59.00~13.0

--

--

YieldStrength(N/mm2)

TensileStrength(N/mm2)

SpecificHeatJ/g°C

ThermalExpansionCoefficient

W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

Product Information

1110 1110

Austenite 304J1 17Cr-8Ni-2Cu

Characteristics

With an addition of Cu, 304J1 has excellent antibiosis, formability, and deep drawability, also used for prod-ucts requiring sanitary environment.

Products available

Hot rolled coil, Cold rolled coil

Applications

• Thermos bottle • Thermos lunch box • Kitchen pot • Catering facilities • Products requiring spinning drawing



JIS(KS) Posco

304J1 0.50 7.93 17.3 16.3304J1

C

≤0.08 ≤200≥155 ≥450 ≥40

Cr

15.0~18.0

Ni

6.0~9.0

Mo

-

Others

Cu1.0~3.0



SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

Austenite316 18Cr-12Ni-2Mo

316L 18Cr-12Ni-2Mo-LC

Characteristics

316 : With the addition of Mo in 304, 316 steel is superior in corrosion resistance, pitting resistance and high temperature strength.

316L : Low carbon 316 steel type. It has all the properties of 316 steel and has excellent intergranular cor-rosion resistance.

Products available

Hot rolled coil, Cold rolled coil, Plate

Applications

316 • Potable water pipe • Equipment for manufacturing chemicals, paper, dye, acetic and fertilizer • Structures in the coastal area • Photo industries, and food processing industries316L • Suitable for the corrosion-susceptible environments such as salt and toxic gas which one of the

316 steel usages

Food Processing Facility Water Pipe Heat Exchanger

Chemical PlantA Section of Thermos Components of Burner (Presenting the process of forming) Flexible Pipe Heat Exchanger




316316L

0.500.50

7.987.98

15.915.9

16.316.3

316316L

≤0.08≤0.03

≤200≤200

≥205≥175

≥520≥480

≥40≥40

16.0~18.016.0~18.0

10.00~14.012.00~15.0

2.00~3.002.00~3.00

--



SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

PRODUCT OVERVIEW

300 Series

PRODUCT OVERVIEW

300 Series

Product Information

1312 1312

Ferrite 409L 11Cr-0.2Ti-LCN

Characteristics

Excellent weldability and formability by adding Ti.

Products available


Applications

• Auto exhaust parts (front pipe, convert shell, center pipe, tail end pipe) • Heat exchanger• Container • Heat resistance components

Main - Muffler(409L, 436L, AI-plate STS)

Center Pipe(409L, 439)

Catalytic Converter(409L, 439)

Front Pipe(430J1L, 439)

Flexible Pipe[ XM15J1, 304(L), 316(L) ]

Pre - Muffler(409L, 436L, AI-plate STS) Exhaust Manifold

(429EM, 430J1L, 310S)



JIS(KS) Posco

409L 0.46 7.75 6.5 24.9409L

C

≤0.03 ≤175≥175 ≥360 ≥25

Cr

10.50~11.75

Ni

-

Mo

-

Others

Ti 6xC%~0.75



SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

Ferrite

Characteristics

Lower C contents than 410 stainless steel. It has good formability, bendability and high temperature oxidation resistance.

Products available


Applications

• Products requiring abrasion resistance and good weldability : reefer container, automotive, mining & industrial machinery components.

• Products requiring formability and oxidation resistance at the temperature lower than 820°C : Boiler combustion chamber, burner components.

410L 12Cr-LCN

Boiler Combustion Chamber



JIS(KS) Posco

410L 0.46 7.75 9.9 25.1410L

C

≤0.03 ≤220≥195 ≥360 ≥22

Cr

11.0~13.5

Ni

-

Mo

-

OthersYield

Strength(N/mm2)


SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

-

PRODUCT OVERVIEW

400 Series

PRODUCT OVERVIEW

400 Series

Product Information

Reefer Container

1514 1514

Ferrite 430 16Cr-0.05C

Characteristics

Representative Ferritic Stainless Steel. It has low thermal expansion coefficient, excellent oxidation resistance.

Products available


Applications

Heat resistant products, Burner, Home appliances, Computer components (HDD), Flatware,Interior and exterior materials for architecture, Gas range stove, Washing machine



JIS(KS) Posco

430 0.46 7.70 10.5 23.9430

C

≤0.12 ≤200≥205 ≥450 ≥22

Cr

16.0~18.0

Ni

-

Mo

-

OthersYield

Strength(N/mm2)


SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

-

Ferrite

Characteristics

Excellent in corrosion resistance, drawability and weldability due to the addition of Mo, Ti and Nb.

Products available


Applications

• Auto exhaust parts • Hot water system • Electric home appliances

436L 18Cr-1Mo-0.3Ti-LCN

Main - Muffler(409L, 436L, AI-plate STS)

Center Pipe(409L, 439)

Catalytic Converter(409L, 439)

Front Pipe(430J1L, 439)

Flexible Pipe[ XM15J1, 304(L), 316(L) ]

Pre - Muffler(409L, 436L, AI-plate STS) Exhaust Manifold

(429EM, 430J1L, 310S)



JIS(KS) Posco

436L 0.46 7.70 9.3 23.9436L

C

≤0.025 ≤230≥245 ≥410 ≥20

Cr

16.0~19.0

Ni

-

Mo OthersYield

Strength(N/mm2)


SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

Ti, Nb, Zn8x(C%+N%)

~0.80.75~1.5

PRODUCT OVERVIEW

400 Series

PRODUCT OVERVIEW

400 Series

Product Information

1716 1716

Ferrite 439 18Cr-0.4Ti-LCN

Characteristics

With high thermal conductivity and low thermal expansion coefficiency, it is suitable for heat exchanger and auto exhaust parts.

Products available


Applications

Auto exhaust parts, Ornamental pipes, Hope applicane (washing machine)



JIS(KS) Posco

439 0.46 7.70 10.5 26.4-

C

≤0.03 ≤175≥175 ≥400 ≥22

Cr

17.0~19.0

Ni

-

Mo

-

OthersYield

Strength(N/mm2)


SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

Ti 0.2~1.0

Handrail Turbo Drum Base Fence

Ferrite

Characteristics

Higher Cr and Mo content bring great inter-granular corrosion resistance and SCC resistance.

Products available


Applications

• Potable water tank • Hot water system(solar/electric) • Heat exchanger• Auto Exhaust Manifold

444 19Cr-2Mo-0.3Nb-LCN



JIS(KS) Posco

444 0.427 7.75 11.0 26.8444

C

≤0.025 ≤230≥245 ≥410 ≥20

Cr

17.0~20.0

Ni

-

Mo OthersYield

Strength(N/mm2)


SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

Ti, Nb, Zn8x(C%+N%)

~0.81.75~2.5

Potable Water Tank Hot Water System

PRODUCT OVERVIEW

400 Series

PRODUCT OVERVIEW

400 Series

Product Information

1918 1918

Ferrite 445NF 21Cr-0.3Ti-0.4Cu-Si,Nb

Characteristics

Higher Cr content increases corrosion resistance and weldability. Applicable for various uses

Products available

Hot rolled coil, Cold rolled coi

Applications

Elevator, Interior and exterior materials for architecture, BBQ grill, Household utensils, Electronic components, Pip

Household Utensils

Elevator

Gas Range

Fence



JIS(KS) Posco

445NF 0.44 7.74 10.5 23-

C

≤0.015 ≤200≥245 ≥410 ≥22

Cr

20.0~23.0

Ni

≤0.5

Mo

-

Others YS TSSpecific

HeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

EI Hv SpecificGravity

Ti + Nb10(C+N)~0.6

Martensite

Characteristics

A representative type of Martensitic stainless steel. It has superior drawability and is hardened through heat treatment. (being magnetic)

Products available


Applications

• Knife blade • Machinery parts • Tableware cutlery (spoon, fork, knife, etc)

410 13Cr-0.04C



JIS(KS) Posco

410 0.46 7.70 9.9 24.9410

C

≤0.15 ≤210≥205 ≥440 ≥20

Cr

11.5~13.5

Ni

-

Mo OthersSpecific

HeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)



Elongation(%)

Hardness(Hv)

SpecificGravity

- -

-

PRODUCT OVERVIEW

400 Series

PRODUCT OVERVIEW

400 Series

Product Information

2120 2120

Martensite 410B 12Cr-0.4Ni

Characteristics

Compared to 410 stainless steel, quenching hardness is improved by controlling the quantity of Mn and Ni.

Products available

Hot rolled coil

Applications

Products requiring abrasion resistance between Hv 300~390 in Quenching hardness : Disc break of motorcycle



JIS(KS) Posco

410B 0.46 7.75 9.9 24.9-

C

≤0.15 ≤210≥205 ≥440 ≥20

Cr

11.5~13.5

Ni

≤0.6

Mo

-

Others

-

Martensite

Characteristics

420N1 : Improved formability, corrosion resistance and strength / Abrasion resistance than 420J1(magnetism). • Formability : minimize center segregation • Corrosion resistance : restrain the formation of chrome carbide • Strength / Abrasion resistance : precipitate of micro chrome nitride420J2 : Larger quenching hardness compared to 420J1

Products available

420N1, 420J2 : Hot rolled coil420J2 : Cold rolled coill

Applications

• High-quality table knives requiring corrosion and abrasion resistance• Machinery parts requiring abrasion resistance

-

420N1 13Cr-0.1C-0.1N

420J2 13Cr-0.3C




420N1420J2

0.460.46

7.757.75

10.310.3

23.823.8

-420J2

0.17 MAX0.26~0.4

≤218≤247

≥225≥225

≥520≥540

≥18≥18

12.0~14.012.0~14.0

--

--

N≤0.14-



SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

Elongation(%)

Hardness(Hv)

SpecificGravity

PRODUCT OVERVIEW

400 Series

PRODUCT OVERVIEW

400 Series

Product Information

SpecificHeatJ/g°C


W/m -°C(20-100°C)

ThermalConductivity

W/m -°C(100°C)

SpecificGravity



Elongation(%)

Hardness(Hv)

2322


2322

The selection of steel

Stainless steel type should be selected according to the application environment and purpose so as to keep fine appearance and extend the life time.

I : Indoor EnvironmentL : Low Grade EnvironmentM : Medium Grade EnvironmentH : High Grade Environment

Note: Excessive employmentSuitableAvailable given frequent cleaningUnsuitable

Environment

Steel

Pastoral area

I L M H I L M H I L M H I L M H

Industrial area Coastal areaUrban area

High CorrosionResistance STS

STS 316

STS 304

STS 430

Label

0.4 CUSTOMER NAMESUS 304 BA

SIZE

01

1219 x COIL

DATE

NT.WT.

GR.WT.CASE No.

POSCO VST CO.,LTD

2010.03.18

4,420 KG

4,510 KG

9PW4A4-2927-01

0.4 CUSTOMER NAMESUS 430 BA

SIZE

01

1219 x COIL

DATE

NT.WT.

GR.WT.CASE No.

POSCO VST CO.,LTD

2010.03.18

4,740 KG

4,850 KG

9PW4A4-2927-01

Surface finishing

Processing Method and application Surface status

No.1

No.2D

No.2B

No.3

No.4

HL

BA

DULL

Hot rolled product that has undergone both annealing and pickling process.Used for rerolling material, chemical plant, industrial tank, etc.

A non-glossy cold rolled product that has undergone both annealing and pickling process. Used for petrochemical plant, automobile parts, building materials, pipe, etc.

Skinpassed products of No.2D. Compared to No.2D, it attains a brighter and flatter finish. It is the standard surface with improved mechanical properties. Applicable for almost all uses.

Polished product with 100-120 mesh abraser.Variety of uses including building exterior and interior, various kinds of electronic products, kitchenware that require an attractive glossy finish.

Polished product with 150-180 mesh abraser. It has an attractive silvery-white surface, which is finer than No.3. Used for bathtubs, building exterior and interior, food industry installations, etc.

It is a product with continuous striped pattern acquired by polishing. Most widely used for building exterior and interior.It is also used for sash, doors, panel of building.

After cold rolling, the coil is annealed in a protective gas that prevents oxidisation of the surface and skinpassed. BA product is highly reflective. Also it is used for home appliances, small-sized mirror, kitchenware, building materials and others that require highly reflective properties.

Dull surface is matt finish produced by grinding with a fine rugged roll.Widely used for exterior and interior of train and building that require reduced light reflection.

ETC

Road 319B, Nhon Trach 1 IDZ, Dong Nai Prov., VietnamTel : +84-61-3560-360Fax : +84-61-3560-247

Hwa SeungVina

NHON TRACHIntersection

of three roads

BIG CSuper Market

VUNG TAU

CAT LAI

DragonBycycle

Formosa

Tin NghiaPetroleum

Station

NHON TRACHIndustrialZone

Tra�c Light

20-3

0 Km Caesar

1-2 Km

6-7 Km 16-17 Km

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