steel sheets & coils for automotives characteristics high quality products manufactured by the...

steel sheets & coils for

AUTOMOTIVES

Characteristics

• High quality products manufactured by the

computer integrated system at Asan Bay Works

• Uniform thickness, wider width, and hardness

and tensile strength

• Smooth surface, and uniform flatness

• Superior workability

Cold Rolled Steel

steel sheets & coils for

AUTOMOTIVES

Application

Cold Rolled Steel

• Cold rolled steel that Dongbu Steel provides is theoptimal product for using in automobile parts as roofs,fenders, hoods, panels, oil fans, etc.

Fender Trunk lid Outer

Floor Fuel TankMembers

steel sheets & coils for

AUTOMOTIVES

Mechanical Properties

Cold Rolled Steel

47and under36 44∼

28and over

36 42∼and over

28and overDeep Drawing Quality

Hardness(HrB)

ELmin.(%)

T.S(kg/mm2)

Hardness(HrB)

ELmin.(%)

T.S(kg/mm2)

49and under3428

and over34 40∼

and over28

and overDrawing Quality

47and under

50and under

28and over

28and over

Dongbu

36 42∼and over

32 38∼and over

Non-Aging DDQ

Commercial Quality

Class

43 47∼28

and over

32 38∼28and over

Standard Specification

steel sheets & coils for

AUTOMOTIVES

30and over

40and over

30and over

40and over40kg/E

34and over

35and over

34and over

35and over35kg/E

DDQ

30and over

40and over

30and over

40and over40kg/R

34and over

35and over

34and over

35and over35kg/R

DQ

High-Strength

Hardness(HrB)

ELmin.(%)

T.S(kg/mm2)

Hardness(HrB)

ELmin.(%)

T.S(kg/mm2)

DongbuStandard SpecificationClass

※ Specifications of high tensile strength steel shall be subject to agreement between manufacturer and purchaser.

Mechanical Properties

Cold Rolled Steel

steel sheets & coils for

AUTOMOTIVES

Mechanical Properties

Cold Rolled Steel

• Specification

KSD 3512 JIS G3141 ASTM EN 10130 DIN 1623

SPCC SPCC A 366 Fe P01 -

SPCD SPCD A 619 Fe P03 St 12

SPCE SPCE A 620 Fe P04 St 13

SPCEN SPCEN A 620 Fe P04 St 14

steel sheets & coils for

AUTOMOTIVES

Size Availability

Cold Rolled Steel

Thickness

Width

CQ DQ DDQ High-strength

0.15 3.2∼ 0.25 2.0∼ 0.5 2.0∼ 0.6 1.6∼ 700 1,600∼

(mm)

steel sheets & coils for

AUTOMOTIVES

Characteristics

Galvanized Products [Galvanized & Galvannealed]

• Specialty products manufactured by computer integrated system

• Excellent flatness achieved by using PLTCM’sbase metal

• Excellent adhesion of Fe-Zn coating

• Induction heating GA furnace- Uniform iron contents on the alloyed surface

- Improvement of powdering resistance

→ Excellent corrosion resistance, weldability, and paintability

steel sheets & coils for

AUTOMOTIVES

Application

Galvanized Products [Galvanized & Galvannealed]

Automotive Engine Heat protector

steel sheets & coils for

AUTOMOTIVES

Mechanical Properties

Galvanized Products [Galvanized & Galvannealed]

60 68∼

56 64∼

38 48∼

38 48∼

40 50∼

55 65∼

Hardness(HrB)

43 48∼15 18∼28 32∼min 43max 18min 28Deep Drawing

Quality

36 42∼20 24∼35 38∼min 36min 20min 3535kg/RHigh-

Strength

EL(%)

Y.P(kg/mm2)

T.S(kg/mm2)

EL(%)

Y.P(kg/mm2)

T.S(kg/mm2)

41 46∼18 22∼28 34∼min 41max 22min 28Drawing Quality

34 40∼

45 50∼

34 42∼

40 44∼

28 32∼

36 42∼

Dongbu

min 23

max 17

-

40kg/R

Non-Aging DDQ

Commercial Quality

Class

23 27∼min 30min 40

13 17∼min 45min 28

26 32∼--

Standard Specification

※ Specifications of high tensile strength steel shall be subject to agreement between manufacturer and purchaser.

steel sheets & coils for

AUTOMOTIVES

Mechanical Properties

• Specification

KSD 3506 JIS G3302 ASTM BS 2989 DIN 17162

SGCC SGCC A 526 Z1 St 01z

SGCD 2 SGCD 2 A 526-L Z3 St 03z

SGCD 3 SGCD 3 A 528 Z4 St 04z

SGCN SGCD3N A 653-97 Z5 St 05z

Galvanized Products [Galvanized & Galvannealed]

steel sheets & coils for

AUTOMOTIVES

Size availability

CQ

DQ / DDQ / EDDQ

※ Please contact our representative for more information on 2.3mm thickness of galvanized steel sheets.

Galvanized Products [Galvanized & Galvannealed]

steel sheets & coils for

AUTOMOTIVES

Characteristics

ALCOT [Hot-Dip Aluminium Coated Steel]

• Excellent heat resistanceSurface appearance after heat treatment

ALCOT GALVANIZED STEEL COLD ROLLED STEEL

※ Test Condition : At 450℃×24Hours In Air

steel sheets & coils for

AUTOMOTIVES

Characteristics

• Corrosion resistanceCorrosion rate with PH changes in solution

※ The corrosion resistance of ALCOT is excellent due to the coating characteristics to form a thin stable aluminum oxide layer.

ALCOT [Hot-Dip Aluminium Coated Steel]

steel sheets & coils for

AUTOMOTIVES

Application

ALCOT [Hot-Dip Aluminium Coated Steel]

Automotive Exhaust system

steel sheets & coils for

AUTOMOTIVES

Mechanical Properties

※ Specifications of high tensile strength steel shall be subject to agreement between manufacturer and purchaser.

DQ2

DQ1 34 38∼26 max2834 38∼26 max28

38 42∼21 max2838 42∼21 max28DQ3

DrawingQuality

ELmin.(%)

Y.P

(kg/mm2)

T.Smin.

(kg/mm2)

ELmin.(%)

Y.P

(kg/mm2)

T.Smin.

(kg/mm2)

40 44∼

36 40∼

-

26

28

28

Dongbu

19 max

24 max

21 min

EDDQ

Commercial Quality

Class

19 max40 44∼26

24 max36 40∼28

21 min-28

Standard Specification

ALCOT [Hot-Dip Aluminium Coated Steel]

steel sheets & coils for

AUTOMOTIVES

• Specification

KSD 3544 JIS G3314 ASTM A 463 ASTM A 463-96a EN 10154

SA1C SA1C CQ CS Type A,B,C DX 51D,52D

SA1A SA1A ADQ - DX53D

SA1D SA1D DQ FS, DDS DX54D,55D

SA1E SA1E DQSK - -

• Scope of Manufacturing Field

Thickness(mm) Width(mm) Coating Weight(g/m2) Post-treatment

0.4 2.3∼ 600 1,350∼ 40 160∼ Chromated, Oiled, No treatment

ALCOT [Hot-Dip Aluminium Coated Steel]