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]
Recommended