steel sheets & coils for
AUTOMOTIVES
Cold Rolled Steel
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
steel sheets & coils for
AUTOMOTIVES
Cold Rolled Steel
Application
• Cold rolled steel that Dongbu Steel provides is the
optimal product for using in automobile parts as roofs,
fenders, hoods, panels, oil fans, etc.
Fender Trunk lid Outer
Floor Members Fuel Tank
steel sheets & coils for
AUTOMOTIVES
Cold Rolled Steel
Mechanical Properties
Standard Specification Dongbu
Class T.S EL Hardness T.S EL Hardness
(kg/mm2) min.(%) (HrB) (kg/mm 2) min.(%) (HrB)
28 32∼38 28 50
Commercial Quality 32∼38
and over and over and over and under
28 34∼40 28 49
Drawing Quality and over and over 34 and under
and over
28 36∼42 28 47
Deep Drawing Quality and over and over 36∼44 and under
and over
28 36∼42 28 47
Non-Aging DDQ 43∼47
and over and over and over and under
steel sheets & coils for
AUTOMOTIVES
Cold Rolled Steel
Mechanical Properties
Standard Specification Dongbu
Class T.S EL Hardness T.S EL Hardness
(kg/mm2) min.(%) (HrB) (kg/mm2) min.(%) (HrB)
35 34 35 34
35kg/R
and over and over and over and over
DQ
40 30 40 30
40kg/R
and over and over and over and over
High-
Strength
35 34 35 34
35kg/E
and over and over and over and over
DDQ
40 30 40 30
40kg/E
and over and over and over and over
※ Specifications of high tensile strength steel shall be subject to agreement
between manufacturer and purchaser.
steel sheets & coils for
AUTOMOTIVES
Cold Rolled Steel
Mechanical Properties
• 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
Cold Rolled Steel
Size Availability
(mm)
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
steel sheets & coils for
AUTOMOTIVES
Galvanized Products [Galvanized & Galvannealed]
Characteristics
• Specialty products manufactured by computer
integrated system
• Excellent flatness achieved by using PLTCM’s
base 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
Galvanized Products [Galvanized & Galvannealed]
Application
Automotive Engine Heat protector
steel sheets & coils for
AUTOMOTIVES
Galvanized Products [Galvanized & Galvannealed]
Mechanical Properties
Standard Specification Dongbu
Class
T.S Y.P EL T.S Y.P EL Hardness
(kg/mm 2) (kg/mm2) (%) (kg/mm 2) (kg/mm2) (%) (HrB)
Commercial Quality - - - 36∼42 26∼32 34∼42 55∼65
Drawing Quality min 28 max 22 min 41 28∼34 18∼22 41∼46 40∼50
Deep Drawing
min 28 max 18 min 43 28∼32 15∼18 43∼48 38∼48
Quality
Non-Aging DDQ min 28 max 17 min 45 28∼32 13∼17 45∼50 38∼48
35kg/R min 35 min 20 min 36 35∼38 20∼24 36∼42 56∼64
High-
Strength
40kg/R min 40 min 23 min 30 40∼44 23∼27 34∼40 60∼68
※ Specifications of high tensile strength steel shall be subject to agreement
between manufacturer and purchaser.
steel sheets & coils for
AUTOMOTIVES
Galvanized Products [Galvanized & Galvannealed]
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
steel sheets & coils for
AUTOMOTIVES
Galvanized Products [Galvanized & Galvannealed]
Size availability
DQ / DDQ / EDDQ
CQ
※ Please contact our representative for more information on 2.3mm
thickness of galvanized steel sheets.
steel sheets & coils for
AUTOMOTIVES
ALCOT [Hot-Dip Aluminium Coated Steel]
Characteristics
• Excellent heat resistance
Surface appearance after heat treatment
ALCOT GALVANIZED STEEL COLD ROLLED STEEL
※ Test Condition : At 450℃×24Hours In Air
steel sheets & coils for
AUTOMOTIVES
ALCOT [Hot-Dip Aluminium Coated Steel]
Characteristics
• Corrosion resistance
Corrosion 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.
steel sheets & coils for
AUTOMOTIVES
ALCOT [Hot-Dip Aluminium Coated Steel]
Application
Automotive Exhaust system
steel sheets & coils for
AUTOMOTIVES
ALCOT [Hot-Dip Aluminium Coated Steel]
Mechanical Properties
Standard Specification Dongbu
Class T.S Y.P EL T.S Y.P EL
min. min. min. min.
(kg/mm2) (kg/mm2) (%) (kg/mm2) (kg/mm2) (%)
Commercial Quality 28 21 min - 28 21 min -
DQ1 28 26 max 34∼38 28 26 max 34∼38
DQ2 28 24 max 36∼40 28 24 max 36∼40
Drawing
Quality
DQ3 28 21 max 38∼42 28 21 max 38∼42
EDDQ 26 19 max 40∼44 26 19 max 40∼44
※ Specifications of high tensile strength steel shall be subject to agreement
between manufacturer and purchaser.
steel sheets & coils for
AUTOMOTIVES
ALCOT [Hot-Dip Aluminium Coated Steel]
• 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
Chromated, Oiled,
0.4∼2.3 600∼1,350 40∼160
No treatment