Product Standards

Hot Rolled Steel Sheets & Strips for Deep Drawing

These specifications are applied to the hot-rolled steel strips for cold-rolled deep drawing that are manufactured by POSCO.

Specifications Thickness
(mm)
Chemical Composition(wt.%)
C Si Mn P S Sol-Al Others
POSHRD2 1.8~7.0 ≤ 0.03 ≤ 0.03 ≤ 0.25 ≤ 0.02 ≤ 0.02 ≤ 0.06 -
POSHRD25 2.0~7.0 ≤ 0.005 ≤ 0.03 ≤ 0.20 ≤ 0.02 ≤ 0.02 ≤ 0.06 Ti 0.005~0.05
Nb 0.005~0.04
POSHRD3 2.0~7.0 ≤ 0.005 ≤ 0.03 ≤ 0.20 ≤ 0.02 ≤ 0.02 ≤ 0.06 Ti 0.01~0.06
Note)
  • 1. External appearance, shape, dimension, weight and thickness tolerance with SAE .
  • 2. This specification guarantees chemical composition without mechanical properties.

Acid Sulfuric Corrosion Resistance and Weather Resistance High Strength Steel Sheets & Strips

These specifications are applied to the acid sulfuric corrosion resistance and weather resistance hot-rolled high-strength steel sheets and strips that are manufactured by POSCO.

Specifications Thickness
(mm)
Chemical Composition(wt.%)
C Si Mn P S Others
ANCOR-H
(Acid Sulfuric Corrosion Resistant Steel)
1.8~7.0 ≤ 0.10 ≤ 0.50 ≤ 1.70 ≤ 0.035 ≤ 0.035 Cu ≤ 0.50
Cr ≤ 0.50
HICON700W
(Weather Resistant High Strength Steel)
2.3~6.5 ≤ 0.12 ≤ 0.45 ≤ 2.50 ≤ 0.035 ≤ 0.01 Cu ≤ 0.55
Cr ≤ 1.20
Specifications Yield Point
(MPa)
Tensile Strength
(MPa)
Elongation Bending Test
Test Piece % Bending Angle Inner Dia. Test Piece/Direction
ANCOR-H ≥ 245 ≥ 400 No.5 Rolling Direction ≥ 25 180° 1.5t JIS No1.Transverse to Rolling Direction
HICON700W ≥ 700 750~950 No.5 Rolling Direction ≥ 12 90° 1.0t JIS No5.Transverse to Rolling Direction
Note)
  • 1. External appearance, shape, dimension, weight and thickness tolerance with SAE.
  • 2. This specification guarantees chemical composition without mechanical properties.

Hot Rolled Steel Sheets & Strips for Automotive structural

These specifications are applied to the hot rolled steel sheets and strips for automotive structures that are manufactured by POSCO.

Specifications Thickness
(mm)
Chemical Composition(wt.%)
C Si Mn P S Nb
ATOS540(ATOS55) 2.3~12.7 ≤ 0.20 ≤ 0.40 ≤ 1.50 ≤ 0.03 ≤ 0.03 Added
ATOS590(ATOS60) 2.3~12.7 ≤ 0.20 ≤ 0.40 ≤ 1.50 ≤ 0.03 ≤ 0.03
ATOS780(ATOS80) 2.3~14 ≤ 0.20 ≤ 0.40 ≤ 2.00 ≤ 0.03 ≤ 0.03
ATOS980(ATOS100) 4~8.0 ≤ 0.20 ≤ 0.40 ≤ 2.00 ≤ 0.03 ≤ 0.03
Specifications Tensile Test Bending Test
Yield Point
(MPa)
Tensile Strength
(MPa)
Elongation(%), Thickness(mm) *Rolling Direction Bending Angle Inner Dia. Test Piece
(JIS No.3)
No.5 Test Piece,
2.5~5.0
No.5 Test Piece,
5.0~6.3
No.1 Test Piece,
6.3~12.7
ATOS540(ATOS55) ≥ 540 ≥ 340 ≥ 20 ≥ 21 ≥ 14 180° 1.5t Transverse to Rolling Direction
ATOS590(ATOS60) ≥ 590 ≥ 420 ≥ 19 ≥ 20 ≥ 13 180° 1.5t Transverse to Rolling Direction
ATOS780(ATOS80) ≥ 780 ≥ 700 ≥ 14 ≥ 14 ≥ 9 180° 1.5t Transverse to Rolling Direction
ATOS980(ATOS100) ≥ 980 ≥ 880 ≥ 8 (No. 5 test piece applied) 90° 3.0t Transverse to Rolling Direction
Note)
  • 1. External appearance, shape, dimension, weight and thickness tolerance with JI S G 3193(AN COR-H), JI S G 3134(HI CON700W).
  • 2. Number of tension test pieces and bend test pieces: one pieces each of the same charge and same thickness. However, in excess of 50 ton, two pieces of each.
  • 3. Bending test piece JI S No.3, perpendicular to rolling direction.
  • 4. umber of tensile, impact and bending test pieces for ATOS 100: use one sample per slab unit for tensile test; use one piece per class for impact test throughout the same charge. and thickness of steel; use one piece per class for bending test throughout the same charge and thickness of steel, but in excess of 50 tons, use two pieces per class.

Hot Rolled Steel Sheets & Strips for the Impact Beams and Stabilizers of Automobiles

These specifications are applied to the hot rolled steels strips for the impact beams and stabilizers of automobiles that are manufactured by POSCO.

Specifications Thickness
(mm)
Chemical Composition(wt.%)
C Si Mn P S Sol-Al Cr B
AUTOBEAM 1.6~7.0 ≤ 0.30 - ≤ 1.50 - ≤ 0.005 ≤ 0.12 0.10~0.30 -
STAB 1.6~7.0 ≤ 0.30 ≤ 0.25 ≤ 1.00 ≤ 0.025 ≤ 0.015 ≤ 0.10 0.20~0.40 0.001~0.005
Specifications Yield Point(MPa) Bending Test Remark
Bending Angle Inner Dia.
AUTOBEAM 490~784 180° 1.5t Steel pass through proper heat treatment to come out as finished products
STAB - 180° 1.5t
Note)
  • 1. External appearance, shape, dimension, weight and thickness tolerance with KS D 3555(AUTOBEA M), JI S G3193 (STAB).
  • 2. Number of tension test pieces and bend test pieces: one pieces each of the same charge and same thickness. However, in excess of 50 ton, two pieces of each.
  • 3. Bending test piece: JIS No.3 rolling direction.