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DUAL-PHASE STEELS

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In category Hot Dip Galvanized

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CHARACTERISTICS

The dual phase bake - hardening steels is a versatile material for the automotive industry due to its improved formability, capacity to absorb crash energy, and ability to resist fatigue.

U. S. Steel Košice has implemented and maintains a quality control system in accordance with the standard EN ISO 9001 and IATF 16949 for the automotive industry, issued by TÜV SÜD.

TECHNICAL SPECIFICATION

CHEMICAL COMPOSITION

Grades according to EN 10346/09 Heat analysis in %
CMAX SiMAX MnMAX PMAX SMAX Al Cr+Mo(max) Nb+Ti(max) VMAX BMAX
HCT450X +Z, +ZF 0,14 0,80 2,00 0,080 0,015 <2,00 1,0 0,15 0,2 0,005
HCT500X +Z, +ZF 0,14 0,80 2,00 0,080 0,015 <2,00 1,0 0,15 0,2 0,005
HCT600X +Z, +ZF 0,17 0,80 2,20 0,080 0,015 <2,00 1,0 0,15 0,2 0,005
HCT780X +Z, +ZF 0,18 0,80 2,50 0,080 0,015 <2,00 1,0 0,15 0,2 0,005

MECHANICAL PROPERTIES

Grades according to
EN 10346/09
U. S. Steel Košice
Rp0,2
[MPa]
Rm
[MPa]
A MIN (%)
Lo = 80 mm
WH exponent
n10 - UE
Index BH efektu BH2
[MPa]
HCT450X +Z, +ZF 260 - 340 450 27 min. 0,16 min. 30
HCT500X +Z, +ZF 300 - 380 500 23 min. 0,15 min. 30
HCT600X +Z, +ZF 340 - 420 600 20 min. 0,14 min. 30
HCT780X +Z, +ZF 450 - 560 780 14 - min. 30

DIMENSIONS OF SHEETS AND COILS [ MM ]

HCT450X

Nominal thickness Šírka
  800 1000 1100 1250 1300 1400 1500
0,46 - 0,75            
0,76 - 0,95          
0,96 - 1,45        
1,46 - 2,00      

ROZMERY TABÚĽ A ZVITKOV [ MM ]

HCT500X AND HIGHER

Nominal thickness Width
  800 1240 1260 1400 1500
0,50 - 0,79            
0,80 - 0,99          
1,00 - 1,49        
1,50 - 2,00      
Nominal thickness Sheet length Coil diameter Slit coil width Nominal coil weight
[kg.mm -1 of width]
inner outer
0,50 - 2,00 1 000 - 3 100 cca 500 max. 1 400 40 - 600
(depending on sheet thickness)
3 - 9,9
cca 600
2 - 9,4

Thickness is graded by 0,01 mm, width is graded by 5,0 mm, length is graded by 5 mm; nominal thickness includes zinc coat

THICKNESS TOLERANCES - EN 10143/06 [ MM ]

260 ≤­­ RE < 360 MPA

Nominal thickness Normal tolerances at width Reduced tolerances at width
≤­­ 1 200 >1 200 ≤­­ 1 500 ≤­­ 1 200 >1 200 ≤­­ 1 500
> 0,40 ≤ 0,60 ± 0,05 ± 0,06 ± 0,040 ± 0,045
> 0,60 ≤ 0,80 ± 0,06 ± 0,07 ± 0,045 ± 0,050
> 0,80 ≤ 1,00 ± 0,07 ± 0,08 ± 0,050 ± 0,060
> 1,00 ≤ 1,20 ± 0,08 ± 0,09 ± 0,060 ± 0,070
> 1,20 ≤ 1,60 ± 0,11 ± 0,13 ± 0,070 ± 0,080
> 1,60 ≤ 2,00 ± 0,14 ± 0,15 ± 0,080 ± 0,090

NOTE: reduced tolerances are the subject to prior agreement

SHEET FLATNESS TOLERANCES IN ACCORDANCE WITH EN 10143/06 [ MM ]

260 ≤­­ ­­ RE < 360 MPA

Nominal width Normal tolerances at thickness Reduced tolerances at thickness
< 0,70  ≥­­ 0,70 < 2,00 < 0,70  ≥­­ 0,70 < 1,60  ≥­­ 1,60 ≤ 2,00
 ≥ 600 < 1 200 13 10 8 6 5
 ≥ 1 200 < 1 500 15 13 9 8 6
 ≥ 1 500 20 19 12 10 9

NOTE: flatness tolerances valid only for plates

THICKNESS TOLERANCES - EN 10143/06 [ MM ]

360 ≤­­ RE ≤­­ 420 MPA

Nominal thickness Normal tolerances at width Reduced tolerances at width
≤­­ 1 200 >1 200 ≤­­ 1 500 ≤­­ 1 200 >1 200 ≤­­ 1 500
> 0,40 ≤ 0,60 ± 0,06 ± 0,07 ± 0,045 ± 0,050
> 0,60 ≤ 0,80 ± 0,07 ± 0,08 ± 0,050 ± 0,060
> 0,80 ≤ 1,00 ± 0,08 ± 0,09 ± 0,060 ± 0,070
> 1,00 ≤ 1,20 ± 0,10 ± 0,11 ± 0,070 ± 0,080
> 1,20 ≤ 1,60 ± 0,13 ± 0,14 ± 0,080 ± 0,090
> 1,60 ≤ 2,00 ± 0,16 ± 0,17 ± 0,090 ± 0,110

NOTE: reduced tolerances are the subject to prior agreement

THICKNESS TOLERANCES - EN 10143/06 [ MM ]

420 ≤­­ RE ≤­­ 900 MPA

Nominal thickness Normal tolerances at width Reduced tolerances at width
≤­­ 1 200 >1 200 ≤­­ 1 500 ≤­­ 1 200 >1 200 ≤­­ 1 500
> 0,40 ≤ 0,60 ± 0,06 ± 0,08 ± 0,050 ± 0,060
> 0,60 ≤ 0,80 ± 0,07 ± 0,09 ± 0,060 ± 0,070
> 0,80 ≤ 1,00 ± 0,09 ± 0,11 ± 0,070 ± 0,080
> 1,00 ≤ 1,20 ± 0,11 ± 0,13 ± 0,080 ± 0,090
> 1,20 ≤ 1,60 ± 0,15 ± 0,16 ± 0,090 ± 0,011
> 1,60 ≤ 2,00 ± 0,18 ± 0,19 ± 0,011 ± 0,012

NOTE: reduced tolerances are the subject to prior agreement

SHEET FLATNESS TOLERANCES IN ACCORDANCE WITH EN 10143/06 [ MM ]

RE ≤­­ 360 MPA

Flatness tolerances for steels with minimum yield strength ≤ 360 MPa are to be agreed in order
NOTE: flatness tolerances valid only for plates

PARAMETERS OF COATING

Zinc coating
(Z)
Min. plošná hmotnosť zinkového
povlaku na oboch stranách [g.m-2]
same 100; 140; 150; 180; 200; 225; 275;(350)
differential 140/100; 150/85;

 

Zinc-iron coating
(ZF)
Min. plošná hmotnosť zinkového
povlaku na oboch stranách [g.m-2]
same 90; 100; 110; 120

Other dimensions are subject to prior agreement
Informative thickness of zinc layer: 7g.m-2 ≈ 1μm

OTHER FEATURES

COATING PROPERTIES

Zinc coated products (Z)

  • normal zinc spangle (N)
  • minimized spangle (M)

Zinc-iron alloy coated products (ZF)

SURFACE QUALITY

  • coated surface A according to EN 10 346/09
  • improved surface B according to EN 10 346/09

SURFACE TREATMENT

  • chemically passivated C (Cr 6+ free; f- - free, RoHS compliant
  • oiled O (0,6-2,5 g.m-2 )
  • chemically passivated and oiled CO (only coils)
  • TOC (Thin Organic Coating) S
  • without surface treatment

If you need specific parameters that are not listed here, please contact us

Logistics information

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