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  • Automotive - Cold-rolled - Steel for forming

    Cold-rolled, uncoated steel for cold forming and deep drawing is available in a range of grades.

    Each grade is designed for a range of possible applications: from outer panels like roofs to structural reinforcements like seat cross members – allowing you to pick the best steel for your product.

     

    Contact us

    Tata Steel

    Automotive

    PO Box 10.000, Dudokhuis

    1970 CA IJmuiden

    The Netherlands

    T +31 (0) 251 495748

    Overview

    Our forming steel is available in a choice of widths up to 2050mm and thicknesses up to 3.1mm. This provides opportunities for cutting waste and maximising yield.These products are made using one of two process routes:

    • continuous annealing (CA)
    • batch annealing (BA)

    Applications

    Automotive components and body panels

    Relationship with standards

    Cold-rolled steel for forming complies with European standard EN 10130: 2006 and is available in the grades shown below.

    European standard VDA National standards
    EN 10130:2006   Germany, DIN 1623 part 1
    Grade  Grade Grade
    DC01 CR1 St 12
    DC03 CR2 St 13
    DC04 CR3 St 14
    DC05 CR4 St 15 1
    DC06 CR5 IF 18 2

    1. Not in standard. Tata Steel’s own specification.
    2. Also part of the SEW095 specification.

     

     

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    Properties

    Mechanical properties

    Cold-rolled steel for forming has the following mechanical properties
    (skin-passed) - these are measured transverse to the rolling direction:

    EN 10130:2006

    Max. yield strength
    Re 1, 2, 6

    Tensile strength Rm

    Min. elongation after fracture A80 3

    Min. r90-value 4, 5

    Min. n90-value 4

    Grade

     N/mm2

    N/mm2 

    %

     

     

    DC01

    280

    270 - 410

    28

    -

    -

    DC03

    240

    270 - 370

    34

    1.3

    -

    DC04

    210

    270 - 350

    38

    1.6

    0.180

    DC05

    180

    270 - 330

    40

    1.9

    0.200

    DC06

    170

    270 - 330

    41

    2.1

    0.220

    1. The values of the yield strength are those of the 0.2% yield strength for products
    with no definite yield point and the lower yield strength ReL for the other products.
    2. For thicknesses > 0.5mm and ≤ 0.7mm, the value for yield strength is increased
    by 20 N/mm2. For thicknesses ≤ 0.5mm, the value is increased by 40 N/mm2.
    3. For thicknesses > 0.5mm and ≤ 0.7mm the minimum elongation after fracture is decreased by 2%. For thicknesses ≤ 0.5mm the minimum elongation after fracture is decreased by 4%.
    4. The r- and n- values apply to a thickness of t ≥ 0.5mm.
    5. For a thickness of t > 2mm, the r90 value or r-average value is decreased by 0.2.
    6. For design purposes, a lower yield strength ReL of at least 120 N/mm2 can be assumed for DC06 and 140 N/mm2 for DC01 / DC03 / DC04 / DC05.

     

    Chemical composition

    Cold-rolled steel for forming supplied by Tata Steel comply to the following cast analysis with maximum values in weight percentages unless otherwise shown:

    All values in weight %.

    EN 10130:2006

    C

    Mn

    P

    S

    Ti

    Grade

    Max.

    Max.

    Max.

    Max.

    Max.

    DC01

    0.12

    0.60

    0.045

    0.045

    -

    DC03

    0.10

    0.45

    0.035

    0.035

    -

    DC04

    0.08

    0.40

    0.030

    0.030

    -

    DC05

    0.06

    0.35

    0.025

    0.025

    -

    DC06

    0.02

    0.25

    0.020

    0.020

    0.30

    Titanium may be replaced by niobium. Carbon and nitrogen will be completely bound.

     

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    Dimensions

     

    Dimensional capability - Continuously annealed (CA)

    Dimensions in mm.

     

    Thickness Max. width      
    From - to DC01 DC03 DC04 DC05 DC06
    0.37 - 0.45 1390 - - - -
    0.45 - 0.50 1470 - - - -
    0.50 - 0.55 1550 1400 1450 1450 1450
    0.55 - 0.60 1550 1510 1450 1450 1450
    0.60 - 0.65 1710 1600 1600 1600 1600
    0.65 - 0.70 1710 1635 1650 1650 1650
    0.70 - 0.75 1710 1650 1700 1700 1700
    0.75 - 0.78 1820 1815 1700 1700 1700
    0.78 - 0.80 1820 1815 1785 1785 1785
    0.80 - 1.20 1820 1815 1785 1785 1785
    1.20 - 1.60 1820 1815 1785 1785 -
    1.60 - 1.70 1750 1750 1750 - -
    1.70 - 1.80 1650 1650 1650 - -
    1.80 - 1.90 1525 1525 1525 - -
    1.90 - 1.95 1520 1500 1500 - -
    1.95 - 2.00 1500 1500 1500 - -

    Minimum width is 900mm for thicknesses below 0.5mm
    Minimum width is 825mm for all other thicknesses below.
    Other dimensions may be available - please contact us for details.

     

    Dimensional capability - Batch annealed (BA)

    Dimensions in mm.

    Thickness Max. Width      
    From - to DC01 DC03 DC04 DC05 DC06
    0.35 - 0.37 1300 1300 1300 1300 -
    0.37 - 0.40 1630 1530 1530 1300 -
    0.40 - 0.50 1690 1680 1680 1760 -
    0.50 - 0.60 1920 1750 1750 1840 1900
    0.60 - 0.70 1920 1790 1790 1880 2010
    0.70 - 0.80 1970 1830 1830 1920 2030
    0.80 - 0.90 2030 1880 1880 1970 2030
    0.90 - 1.00 2030 1920 1920 2020 2030
    1.00 - 1.10 2030 1970 1970 2030 2030
    1.10 - 1.20 2030 2020 2020 2030 2030
    1.20 - 1.30 2030 2030 2030 2030 2030
    1.30 - 1.50 2030 2030 2030 1880 2030
    1.50 - 1.60 2030 2030 2030 1880 1920
    1.60 - 1.70 2030 2030 2030 1730 1800
    1.70 - 1.80 2030 2030 2030 1730 1720
    1.80 - 1.90 2030 2030 2030 1570 1600
    1.90 - 2.00 2030 1960 1960 1570 1550
    2.00 - 2.10 2030 1840 1840 1430 1490
    2.10 - 2.20 2030 1840 1840 1430 1420
    2.20 - 2.40 2030 1700 1700 1310 -
    2.40 - 2.50 1960 1570 1570 1300 -
    2.50 - 2.60 1940 1570 1570 - -
    2.60 - 2.70 1920 1500 1500 - -
    2.70 - 2.80 1850 1500 1500 - -
    2.80 - 2.90 1790 1500 1500 - -
    2.90 - 3.00 1730 1500 1500 - -

    Minimum width is 710mm.
    Other dimensions may be available - please contact us for details.

     

    Tolerances

    Tolerances comply with standard EN 10131:2006 (click here).
    Tighter tolerances are available, please contact us for details.

     

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    Overview

    Overview

    Our forming steel is available in a choice of widths up to 2050mm and thicknesses up to 3.1mm. This provides opportunities for cutting waste and maximising yield.These products are made using one of two process routes:

    • continuous annealing (CA)
    • batch annealing (BA)

    Applications

    Automotive components and body panels

    Relationship with standards

    Cold-rolled steel for forming complies with European standard EN 10130: 2006 and is available in the grades shown below.

    European standard VDA National standards
    EN 10130:2006   Germany, DIN 1623 part 1
    Grade  Grade Grade
    DC01 CR1 St 12
    DC03 CR2 St 13
    DC04 CR3 St 14
    DC05 CR4 St 15 1
    DC06 CR5 IF 18 2

    1. Not in standard. Tata Steel’s own specification.
    2. Also part of the SEW095 specification.

     

     

    back to top

    Properties

    Properties

    Mechanical properties

    Cold-rolled steel for forming has the following mechanical properties
    (skin-passed) - these are measured transverse to the rolling direction:

    EN 10130:2006

    Max. yield strength
    Re 1, 2, 6

    Tensile strength Rm

    Min. elongation after fracture A80 3

    Min. r90-value 4, 5

    Min. n90-value 4

    Grade

     N/mm2

    N/mm2 

    %

     

     

    DC01

    280

    270 - 410

    28

    -

    -

    DC03

    240

    270 - 370

    34

    1.3

    -

    DC04

    210

    270 - 350

    38

    1.6

    0.180

    DC05

    180

    270 - 330

    40

    1.9

    0.200

    DC06

    170

    270 - 330

    41

    2.1

    0.220

    1. The values of the yield strength are those of the 0.2% yield strength for products
    with no definite yield point and the lower yield strength ReL for the other products.
    2. For thicknesses > 0.5mm and ≤ 0.7mm, the value for yield strength is increased
    by 20 N/mm2. For thicknesses ≤ 0.5mm, the value is increased by 40 N/mm2.
    3. For thicknesses > 0.5mm and ≤ 0.7mm the minimum elongation after fracture is decreased by 2%. For thicknesses ≤ 0.5mm the minimum elongation after fracture is decreased by 4%.
    4. The r- and n- values apply to a thickness of t ≥ 0.5mm.
    5. For a thickness of t > 2mm, the r90 value or r-average value is decreased by 0.2.
    6. For design purposes, a lower yield strength ReL of at least 120 N/mm2 can be assumed for DC06 and 140 N/mm2 for DC01 / DC03 / DC04 / DC05.

     

    Chemical composition

    Cold-rolled steel for forming supplied by Tata Steel comply to the following cast analysis with maximum values in weight percentages unless otherwise shown:

    All values in weight %.

    EN 10130:2006

    C

    Mn

    P

    S

    Ti

    Grade

    Max.

    Max.

    Max.

    Max.

    Max.

    DC01

    0.12

    0.60

    0.045

    0.045

    -

    DC03

    0.10

    0.45

    0.035

    0.035

    -

    DC04

    0.08

    0.40

    0.030

    0.030

    -

    DC05

    0.06

    0.35

    0.025

    0.025

    -

    DC06

    0.02

    0.25

    0.020

    0.020

    0.30

    Titanium may be replaced by niobium. Carbon and nitrogen will be completely bound.

     

    back to top

    Dimensions

    Dimensions

     

    Dimensional capability - Continuously annealed (CA)

    Dimensions in mm.

     

    Thickness Max. width      
    From - to DC01 DC03 DC04 DC05 DC06
    0.37 - 0.45 1390 - - - -
    0.45 - 0.50 1470 - - - -
    0.50 - 0.55 1550 1400 1450 1450 1450
    0.55 - 0.60 1550 1510 1450 1450 1450
    0.60 - 0.65 1710 1600 1600 1600 1600
    0.65 - 0.70 1710 1635 1650 1650 1650
    0.70 - 0.75 1710 1650 1700 1700 1700
    0.75 - 0.78 1820 1815 1700 1700 1700
    0.78 - 0.80 1820 1815 1785 1785 1785
    0.80 - 1.20 1820 1815 1785 1785 1785
    1.20 - 1.60 1820 1815 1785 1785 -
    1.60 - 1.70 1750 1750 1750 - -
    1.70 - 1.80 1650 1650 1650 - -
    1.80 - 1.90 1525 1525 1525 - -
    1.90 - 1.95 1520 1500 1500 - -
    1.95 - 2.00 1500 1500 1500 - -

    Minimum width is 900mm for thicknesses below 0.5mm
    Minimum width is 825mm for all other thicknesses below.
    Other dimensions may be available - please contact us for details.

     

    Dimensional capability - Batch annealed (BA)

    Dimensions in mm.

    Thickness Max. Width      
    From - to DC01 DC03 DC04 DC05 DC06
    0.35 - 0.37 1300 1300 1300 1300 -
    0.37 - 0.40 1630 1530 1530 1300 -
    0.40 - 0.50 1690 1680 1680 1760 -
    0.50 - 0.60 1920 1750 1750 1840 1900
    0.60 - 0.70 1920 1790 1790 1880 2010
    0.70 - 0.80 1970 1830 1830 1920 2030
    0.80 - 0.90 2030 1880 1880 1970 2030
    0.90 - 1.00 2030 1920 1920 2020 2030
    1.00 - 1.10 2030 1970 1970 2030 2030
    1.10 - 1.20 2030 2020 2020 2030 2030
    1.20 - 1.30 2030 2030 2030 2030 2030
    1.30 - 1.50 2030 2030 2030 1880 2030
    1.50 - 1.60 2030 2030 2030 1880 1920
    1.60 - 1.70 2030 2030 2030 1730 1800
    1.70 - 1.80 2030 2030 2030 1730 1720
    1.80 - 1.90 2030 2030 2030 1570 1600
    1.90 - 2.00 2030 1960 1960 1570 1550
    2.00 - 2.10 2030 1840 1840 1430 1490
    2.10 - 2.20 2030 1840 1840 1430 1420
    2.20 - 2.40 2030 1700 1700 1310 -
    2.40 - 2.50 1960 1570 1570 1300 -
    2.50 - 2.60 1940 1570 1570 - -
    2.60 - 2.70 1920 1500 1500 - -
    2.70 - 2.80 1850 1500 1500 - -
    2.80 - 2.90 1790 1500 1500 - -
    2.90 - 3.00 1730 1500 1500 - -

    Minimum width is 710mm.
    Other dimensions may be available - please contact us for details.

     

    Tolerances

    Tolerances comply with standard EN 10131:2006 (click here).
    Tighter tolerances are available, please contact us for details.

     

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