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  • Automotive - Cold-rolled

    Tata Steel offers a comprehensive range of cold-rolled steel comprising both continuously-annealed and batch-annealed products.  

    This means we can tailor our offer to meet your precise requirements for formability, strength, surface finish or flatness.

    • Cold forming and deep drawing

      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.

    • CR high-strength steels – strong, lightweighting

      We offer a range of steels for automotive applications requiring high strength without the weight penalty.

      The range compromises microalloyed, rephosphorised and carbon manganese high-strength steels in cold-rolled uncoated condition. Ideal for strong, thin gauge products.

    • CR AHSS-UHSS: design freedom

      Our cold-rolled dual phase and hot forming grades include advanced and ultra high-strength steels.

      Originally developed for the demanding automotive market, they also meet a variety of performance and processing requirements for other advanced applications.

    Contact us

    Tata Steel

    Automotive

    PO Box 10.000, 7H-04

    1970 CA IJmuiden

    The Netherlands

    T +31 (0) 251 495748

    Overview

     

    Our cold-rolled products are tailored to deliver the optimum in structural and safety performance in conjunction with our services for lightweighting and cost reduction. We place special emphasis on meeting the Class A surface finish requirements of our customers.

    Coupled with consistent quality, our wide product selection provides opportunities for you to optimise both your products and processes.The benefits of our cold-rolled steel include:

    • consistent and reliable end product quality
    • lighter and stronger products
    • repeatable, trouble-free processing
    • maximised yield
    • reduced waste and rework

    Applications

    Body and closure panels
    Interior and trim
    Automotive components

    Grades

    This section of the catalogue shows the grades of cold-rolled steel offered by Tata Steel. These include grades for forming, high-strength steels and advanced and ultra high-strength steels.

    Supply – product conditions

    We supply cold-rolled steel in the following conditions:

    • annealed and skin-passed
    • full hard
    • sheets, discs and slit wide coil

    Tata Steel produces cold-rolled and annealed strip by either the
    continuously-annealed (CA) or batch- annealed (BA) processes.

     

    back to top

    Surface quality

     

    Surface quality A

    Defects that do not influence the formability or the application of surface coatings are permitted. They are defects such as pores, minor scratches, slight indentations, small grooves or slight discolouration.

    Surface quality B

    The better side must be free of defects that can spoil the uniform appearance of a high-quality paint or of an electrolytic coating. The other side must at least conform to surface quality A. Not all combinations of thickness and width are available in surface quality B. Please contact us for details.

    Inspected side

    As a rule, the upper side of the strip is inspected; on request, the strip can be wound so that the inspected side is the underside.

    Surface texture/roughness

    Cold-rolled annealed and skin-passed steel is available in several surface textures. Unless specified otherwise, Tata Steel will supply normal roughness. The table below shows the range of surface textures according to EN 10130: 2006.

     

     

    Roughness Ra
    (µm)

    EN 10130: 2006 Grade

    Symbol

    cut off 0.8 mm

    extra-bright 1

    -

    ≤ 0.30

    bright

    b

    ≤ 0.4

    semi-bright

    g

    ≤ 0.9

    normal

    m

    0.6 - 1.9

    rough

    r

    > 1.6

    extra rough 1

    -

    > 2.5

    1. Not in EN 10130: 2006 - Tata Steel’s own specification.
    Other surface textures are available to meet your requirements - please contact us for details.

    Preservative oil

    The standard oil applied by Tata Steel acts as a protective coating. Other types of oil may be available to meet your requirement.

    Tata Steel offers a range of oiling levels from

    • 0.4 - 1.7 g/m2 per side from Tata Steel in the UK
    • 0.25 - 1.7 g/m2 per side from Tata Steel in the Netherlands.

    Other oiling levels are available on request. Tata Steel is not responsible for the risk of corrosion during storage or shipment if material is ordered in the un-oiled condition.

     

    Surface cleanliness

    Tata Steel can guarantee improved surface cleanliness on request for batch-annealed products. The cleanliness is tested with a tape test, in which the loss of reflection is measured. The reflection gives an indication of the oil residue on the annealed product. Two levels of loss of reflectivity are available for batch annealed products: a maximum of 20% or a maximum of 30%. Continuously-annealed products typically exhibit a loss of reflection up to around 10%.

     

    back to top

    Shape and dimensional tolerances

     

    Tolerances on shape and dimensions comply with standard EN 10131: 2006

    Tolerances on thickness

    Tolerance (EN 10131: 2006)

    Availability

    Full thickness tolerance

    Available

    Special thickness tolerances

    Available

    50% of full thickness tolerance

    Refer before ordering

    Tolerances closer than special tolerances may be agreed at the time of enquiry.
    Tolerances in mm.

    Tolerances on thickness for steel grades with a specified minimum yield strength
    Re < 260N/mm2.

    Nominal
    thickness

    Normal tolerances for a nominal width of 1

    Special tolerances (S) for a
    nominal width of 1 2

     

    ≤ 1200

    > 1200

    > 1500

    ≤ 1200

    > 1200

    > 1500

     

    ≤ 1500

     

     

    ≤ 1500

     

    ≥ 0.35

    ≤ 0.40

    ± 0.03

    ± 0.04

    ± 0.05

    ± 0.020

    ± 0.025

    ± 0.030

    > 0.40

    ≤ 0.60

    ± 0.03

    ± 0.04

    ± 0.05

    ± 0.025

    ± 0.030

    ± 0.035

    > 0.60

    ≤ 0.80

    ± 0.04

    ± 0.05

    ± 0.06

    ± 0.030

    ± 0.035

    ± 0.040

    > 0.80

    ≤ 1.00

    ± 0.05

    ± 0.06

    ± 0.07

    ± 0.035

    ± 0.040

    ± 0.050

    > 1.00

    ≤ 1.20

    ± 0.06

    ± 0.07

    ± 0.08

    ± 0.040

    ± 0.050

    ± 0.060

    > 1.20

    ≤ 1.60

    ± 0.08

    ± 0.09

    ± 0.10

    ± 0.050

    ± 0.060

    ± 0.070

    > 1.60

    ≤ 2.00

    ± 0.10

    ± 0.11

    ± 0.12

    ± 0.060

    ± 0.070

    ± 0.080

    > 2.00

    ≤ 2.50

    ± 0.12

    ± 0.13

    ± 0.14

    ± 0.080

    ± 0.090

    ± 0.100

    > 2.50

    ≤ 3.00

    ± 0.15

    ± 0.15

    ± 0.16

    ± 0.100

    ± 0.110

    ± 0.120

    1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness is allowed over a length of 15 metres.
    2. For special tolerances, not all combinations of thickness and width are available in every product. Please contact us for more details.

    Tolerances on thickness for steel grades with a specified minimum yield strength
    260 N/mm2 ≤ Re < 340N/mm2.

    Nominal
    thickness

    Normal tolerances for a nominal width of 1

    Special tolerances (S) for a
    nominal width of 1 2

     

    ≤ 1200

    > 1200

    > 1500

    ≤ 1200

    > 1200

    > 1500

     

    ≤ 1500

     

     

    ≤ 1500

     

    ≥ 0.35

    ≤ 0.40

    ± 0.04

    ± 0.05

    ± 0.06

    ± 0.025

    ± 0.030

    ± 0.035

    > 0.40

    ≤ 0.60

    ± 0.04

    ± 0.05

    ± 0.06

    ± 0.030

    ± 0.035

    ± 0.040

    > 0.60

    ≤ 0.80

    ± 0.05

    ± 0.06

    ± 0.07

    ± 0.035

    ± 0.040

    ± 0.050

    > 0.80

    ≤ 1.00

    ± 0.06

    ± 0.07

    ± 0.08

    ± 0.040

    ± 0.050

    ± 0.060

    > 1.00

    ≤ 1.20

    ± 0.07

    ± 0.08

    ± 0.10

    ± 0.050

    ± 0.060

    ± 0.070

    > 1.20

    ≤ 1.60

    ± 0.09

    ± 0.11

    ± 0.12

    ± 0.060

    ± 0.070

    ± 0.080

    > 1.60

    ≤ 2.00

    ± 0.12

    ± 0.13

    ± 0.14

    ± 0.070

    ± 0.080

    ± 0.100

    > 2.00

    ≤ 2.50

    ± 0.14

    ± 0.15

    ± 0.16

    ± 0.100

    ± 0.110

    ± 0.120

    > 2.50

    ≤ 3.00

    ± 0.17

    ± 0.18

    ± 0.18

    ± 0.120

    ± 0.130

    ± 0.140

    1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness is allowed over a length of 15 metres.
    2. For special tolerances, not all combinations of thickness and width are available in every product. Please contact us for more details.

    Tolerances on thickness for steel grades with a specified minimum yield strength
    340N/mm2 ≤ Re ≤ 420N/mm2.

    Nominal
    thickness

    Normal tolerances for a nominal width of 1

    Special tolerances (S) for a
    nominal width of 1 2

     

    ≤ 1200

    > 1200

    > 1500

    ≤ 1200

    > 1200

    > 1500

     

    ≤ 1500

     

     

    ≤ 1500

     

    ≥ 0.35

    ≤ 0.40

    ± 0.04

    ± 0.05

    ± 0.06

    ± 0.030

    ± 0.035

    ± 0.040

    > 0.40

    ≤ 0.60

    ± 0.05

    ± 0.06

    ± 0.07

    ± 0.035

    ± 0.040

    ± 0.050

    > 0.60

    ≤ 0.80

    ± 0.06

    ± 0.07

    ± 0.08

    ± 0.040

    ± 0.050

    ± 0.060

    > 0.80

    ≤ 1.00

    ± 0.07

    ± 0.08

    ± 0.10

    ± 0.050

    ± 0.060

    ± 0.070

    > 1.00

    ≤ 1.20

    ± 0.09

    ± 0.10

    ± 0.11

    ± 0.060

    ± 0.070

    ± 0.080

    > 1.20

    ≤ 1.60

    ± 0.11

    ± 0.12

    ± 0.14

    ± 0.070

    ± 0.080

    ± 0.100

    > 1.60

    ≤ 2.00

    ± 0.14

    ± 0.15

    ± 0.17

    ± 0.080

    ± 0.100

    ± 0.110

    > 2.00

    ≤ 2.50

    ± 0.16

    ± 0.18

    ± 0.19

    ± 0.110

    ± 0.120

    ± 0.130

    > 2.50

    ≤ 3.00

    ± 0.20

    ± 0.20

    ± 0.21

    ± 0.130

    ± 0.140

    ± 0.150

    1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness is allowed over a length of 15 metres.
    2. For special tolerances, not all combinations of thickness and width are available in every product. Please contact us for more details.

    Tolerances on thickness for steel grades with a specified minimum yield strength
    Re > 420N/mm2.

    Nominal
    thickness

    Normal tolerances for a nominal width of 1

    Special tolerances (S) for a
    nominal width of 1 2

     

    ≤ 1200

    > 1200

    > 1500

    ≤ 1200

    > 1200

    > 1500

     

    ≤ 1500

     

     

    ≤ 1500

     

    ≥ 0.35

    ≤ 0.40

    ± 0.05

    ± 0.06

    ± 0.07

    ± 0.035

    ± 0.040

    ± 0.050

    > 0.40

    ≤ 0.60

    ± 0.05

    ± 0.07

    ± 0.08

    ± 0.040

    ± 0.050

    ± 0.060

    > 0.60

    ≤ 0.80

    ± 0.06

    ± 0.08

    ± 0.10

    ± 0.050

    ± 0.060

    ± 0.070

    > 0.80

    ≤ 1.00

    ± 0.08

    ± 0.10

    ± 0.11

    ± 0.060

    ± 0.070

    ± 0.080

    > 1.00

    ≤ 1.20

    ± 0.10

    ± 0.11

    ± 0.13

    ± 0.070

    ± 0.080

    ± 0.100

    > 1.20

    ≤ 1.60

    ± 0.13

    ± 0.14

    ± 0.16

    ± 0.080

    ± 0.100

    ± 0.110

    > 1.60

    ≤ 2.00

    ± 0.16

    ± 0.17

    ± 0.19

    ± 0.100

    ± 0.110

    ± 0.130

    > 2.00

    ≤ 2.50

    ± 0.19

    ± 0.20

    ± 0.22

    ± 0.130

    ± 0.140

    ± 0.160

    > 2.50

    ≤ 3.00

    ± 0.22

    ± 0.23

    ± 0.24

    ± 0.160

    ± 0.170

    ± 0.180

    1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness is allowed over a length of 15 metres.
    2. For special tolerances, not all combinations of thickness and width are available in every product. Please contact us for more details.

    Tolerances on width

     Tolerance
    (EN 10131: 2006)

    Availability

    Normal width tolerances

    Available

    Special width tolerances

    Refer (± 0.25mm available
    on 750 - 2000mm width)

     

    Nominal width

    Normal tolerances

    Special tolerances (S)

     

     

    Under

    Over

    Under

    Over

    ≤ 1200

     

    0

    4

    0

    2

    > 1200

    ≤ 1500

    0

    5

    0

    2

    > 1500

     

    0

    6

    0

    3

     

    Out-of-squareness (products supplied as cut sheets only)

    The deviation does not exceed 1% of the actual width of the sheet according to the EN 10131: 2006 standard. The deviation from the edge camber does not exceed 5mm for a length of 2 metres as specified in EN 10131: 2006.

    Flatness (products supplied as skin-passed cut sheets only)

    Flatness complies with EN 10131: 2006

    If there is a dispute about the flatness of material that was ordered to the special tolerances shown in table 8 of EN 10131: 2006, then the minimum acceptable standards of flatness described below must be verified.

    Criteria in case of disputes over special (FS) flatness tolerances (ReL < 260 N/mm2)

    Dimensions in mm.

    Nominal width

    Edge-wave length

    Maximum acceptable wave height

    < 1500

    > 200

    < 1% of edge-wave length

    ≥ 1500

    > 200

    < 1.5% of edge-wave length

    < 200

     2mm

     

    Winding

    For winding, there may be a maximum width gap of 3mm between two con­se­cutive windings. The total width stagger across the coil wall will not exceed 10mm.

    Dimensions and coil weights

    Tata Steel can supply cold-rolled steel with the following minimum and maximum dimensions and coil weights.

    DescriptionAvailability
    Coil diameter inner 610 mm
    (508 mm available on request)
    Coil diameter outer 10/7 x width max
    1000 mm min.
    2800 mm max.
    Coil weight 30 t max.
    30 - 45 t max available after consultation
    Coil weight limited by maximum outer diameter
    Maximum weight allowed by road/rail transport
    Some products may have different coil weight ranges available
    Usually a minimum coil weight up to 85% of the maximum coil weight can be requested
    KIM: width ≤ 1200 mm 14.5 - 21 kg/mm width
    KIM: 1200mm < width ≤ 1700 mm 14.5 - 21 kg/mm width
    KIM: width > 1700 mm 10.3 kg/mm width and 14.5 - 21 kg/mm width
    Minimum tonnage per order Refer to price list for order quantity details
    Minimum order quantities may apply

    Coil welds

    For batch-annealed coils, in general, pickling line welds are included. The number of permissible recoiling line welds is determined in consultation with the customer. If welds are permitted, Tata Steel is better able to implement the best coil weight. A recoiling line weld is marked with a single hole in the centre of the strip, close to the weld. On request the identifying hole can be left out. Coils with welds are available on continuously-annealed products – please contact us for details.

     

    back to top

    Overview

    Overview

     

    Our cold-rolled products are tailored to deliver the optimum in structural and safety performance in conjunction with our services for lightweighting and cost reduction. We place special emphasis on meeting the Class A surface finish requirements of our customers.

    Coupled with consistent quality, our wide product selection provides opportunities for you to optimise both your products and processes.The benefits of our cold-rolled steel include:

    • consistent and reliable end product quality
    • lighter and stronger products
    • repeatable, trouble-free processing
    • maximised yield
    • reduced waste and rework

    Applications

    Body and closure panels
    Interior and trim
    Automotive components

    Grades

    This section of the catalogue shows the grades of cold-rolled steel offered by Tata Steel. These include grades for forming, high-strength steels and advanced and ultra high-strength steels.

    Supply – product conditions

    We supply cold-rolled steel in the following conditions:

    • annealed and skin-passed
    • full hard
    • sheets, discs and slit wide coil

    Tata Steel produces cold-rolled and annealed strip by either the
    continuously-annealed (CA) or batch- annealed (BA) processes.

     

    back to top

    Surface aspects

    Surface quality

     

    Surface quality A

    Defects that do not influence the formability or the application of surface coatings are permitted. They are defects such as pores, minor scratches, slight indentations, small grooves or slight discolouration.

    Surface quality B

    The better side must be free of defects that can spoil the uniform appearance of a high-quality paint or of an electrolytic coating. The other side must at least conform to surface quality A. Not all combinations of thickness and width are available in surface quality B. Please contact us for details.

    Inspected side

    As a rule, the upper side of the strip is inspected; on request, the strip can be wound so that the inspected side is the underside.

    Surface texture/roughness

    Cold-rolled annealed and skin-passed steel is available in several surface textures. Unless specified otherwise, Tata Steel will supply normal roughness. The table below shows the range of surface textures according to EN 10130: 2006.

     

     

    Roughness Ra
    (µm)

    EN 10130: 2006 Grade

    Symbol

    cut off 0.8 mm

    extra-bright 1

    -

    ≤ 0.30

    bright

    b

    ≤ 0.4

    semi-bright

    g

    ≤ 0.9

    normal

    m

    0.6 - 1.9

    rough

    r

    > 1.6

    extra rough 1

    -

    > 2.5

    1. Not in EN 10130: 2006 - Tata Steel’s own specification.
    Other surface textures are available to meet your requirements - please contact us for details.

    Preservative oil

    The standard oil applied by Tata Steel acts as a protective coating. Other types of oil may be available to meet your requirement.

    Tata Steel offers a range of oiling levels from

    • 0.4 - 1.7 g/m2 per side from Tata Steel in the UK
    • 0.25 - 1.7 g/m2 per side from Tata Steel in the Netherlands.

    Other oiling levels are available on request. Tata Steel is not responsible for the risk of corrosion during storage or shipment if material is ordered in the un-oiled condition.

     

    Surface cleanliness

    Tata Steel can guarantee improved surface cleanliness on request for batch-annealed products. The cleanliness is tested with a tape test, in which the loss of reflection is measured. The reflection gives an indication of the oil residue on the annealed product. Two levels of loss of reflectivity are available for batch annealed products: a maximum of 20% or a maximum of 30%. Continuously-annealed products typically exhibit a loss of reflection up to around 10%.

     

    back to top

    Shape and dimensional tolerances

    Shape and dimensional tolerances

     

    Tolerances on shape and dimensions comply with standard EN 10131: 2006

    Tolerances on thickness

    Tolerance (EN 10131: 2006)

    Availability

    Full thickness tolerance

    Available

    Special thickness tolerances

    Available

    50% of full thickness tolerance

    Refer before ordering

    Tolerances closer than special tolerances may be agreed at the time of enquiry.
    Tolerances in mm.

    Tolerances on thickness for steel grades with a specified minimum yield strength
    Re < 260N/mm2.

    Nominal
    thickness

    Normal tolerances for a nominal width of 1

    Special tolerances (S) for a
    nominal width of 1 2

     

    ≤ 1200

    > 1200

    > 1500

    ≤ 1200

    > 1200

    > 1500

     

    ≤ 1500

     

     

    ≤ 1500

     

    ≥ 0.35

    ≤ 0.40

    ± 0.03

    ± 0.04

    ± 0.05

    ± 0.020

    ± 0.025

    ± 0.030

    > 0.40

    ≤ 0.60

    ± 0.03

    ± 0.04

    ± 0.05

    ± 0.025

    ± 0.030

    ± 0.035

    > 0.60

    ≤ 0.80

    ± 0.04

    ± 0.05

    ± 0.06

    ± 0.030

    ± 0.035

    ± 0.040

    > 0.80

    ≤ 1.00

    ± 0.05

    ± 0.06

    ± 0.07

    ± 0.035

    ± 0.040

    ± 0.050

    > 1.00

    ≤ 1.20

    ± 0.06

    ± 0.07

    ± 0.08

    ± 0.040

    ± 0.050

    ± 0.060

    > 1.20

    ≤ 1.60

    ± 0.08

    ± 0.09

    ± 0.10

    ± 0.050

    ± 0.060

    ± 0.070

    > 1.60

    ≤ 2.00

    ± 0.10

    ± 0.11

    ± 0.12

    ± 0.060

    ± 0.070

    ± 0.080

    > 2.00

    ≤ 2.50

    ± 0.12

    ± 0.13

    ± 0.14

    ± 0.080

    ± 0.090

    ± 0.100

    > 2.50

    ≤ 3.00

    ± 0.15

    ± 0.15

    ± 0.16

    ± 0.100

    ± 0.110

    ± 0.120

    1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness is allowed over a length of 15 metres.
    2. For special tolerances, not all combinations of thickness and width are available in every product. Please contact us for more details.

    Tolerances on thickness for steel grades with a specified minimum yield strength
    260 N/mm2 ≤ Re < 340N/mm2.

    Nominal
    thickness

    Normal tolerances for a nominal width of 1

    Special tolerances (S) for a
    nominal width of 1 2

     

    ≤ 1200

    > 1200

    > 1500

    ≤ 1200

    > 1200

    > 1500

     

    ≤ 1500

     

     

    ≤ 1500

     

    ≥ 0.35

    ≤ 0.40

    ± 0.04

    ± 0.05

    ± 0.06

    ± 0.025

    ± 0.030

    ± 0.035

    > 0.40

    ≤ 0.60

    ± 0.04

    ± 0.05

    ± 0.06

    ± 0.030

    ± 0.035

    ± 0.040

    > 0.60

    ≤ 0.80

    ± 0.05

    ± 0.06

    ± 0.07

    ± 0.035

    ± 0.040

    ± 0.050

    > 0.80

    ≤ 1.00

    ± 0.06

    ± 0.07

    ± 0.08

    ± 0.040

    ± 0.050

    ± 0.060

    > 1.00

    ≤ 1.20

    ± 0.07

    ± 0.08

    ± 0.10

    ± 0.050

    ± 0.060

    ± 0.070

    > 1.20

    ≤ 1.60

    ± 0.09

    ± 0.11

    ± 0.12

    ± 0.060

    ± 0.070

    ± 0.080

    > 1.60

    ≤ 2.00

    ± 0.12

    ± 0.13

    ± 0.14

    ± 0.070

    ± 0.080

    ± 0.100

    > 2.00

    ≤ 2.50

    ± 0.14

    ± 0.15

    ± 0.16

    ± 0.100

    ± 0.110

    ± 0.120

    > 2.50

    ≤ 3.00

    ± 0.17

    ± 0.18

    ± 0.18

    ± 0.120

    ± 0.130

    ± 0.140

    1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness is allowed over a length of 15 metres.
    2. For special tolerances, not all combinations of thickness and width are available in every product. Please contact us for more details.

    Tolerances on thickness for steel grades with a specified minimum yield strength
    340N/mm2 ≤ Re ≤ 420N/mm2.

    Nominal
    thickness

    Normal tolerances for a nominal width of 1

    Special tolerances (S) for a
    nominal width of 1 2

     

    ≤ 1200

    > 1200

    > 1500

    ≤ 1200

    > 1200

    > 1500

     

    ≤ 1500

     

     

    ≤ 1500

     

    ≥ 0.35

    ≤ 0.40

    ± 0.04

    ± 0.05

    ± 0.06

    ± 0.030

    ± 0.035

    ± 0.040

    > 0.40

    ≤ 0.60

    ± 0.05

    ± 0.06

    ± 0.07

    ± 0.035

    ± 0.040

    ± 0.050

    > 0.60

    ≤ 0.80

    ± 0.06

    ± 0.07

    ± 0.08

    ± 0.040

    ± 0.050

    ± 0.060

    > 0.80

    ≤ 1.00

    ± 0.07

    ± 0.08

    ± 0.10

    ± 0.050

    ± 0.060

    ± 0.070

    > 1.00

    ≤ 1.20

    ± 0.09

    ± 0.10

    ± 0.11

    ± 0.060

    ± 0.070

    ± 0.080

    > 1.20

    ≤ 1.60

    ± 0.11

    ± 0.12

    ± 0.14

    ± 0.070

    ± 0.080

    ± 0.100

    > 1.60

    ≤ 2.00

    ± 0.14

    ± 0.15

    ± 0.17

    ± 0.080

    ± 0.100

    ± 0.110

    > 2.00

    ≤ 2.50

    ± 0.16

    ± 0.18

    ± 0.19

    ± 0.110

    ± 0.120

    ± 0.130

    > 2.50

    ≤ 3.00

    ± 0.20

    ± 0.20

    ± 0.21

    ± 0.130

    ± 0.140

    ± 0.150

    1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness is allowed over a length of 15 metres.
    2. For special tolerances, not all combinations of thickness and width are available in every product. Please contact us for more details.

    Tolerances on thickness for steel grades with a specified minimum yield strength
    Re > 420N/mm2.

    Nominal
    thickness

    Normal tolerances for a nominal width of 1

    Special tolerances (S) for a
    nominal width of 1 2

     

    ≤ 1200

    > 1200

    > 1500

    ≤ 1200

    > 1200

    > 1500

     

    ≤ 1500

     

     

    ≤ 1500

     

    ≥ 0.35

    ≤ 0.40

    ± 0.05

    ± 0.06

    ± 0.07

    ± 0.035

    ± 0.040

    ± 0.050

    > 0.40

    ≤ 0.60

    ± 0.05

    ± 0.07

    ± 0.08

    ± 0.040

    ± 0.050

    ± 0.060

    > 0.60

    ≤ 0.80

    ± 0.06

    ± 0.08

    ± 0.10

    ± 0.050

    ± 0.060

    ± 0.070

    > 0.80

    ≤ 1.00

    ± 0.08

    ± 0.10

    ± 0.11

    ± 0.060

    ± 0.070

    ± 0.080

    > 1.00

    ≤ 1.20

    ± 0.10

    ± 0.11

    ± 0.13

    ± 0.070

    ± 0.080

    ± 0.100

    > 1.20

    ≤ 1.60

    ± 0.13

    ± 0.14

    ± 0.16

    ± 0.080

    ± 0.100

    ± 0.110

    > 1.60

    ≤ 2.00

    ± 0.16

    ± 0.17

    ± 0.19

    ± 0.100

    ± 0.110

    ± 0.130

    > 2.00

    ≤ 2.50

    ± 0.19

    ± 0.20

    ± 0.22

    ± 0.130

    ± 0.140

    ± 0.160

    > 2.50

    ≤ 3.00

    ± 0.22

    ± 0.23

    ± 0.24

    ± 0.160

    ± 0.170

    ± 0.180

    1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness is allowed over a length of 15 metres.
    2. For special tolerances, not all combinations of thickness and width are available in every product. Please contact us for more details.

    Tolerances on width

     Tolerance
    (EN 10131: 2006)

    Availability

    Normal width tolerances

    Available

    Special width tolerances

    Refer (± 0.25mm available
    on 750 - 2000mm width)

     

    Nominal width

    Normal tolerances

    Special tolerances (S)

     

     

    Under

    Over

    Under

    Over

    ≤ 1200

     

    0

    4

    0

    2

    > 1200

    ≤ 1500

    0

    5

    0

    2

    > 1500

     

    0

    6

    0

    3

     

    Out-of-squareness (products supplied as cut sheets only)

    The deviation does not exceed 1% of the actual width of the sheet according to the EN 10131: 2006 standard. The deviation from the edge camber does not exceed 5mm for a length of 2 metres as specified in EN 10131: 2006.

    Flatness (products supplied as skin-passed cut sheets only)

    Flatness complies with EN 10131: 2006

    If there is a dispute about the flatness of material that was ordered to the special tolerances shown in table 8 of EN 10131: 2006, then the minimum acceptable standards of flatness described below must be verified.

    Criteria in case of disputes over special (FS) flatness tolerances (ReL < 260 N/mm2)

    Dimensions in mm.

    Nominal width

    Edge-wave length

    Maximum acceptable wave height

    < 1500

    > 200

    < 1% of edge-wave length

    ≥ 1500

    > 200

    < 1.5% of edge-wave length

    < 200

     2mm

     

    Winding

    For winding, there may be a maximum width gap of 3mm between two con­se­cutive windings. The total width stagger across the coil wall will not exceed 10mm.

    Dimensions and coil weights

    Tata Steel can supply cold-rolled steel with the following minimum and maximum dimensions and coil weights.

    DescriptionAvailability
    Coil diameter inner 610 mm
    (508 mm available on request)
    Coil diameter outer 10/7 x width max
    1000 mm min.
    2800 mm max.
    Coil weight 30 t max.
    30 - 45 t max available after consultation
    Coil weight limited by maximum outer diameter
    Maximum weight allowed by road/rail transport
    Some products may have different coil weight ranges available
    Usually a minimum coil weight up to 85% of the maximum coil weight can be requested
    KIM: width ≤ 1200 mm 14.5 - 21 kg/mm width
    KIM: 1200mm < width ≤ 1700 mm 14.5 - 21 kg/mm width
    KIM: width > 1700 mm 10.3 kg/mm width and 14.5 - 21 kg/mm width
    Minimum tonnage per order Refer to price list for order quantity details
    Minimum order quantities may apply

    Coil welds

    For batch-annealed coils, in general, pickling line welds are included. The number of permissible recoiling line welds is determined in consultation with the customer. If welds are permitted, Tata Steel is better able to implement the best coil weight. A recoiling line weld is marked with a single hole in the centre of the strip, close to the weld. On request the identifying hole can be left out. Coils with welds are available on continuously-annealed products – please contact us for details.

     

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