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  • Metallic coated (US standard units)

    Tata Steel offers a wide choice of metallic coated steel.

    Our product line comprises forming and structural grades and high-strength and advanced high-strength steels. Our steels deliver benefits including weight savings and improved component performance.

    • Metallic coated steel - Magizinc®

      MagiZinc® improves corrosion resistance with half the thickness of conventional zinc coatings, increasing yield, reducing cost and facilitating stronger, lighter products.

      It offers improved automotive corrosion protection and higher process efficiency.

    • Metallic coated - advanced high-strength steel

      Our ultra-high strength steel grades for automotive applications, such as HyperForm®, are lightweight and offer design freedom for complex parts. Their high yield and ductility ensure shape accuracy and tolerancing, which enable maintained in-service performance for difficult-to-form parts.

    Tata Steel

    Chicago office

    475 N. Martingale Road, Suite 400

    Schaumburg, IL 60173

    T +1 847 619 0400 or 1800 542 6244 (N.America only)

    F +1 847 619 0468

    Overview

    You can choose from a range of metallic coatings including Tata Steel’s innovative MagiZinc® coating. MagiZinc® delivers improved corrosion resistance with up to half the thickness of a conventional zinc coating. The thinner, lighter coating means increased yield per tonne of steel.

    The main benefits of our metallic coated steel include:

    • consistent and reliable end-product quality
    • proven corrosion resistance for extended product life
    • opportunities to produce stronger, lighter products
    • repeatable, trouble-free processing
    • maximized yield

    Applications

    • Agricultural machinery and components
    • Automotive components
    • Construction and building components
    • Domestic appliances
    • Drain pipes, tubes and sections
    • Electrical goods
    • Machinery

     

    Grades

    Metallic coated grades include advanced high-strength steels, high-strength steels, structural steels and grades for forming.

    Coating weight

    Coating

    Minimum

    Maximum

    Pure zinc (Z)

    .33 (275 µinch/side)

    2 (1653 µinch/side)

    Zinc-iron (ZF)

    .33 (275 µinch/side)

    .46 (393 µinch/side)

    MagiZinc® (ZMA)

    .33 (275 µinch/side)

    .66 (551 µinch/side)

    Coating weight measured in oz/ft2 double-sided (µm, per side)
    Coils with coatings > 1.16 oz/ft2 produced in the Netherlands will be supplied in oscillated coiled condition.
    Coils coated with 2 oz/ft2 and produced in the Netherlands are only available in width range 38 to 51 inch.

     

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    Surface Aspects

    Surface quality

    Surface quality complies with ASTM standards A653: 2008 and A924: 2009.
    The products can be delivered with the following coating/surface types:

    Minimized spangle (standard surface)

    Imperfections such as pimples, marks, scratches, pits, variations in surface appearance, dark spots, stripe marks and light passivation stains are permissible.

    Stretch levelling breaks or run-off marks may appear. Coil breaks and stretcher strains may also appear.

    Minimized spangle temper rolled (improved surface)

    With this surface quality, small imperfections such as stretch levelling breaks,
    skin pass marks, slight scratches, indentations, surface structure, zinc run-off marks and light passivation stains are permissible.

    Extra smooth (best surface, exposed)

    Surface quality is obtained by skin passing. The controlled surface shall make it possible to apply a uniform high-class paint finish. The other surface shall at least have the characteristics of surface quality B. As a rule, the upper side of the strip is inspected; on request the strip can be turned over so that the underside is the inspected side.

    MagiZinc® is currently only available with standard or improved surface qualities.

     

    Surface roughness

    Metallic coated steel will normally be supplied with a regular matte finish:

    Description

    Roughness µinch CLA

    regular matte

    30 - 61

     

    Surface treatments

    The surface treatments available are O, C and CO.

    Oiling (O)

    The material surface can be oiled with preservative oil. Other types of oil may be available to meet your requirement – please contact us.

    Tata Steel offers the following range of oiling levels for all coating types:

    Lightly oiled:  55 mg/ft2 per side
    Regular oiled:  110 mg/ft2 per side

    Other oiling levels are available on request. If no amount is indicated in your specification, a regular amount of oil will be applied.

    Chromium-free passivation (C)

    This surface treatment temporarily protects the zinc coated material against
    white rust during transportation and storage (not applicable to all qualities – please consult us).

    Chromium-free passivation and oiled (CO)

    Please request this combination of surface treatments if you require extra protection against white rust formation (not applicable to all qualities – please consult us).

    Chromate passivation

    Tata Steel currently offers a chromate passivation treatment. This will be withdrawn in the near future (due to REACH legislation) and customers are strongly advised to consider an alternative surface treatment.

    Please contact us on the availability of other surface treatments.

     

     

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    Shape and dimension tolerances

    Tolerances on thickness

    The thickness tolerances comply with standard ASTM A924: 2013 – 1 inch minimum edge distance.
    Thickness tolerances over, no tolerance under. Dimensions in inches:

    Specified thickness

    Normal tolerances for a specified width of

    From - up to

    0 - 32

    32 - 40

    40 - 60

    60 - 75

    0.000 - 0.023

    0.003

    0.003

    0.003

    0.003

    0.023 - 0.043

    0.004

    0.004

    0.004

    0.004

    0.043 - 0.061

    0.005

    0.005

    0.005

    0.005

    0.061 - 0.075

    0.006

    0.006

    0.006

    0.006

    0.075 - 0.101

    0.010

    0.012

    0.012

    0.014

    0.101 - 0.187

    0.012

    0.012

    0.014

    0.014

    Around cold-rolled welds an increase of 20 % at the most over the thickness tolerance is allowed over a length of 50 ft.

    Thickness tolerance availability is shown below:

    Thickness tolerance

    Availability

    Full thickness tolerance

    Available

    Special thickness tolerance

    Refer before ordering

    50% of full thickness tolerance

    Refer before ordering

     

    Tolerances on width

    The tolerances for width comply with standard ASTM A924: 2013.
    Thickness tolerances over, no tolerance under.  Dimensions in inches:

    Specified width

    Tolerances for a specified width of

    From - up to

    Mill edge

    Cut edge

    30 - 48

    0.71

    0.187

    48 - 60

    0.71

    0.25

    60 - 75

    0.71

    0.312

    MagiZinc® is not included in the standard. Tighter tolerances are available on request.

     

    Dimensions and coil weights

    Description

    Capabilities

    Inside diameter

    standard 24 inches, 20 inches on request

    Outside diameter

    maximum 98 inches and at the most
    10/7 x width

    Coil weight

    maximum 66.000 lbs.

    PIW: width ≤ 47

    868 - 1232 PIW

    PIW: 47 inch < width ≤ 67 inch

    868 - 1215 PIW

    PIW: width > 67 inch

    616 PIW and 868 - 1215 PIW

     

    Coating layer

    Coating layer

    Coating weight
    total both sides
    oz/ft2

    G30

    0.30

    G35 1

    0.35

    G40

    0.40

    G60

    0.60

    G75 1

    0.75

    G90

    0.90

    G115

    1.15

    1. not in ASTM A653: 2008.
    Other coating weights are available. Please contact us to discuss your requirements.

     

     

    back to top

    Overview

    Overview

    You can choose from a range of metallic coatings including Tata Steel’s innovative MagiZinc® coating. MagiZinc® delivers improved corrosion resistance with up to half the thickness of a conventional zinc coating. The thinner, lighter coating means increased yield per tonne of steel.

    The main benefits of our metallic coated steel include:

    • consistent and reliable end-product quality
    • proven corrosion resistance for extended product life
    • opportunities to produce stronger, lighter products
    • repeatable, trouble-free processing
    • maximized yield

    Applications

    • Agricultural machinery and components
    • Automotive components
    • Construction and building components
    • Domestic appliances
    • Drain pipes, tubes and sections
    • Electrical goods
    • Machinery

     

    Grades

    Metallic coated grades include advanced high-strength steels, high-strength steels, structural steels and grades for forming.

    Coating weight

    Coating

    Minimum

    Maximum

    Pure zinc (Z)

    .33 (275 µinch/side)

    2 (1653 µinch/side)

    Zinc-iron (ZF)

    .33 (275 µinch/side)

    .46 (393 µinch/side)

    MagiZinc® (ZMA)

    .33 (275 µinch/side)

    .66 (551 µinch/side)

    Coating weight measured in oz/ft2 double-sided (µm, per side)
    Coils with coatings > 1.16 oz/ft2 produced in the Netherlands will be supplied in oscillated coiled condition.
    Coils coated with 2 oz/ft2 and produced in the Netherlands are only available in width range 38 to 51 inch.

     

    back to top

    Surface aspects

    Surface Aspects

    Surface quality

    Surface quality complies with ASTM standards A653: 2008 and A924: 2009.
    The products can be delivered with the following coating/surface types:

    Minimized spangle (standard surface)

    Imperfections such as pimples, marks, scratches, pits, variations in surface appearance, dark spots, stripe marks and light passivation stains are permissible.

    Stretch levelling breaks or run-off marks may appear. Coil breaks and stretcher strains may also appear.

    Minimized spangle temper rolled (improved surface)

    With this surface quality, small imperfections such as stretch levelling breaks,
    skin pass marks, slight scratches, indentations, surface structure, zinc run-off marks and light passivation stains are permissible.

    Extra smooth (best surface, exposed)

    Surface quality is obtained by skin passing. The controlled surface shall make it possible to apply a uniform high-class paint finish. The other surface shall at least have the characteristics of surface quality B. As a rule, the upper side of the strip is inspected; on request the strip can be turned over so that the underside is the inspected side.

    MagiZinc® is currently only available with standard or improved surface qualities.

     

    Surface roughness

    Metallic coated steel will normally be supplied with a regular matte finish:

    Description

    Roughness µinch CLA

    regular matte

    30 - 61

     

    Surface treatments

    The surface treatments available are O, C and CO.

    Oiling (O)

    The material surface can be oiled with preservative oil. Other types of oil may be available to meet your requirement – please contact us.

    Tata Steel offers the following range of oiling levels for all coating types:

    Lightly oiled:  55 mg/ft2 per side
    Regular oiled:  110 mg/ft2 per side

    Other oiling levels are available on request. If no amount is indicated in your specification, a regular amount of oil will be applied.

    Chromium-free passivation (C)

    This surface treatment temporarily protects the zinc coated material against
    white rust during transportation and storage (not applicable to all qualities – please consult us).

    Chromium-free passivation and oiled (CO)

    Please request this combination of surface treatments if you require extra protection against white rust formation (not applicable to all qualities – please consult us).

    Chromate passivation

    Tata Steel currently offers a chromate passivation treatment. This will be withdrawn in the near future (due to REACH legislation) and customers are strongly advised to consider an alternative surface treatment.

    Please contact us on the availability of other surface treatments.

     

     

    back to top

    Shape and dimensional tolerances

    Shape and dimension tolerances

    Tolerances on thickness

    The thickness tolerances comply with standard ASTM A924: 2013 – 1 inch minimum edge distance.
    Thickness tolerances over, no tolerance under. Dimensions in inches:

    Specified thickness

    Normal tolerances for a specified width of

    From - up to

    0 - 32

    32 - 40

    40 - 60

    60 - 75

    0.000 - 0.023

    0.003

    0.003

    0.003

    0.003

    0.023 - 0.043

    0.004

    0.004

    0.004

    0.004

    0.043 - 0.061

    0.005

    0.005

    0.005

    0.005

    0.061 - 0.075

    0.006

    0.006

    0.006

    0.006

    0.075 - 0.101

    0.010

    0.012

    0.012

    0.014

    0.101 - 0.187

    0.012

    0.012

    0.014

    0.014

    Around cold-rolled welds an increase of 20 % at the most over the thickness tolerance is allowed over a length of 50 ft.

    Thickness tolerance availability is shown below:

    Thickness tolerance

    Availability

    Full thickness tolerance

    Available

    Special thickness tolerance

    Refer before ordering

    50% of full thickness tolerance

    Refer before ordering

     

    Tolerances on width

    The tolerances for width comply with standard ASTM A924: 2013.
    Thickness tolerances over, no tolerance under.  Dimensions in inches:

    Specified width

    Tolerances for a specified width of

    From - up to

    Mill edge

    Cut edge

    30 - 48

    0.71

    0.187

    48 - 60

    0.71

    0.25

    60 - 75

    0.71

    0.312

    MagiZinc® is not included in the standard. Tighter tolerances are available on request.

     

    Dimensions and coil weights

    Description

    Capabilities

    Inside diameter

    standard 24 inches, 20 inches on request

    Outside diameter

    maximum 98 inches and at the most
    10/7 x width

    Coil weight

    maximum 66.000 lbs.

    PIW: width ≤ 47

    868 - 1232 PIW

    PIW: 47 inch < width ≤ 67 inch

    868 - 1215 PIW

    PIW: width > 67 inch

    616 PIW and 868 - 1215 PIW

     

    Coating layer

    Coating layer

    Coating weight
    total both sides
    oz/ft2

    G30

    0.30

    G35 1

    0.35

    G40

    0.40

    G60

    0.60

    G75 1

    0.75

    G90

    0.90

    G115

    1.15

    1. not in ASTM A653: 2008.
    Other coating weights are available. Please contact us to discuss your requirements.

     

     

    back to top