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  • Hot-rolled - Floor plate (US Standard units)

    Durbar® is hot-rolled structural steel floor plate which can reduce construction costs.

    Durbar®’s distinctive, raised surface pattern is extremely slip-resistant at all angles – allowing plates to be used in any direction. Its self-draining surface is easy to clean and reduces corrosion.

    Proven Slip Resistance
    Durbar has extremely low slip potential in the dry state and low slip potential even when wet. This is because of the unique diamond pattern which is 23% deeper than leading competitors with 10% more studs.

    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

    Durbar is hot-rolled structural steel floor plate offering distinct benefits. It combines structural integrity with appealing features designed for easy use and long life. Durbar helps reduce construction costs by eliminating the need for separate structural and flooring components. Its distinctive, raised surface pattern is extremely slip resistant at all angles – allowing plates to be used in any direction. The raised pattern creates a self-draining surface. This is easy to clean and reduces corrosion for extended product life.

    Applications

    • Bridges
    • Cladding and protective barriers
    • Commercial vehicles
    • Containers
    • Lifts
    • Offshore installations
    • Shipbuilding
    • Stairs and walkways
    • Steps and safety platforms

    Relationship with standards

    Durbar meets the mechanical and chemical properties of ASTM A1011 and A1018 structural grades.
    Durbar meets the floor plate specification ASTM A786. 

    Properties

    Mechanical properties

    The mechanical properties of Durbar comply with ASTM A1011 or ASTM A1018 and are shown in the table below.
    The values shown for strength and elongation are for test pieces taken transverse to the rolling direction; those for the impact test are for test pieces taken in the rolling direction. 

    ASTM A1011-15
    ASTM A1018-16

    Min. yield strength

    Tensile strength

    Min. elongation after fracture A (%)

    Grade

    ksi

    ksi

    L0 = 2 inch

     

     

     

     t < 0.064

    0.064 ≤ t < 0.097

    0.097 ≤ t < 0.23

    0.23 ≤ t

    SS Grade 33

    33

    52

    18

    22

    23

    22

    SS Grade 40

    40

    55

    15

    20

    21

    19

    SS Grade 50

    50

    65

    11

    16

    17

    -

    t - material thickness in mm.

     

    Chemical composition

    The chemical composition of Durbar complies with ASTM A1011 and A1018 and is shown in the table below. 

     

    C

    Mn

    P

    S

    Si

    N

    Grade

    Max.

    Max.

    Max.

    Max.

    Max.

    Max.

    SS Grade 33

    0.25

    0.90

    0.035

    0.04

    -

    SS Grade 40

    0.25

    0.90

    0.035

    0.04

    -

    SS Grade 50

    0.25

    1.35

    0.035

    0.04

    -

    All values are in weight %.

     

    Dimensions

    Dimensional capability for non pickled steel.

    Dimensions in inch. 

    Thickness

    Standard Width

     

    SS Grade 33

    SS Grade 40

    SS Grade 50

    0.118

    49

    49

    49

    0.177

    59

    59

    59

    0.236

    59

    59

    -

    0.315

    59

    59

    -

    0.394

    59

    59

    -

    0.492

    59

    59

    -

    Widths of 39 inch (minimum) and 72 inch are also available – please contact us.
    Please also consult us on any other dimensions or grades.

     

    Tolerances on thickness

    Tolerances for wide strip and slit wide strip comply with standard ASTM A568: 2007 and A635: 2007 (click here).
    Tighter tolerances are available, please contact us. Tolerances are over, no under.

     

    back to top
     

    Frequently Asked Questions (FAQs)

     

    What is the fire resistance of Durbar?

    Durbar hot rolled steel floor plate is classed as non-combustible. When subjected to extreme heat, Durbar has distinct advantages over some other flooring materials. At temperatures where aluminium alloys have already begun to melt, Durbar steel floor plate will still be supporting design loads. The fire performance of an assembly is specific to the construction of that assembly and so we strongly recommend you check your fire rating with a qualified fire engineer.

     

    What is the slip resistance of Durbar?

    Durbar has been tested to BS 7976-2:2002 for slip resistance and found to have Extremely Low slip potential in the dry state and Low slip potential even when wet. The unique Durbar pattern ensures this optimised slip resistance and in comparison tests, competitors’ floor plate products display a lower slip resistance.

     

    Will galvanising and painting Durbar affect it’s characteristics?

    Independent testing, in both wet and dry conditions in accordance with BS7976-2 assessed as-supplied Durbar as extremely low slip when dry, and low slip when wet. Moreover, Durbar is self-draining.

    Galvanising and/or painting will alter the surface condition,  and thus the slip resistance – we suggest you  should consult the paint manufacturer for details of appropriate paint systems.

     

    Can Tata Steel provide calculations for my specific use case of Durbar?

    Durbar is stronger than ordinary mild steels, easily fabricated, and therefore well suited to performing a structural role efficiently. We provide load capacity tables for typical configurations of Durbar in the Design section of this web-page, which cover a range of representative cases. For specific use cases, we recommend that you consult an independent design engineer.

     

    Can I buy individual sheets of Durbar from Tata Steel?

    We manufacture Durbar in coil form and can supply both coil and cut sheet. We are the largest distributor in the UK of Durbar in a cut-sheet format. We supply Durbar sheet to an extensive range of local stockists that can provide product in appropriate sizes and quantities for specific end use requirements and projects

     
    Is Durbar a sustainable choice?

    Durbar is a structurally efficient choice for slip-resistant, hard-wearing and long-lasting flooring. Compared to some alternatives, less supporting structure is required. Durbar itself is 100% truly recyclable steel – indeed every sheet of Durbar includes a significant proportion of recycled steel.

    Durbar has been in use in structures for over 50 years and remains the benchmark in textured floorplate in the UK – the ability to match the pattern with existing material in use makes it excellent for prolonging the life of existing structures.

    Overview

    Overview

    Durbar is hot-rolled structural steel floor plate offering distinct benefits. It combines structural integrity with appealing features designed for easy use and long life. Durbar helps reduce construction costs by eliminating the need for separate structural and flooring components. Its distinctive, raised surface pattern is extremely slip resistant at all angles – allowing plates to be used in any direction. The raised pattern creates a self-draining surface. This is easy to clean and reduces corrosion for extended product life.

    Applications

    • Bridges
    • Cladding and protective barriers
    • Commercial vehicles
    • Containers
    • Lifts
    • Offshore installations
    • Shipbuilding
    • Stairs and walkways
    • Steps and safety platforms

    Relationship with standards

    Durbar meets the mechanical and chemical properties of ASTM A1011 and A1018 structural grades.
    Durbar meets the floor plate specification ASTM A786. 

    Properties

    Properties

    Mechanical properties

    The mechanical properties of Durbar comply with ASTM A1011 or ASTM A1018 and are shown in the table below.
    The values shown for strength and elongation are for test pieces taken transverse to the rolling direction; those for the impact test are for test pieces taken in the rolling direction. 

    ASTM A1011-15
    ASTM A1018-16

    Min. yield strength

    Tensile strength

    Min. elongation after fracture A (%)

    Grade

    ksi

    ksi

    L0 = 2 inch

     

     

     

     t < 0.064

    0.064 ≤ t < 0.097

    0.097 ≤ t < 0.23

    0.23 ≤ t

    SS Grade 33

    33

    52

    18

    22

    23

    22

    SS Grade 40

    40

    55

    15

    20

    21

    19

    SS Grade 50

    50

    65

    11

    16

    17

    -

    t - material thickness in mm.

     

    Chemical composition

    The chemical composition of Durbar complies with ASTM A1011 and A1018 and is shown in the table below. 

     

    C

    Mn

    P

    S

    Si

    N

    Grade

    Max.

    Max.

    Max.

    Max.

    Max.

    Max.

    SS Grade 33

    0.25

    0.90

    0.035

    0.04

    -

    SS Grade 40

    0.25

    0.90

    0.035

    0.04

    -

    SS Grade 50

    0.25

    1.35

    0.035

    0.04

    -

    All values are in weight %.

     

    Dimensions

    Dimensions

    Dimensional capability for non pickled steel.

    Dimensions in inch. 

    Thickness

    Standard Width

     

    SS Grade 33

    SS Grade 40

    SS Grade 50

    0.118

    49

    49

    49

    0.177

    59

    59

    59

    0.236

    59

    59

    -

    0.315

    59

    59

    -

    0.394

    59

    59

    -

    0.492

    59

    59

    -

    Widths of 39 inch (minimum) and 72 inch are also available – please contact us.
    Please also consult us on any other dimensions or grades.

     

    Tolerances on thickness

    Tolerances for wide strip and slit wide strip comply with standard ASTM A568: 2007 and A635: 2007 (click here).
    Tighter tolerances are available, please contact us. Tolerances are over, no under.

     

    back to top
     

    FAQs

    Frequently Asked Questions (FAQs)

     

    What is the fire resistance of Durbar?

    Durbar hot rolled steel floor plate is classed as non-combustible. When subjected to extreme heat, Durbar has distinct advantages over some other flooring materials. At temperatures where aluminium alloys have already begun to melt, Durbar steel floor plate will still be supporting design loads. The fire performance of an assembly is specific to the construction of that assembly and so we strongly recommend you check your fire rating with a qualified fire engineer.

     

    What is the slip resistance of Durbar?

    Durbar has been tested to BS 7976-2:2002 for slip resistance and found to have Extremely Low slip potential in the dry state and Low slip potential even when wet. The unique Durbar pattern ensures this optimised slip resistance and in comparison tests, competitors’ floor plate products display a lower slip resistance.

     

    Will galvanising and painting Durbar affect it’s characteristics?

    Independent testing, in both wet and dry conditions in accordance with BS7976-2 assessed as-supplied Durbar as extremely low slip when dry, and low slip when wet. Moreover, Durbar is self-draining.

    Galvanising and/or painting will alter the surface condition,  and thus the slip resistance – we suggest you  should consult the paint manufacturer for details of appropriate paint systems.

     

    Can Tata Steel provide calculations for my specific use case of Durbar?

    Durbar is stronger than ordinary mild steels, easily fabricated, and therefore well suited to performing a structural role efficiently. We provide load capacity tables for typical configurations of Durbar in the Design section of this web-page, which cover a range of representative cases. For specific use cases, we recommend that you consult an independent design engineer.

     

    Can I buy individual sheets of Durbar from Tata Steel?

    We manufacture Durbar in coil form and can supply both coil and cut sheet. We are the largest distributor in the UK of Durbar in a cut-sheet format. We supply Durbar sheet to an extensive range of local stockists that can provide product in appropriate sizes and quantities for specific end use requirements and projects

     
    Is Durbar a sustainable choice?

    Durbar is a structurally efficient choice for slip-resistant, hard-wearing and long-lasting flooring. Compared to some alternatives, less supporting structure is required. Durbar itself is 100% truly recyclable steel – indeed every sheet of Durbar includes a significant proportion of recycled steel.

    Durbar has been in use in structures for over 50 years and remains the benchmark in textured floorplate in the UK – the ability to match the pattern with existing material in use makes it excellent for prolonging the life of existing structures.