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  • Automotive - Cold-rolled - Advanced and ultra high-strength steel

    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.

    • Cold-rolled steel: consistent, reliable products

      Our advanced and ultra high-strength cold-rolled steels DP600-UC, DP800-UC, DP1000-UC and HQ1500-UC are lightweight and enable design freedom for complex parts.

      Their high yield and ductility ensure shape accuracy and tolerancing, which enable thickness reduction and maintained in-service performance for difficult-to-form parts.

    • Advanced and Ultra High-Strength steel

      Our advanced and ultra high-strength steel grades for automotive applications offer very high strength and optimised formability.

      This allows for weight reduction of and design freedom for different types of structural reinforcements and crash components.

    Contact us

    Tata Steel

    Automotive

    PO Box 10.000, 7H-04

    1970 CA IJmuiden

    The Netherlands

    T +31 (0) 251 495748

    Overview

    The good formability of our advanced and ultra high stength steelsallows the user to increase the strength of the finished Automotive components by exploiting the high work-hardening characteristics. Substitution of high strength steel grades provides opportunities to reduce thickness while maintaining the in-service performance, resulting in potential cost and mass savings.

    Dual phase grades

    Cold-rolled dual phase steels allow you to increase the strength of the finished component or reduce the thickness of the steel - or both. By increasing product performance and helping reduce weight, these steels support you to achieve your optimum performance parameters. The use of dual phase grades increases the output from each tonne of steel and produces products that are strong, light and safe under load. High strain-hardening capacity ensures our dual phase steels have good formability.

    Hot forming steel - CR HQ1500-UC

    Our CR HQ1500-UC product is an uncoated, ultra high-strength hot forming steel. It combines a strength level of 1500MN/mm2 with excellent shape accuracy. Compared with conventional high-strength, low-alloy grades, CR HQ1500-UC offers real opportunities for weight reduction through down-gauging. It also ensures good repeatability in long production runs when compared with cold press forming.

     

    Applications

    Pillar reinforcements
    crash structures
    Longitudinal members
    Cross-sections for light weight seat structures
    Precision tubes

    Relationship with standards

    Tata Steel can supply the following cold-rolled advanced and ultra high-strength steel grades: 

    Tata Steel VDA prEN 10338: 2009 1 EN 10083: 2009
    DP600 CR330Y590T-DP HCT600X -
    DP800 CR440Y780T-DP HCT780X -
    DP1000 CR590Y980T-DP HCT980X -
    HQ1500 - - 20MnB5 2

    1. This specification is in draft format at present.
    2. This grade is also widely known as 22MnB5.

     

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    Properties

     

    Mechanical properties

    Dual phase grades

    The values shown for the mechanical properties in the table below are for test pieces taken parallel to the rolling direction.

    Product

    Yield
    strength 1 Rp0.2

    Tensile strength Rm

    Elongation after fraction A
    (L0 = 80mm)

    Min. n-value (10% - Ag)

    Min. BH2

    Grade

    N/mm²

    N/mm²

    %

     

    N/mm²

    CR DP600-UC

    340 - 420

    600

    20

    0.14

    30

    CR DP800-UC

    450 - 560

    780

    14

    -

    30

    CR DP1000LY-UC

    600 - 750

    980

    10

    -

    30

    1. Yield strength refers to the 0.2% proof strength for the product.
    The mechanical properties of the uncoated product before and after hot forming (taken parallel to the rolling direction) are shown in the table below.

    Hot forming grade

    Product

    As delivered

    Yield
    strength 1 Rp0.2

    Tensile strength Rm

    Elongation after fracture A
    (L0 = 80mm)

    n-value

    r-value

    Grade

    N/mm²

    N/mm²

    %

     

     

    CR HQ1500-UC 
    - Guaranteed

    ≥ 300

    500 - 580

    ≥ 20

    -

    -

    CR HQ1500-UC
    - Typical

    340 - 440

    500 - 580

    > 21

    > 0.150

    0.90 - 1.0

     

    Product

    Hot formed

    Yield strength 1 Rp0.2

    Tensile strength Rm

    Elongation after fracture A
    (L0 = 80mm)

    Grade

    N/mm²

    N/mm²

    %

    CR HQ1500-UC 
    - Guaranteed

    1000 - 1250

    1300 - 1600

    ≥ 5

    CR HQ1500-UC 
    - Typical

    1025 - 1100

    1420 - 1520

    5 - 7

    1. Yield strength refers to the 0.2% proof strength for the product.

     

    Chemical composition

    The table below shows the chemical composition to the draft prEN 10338: 2009 (for dual phase) and EN 10083-3: 2006 (for hot forming steel) specifications.

    Product

    C

    Si

    Mn

    P

    S

    Altot

    Cr + Mo 1

    Nb + Ti 2

    V

    B

     

    Max.

    Max.

    Max.

    Max.

    Max.

     

    Max.

    Max.

    Max.

    Max.

    CR DP600-UC

    0.17

    0.80

    2.20

    0.080

    0.015

    ≤ 2.00

    1.00

    0.15

    0.20

    0.005

    CR DP800-UC

    0.18

    0.80

    3.00

    0.080

    0.015

    ≤ 2.00

    1.00

    0.15

    0.20

    0.005

    CR DP1000-UC

    0.23

    0.80

    3.00

    0.080

    0.015

    ≤ 2.00

    1.00

    0.15

    0.20

    0.005

     

     

     

     

     

     

     

     

     

     

     

    CR HQ1500-UC 
    - Guaranteed

    0.23

    0.3

    1.3

    0.02

    0.010

    0.02 - 0.06

    0.3

    0.04

    -

    0.005

    CR HQ1500-UC
    - Typical

    0.22

    0.24

    1.2

    0.01

    0.005

    0.04

    0.2

    0.03

    -

    0.003

    EN 10083 20MnB5

    0.23

    0.4

    1.4

    0.025

    0.035

    -

    -

    -

    -

    0.0008 - 0.005

    1. Refers to Cr max for CR HQ1500-UC.
    2. Refers to Ti max for CR HQ1500-UC.
    Values in weight percentages.

     

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    Dimensions

     

    Dimensional capability

    Order volumes may apply to some dimensions - please contact us for details.

    For continuously-annealed (CA).

    Dimensions in mm.

    Thickness

    Max. width

    From - up to

    CR DP600-UC 1

    CR DP800-UC 2

    CR DP1000LY-UC 3

    CR HQ1500-UC

    0.70 - 0.80 1, 2

    -

    -

    -

    -

    0.80 - 0.90

    1450

    1260

    1270

    1150

    0.90 - 1.00

    1450

    1260

    1270

    1150

    1.00 - 1.10

    1450

    1260

    1270

    1150

    1.10 - 1.20

    1450

    1260

    1350

    1150

    1.20 - 1.30

    1450

    1260

    1350

    1300

    1.30 - 1.40

    1450

    1260

    1400

    1300

    1.40 - 1.60

    1468

    1415

    1400

    1300

    1.60 - 1.80

    1468

    1415

    -

    1300

    1.80 - 2.00

    1468

    1415

    -

    -

    1. DP600 thicknesses from 0.7 mm up to 0.8mm for widths up to 1500mm are under development. Please contact us for latest availability.
    2. DP800 thicknesses from 0.7 mm up to 0.8mm for widths up to 1475mm are under development. Please contact us for latest availability.
    3. DP1000 thicknesses from 1.6mm up to 2.0mm for widths up to 1500mm are under development. Please contact us for latest availability.
    Minimum width is 900mm for all grades.

     

    back to top

    Overview

    Overview

    The good formability of our advanced and ultra high stength steelsallows the user to increase the strength of the finished Automotive components by exploiting the high work-hardening characteristics. Substitution of high strength steel grades provides opportunities to reduce thickness while maintaining the in-service performance, resulting in potential cost and mass savings.

    Dual phase grades

    Cold-rolled dual phase steels allow you to increase the strength of the finished component or reduce the thickness of the steel - or both. By increasing product performance and helping reduce weight, these steels support you to achieve your optimum performance parameters. The use of dual phase grades increases the output from each tonne of steel and produces products that are strong, light and safe under load. High strain-hardening capacity ensures our dual phase steels have good formability.

    Hot forming steel - CR HQ1500-UC

    Our CR HQ1500-UC product is an uncoated, ultra high-strength hot forming steel. It combines a strength level of 1500MN/mm2 with excellent shape accuracy. Compared with conventional high-strength, low-alloy grades, CR HQ1500-UC offers real opportunities for weight reduction through down-gauging. It also ensures good repeatability in long production runs when compared with cold press forming.

     

    Applications

    Pillar reinforcements
    crash structures
    Longitudinal members
    Cross-sections for light weight seat structures
    Precision tubes

    Relationship with standards

    Tata Steel can supply the following cold-rolled advanced and ultra high-strength steel grades: 

    Tata Steel VDA prEN 10338: 2009 1 EN 10083: 2009
    DP600 CR330Y590T-DP HCT600X -
    DP800 CR440Y780T-DP HCT780X -
    DP1000 CR590Y980T-DP HCT980X -
    HQ1500 - - 20MnB5 2

    1. This specification is in draft format at present.
    2. This grade is also widely known as 22MnB5.

     

    back to top

     

    Properties

    Properties

     

    Mechanical properties

    Dual phase grades

    The values shown for the mechanical properties in the table below are for test pieces taken parallel to the rolling direction.

    Product

    Yield
    strength 1 Rp0.2

    Tensile strength Rm

    Elongation after fraction A
    (L0 = 80mm)

    Min. n-value (10% - Ag)

    Min. BH2

    Grade

    N/mm²

    N/mm²

    %

     

    N/mm²

    CR DP600-UC

    340 - 420

    600

    20

    0.14

    30

    CR DP800-UC

    450 - 560

    780

    14

    -

    30

    CR DP1000LY-UC

    600 - 750

    980

    10

    -

    30

    1. Yield strength refers to the 0.2% proof strength for the product.
    The mechanical properties of the uncoated product before and after hot forming (taken parallel to the rolling direction) are shown in the table below.

    Hot forming grade

    Product

    As delivered

    Yield
    strength 1 Rp0.2

    Tensile strength Rm

    Elongation after fracture A
    (L0 = 80mm)

    n-value

    r-value

    Grade

    N/mm²

    N/mm²

    %

     

     

    CR HQ1500-UC 
    - Guaranteed

    ≥ 300

    500 - 580

    ≥ 20

    -

    -

    CR HQ1500-UC
    - Typical

    340 - 440

    500 - 580

    > 21

    > 0.150

    0.90 - 1.0

     

    Product

    Hot formed

    Yield strength 1 Rp0.2

    Tensile strength Rm

    Elongation after fracture A
    (L0 = 80mm)

    Grade

    N/mm²

    N/mm²

    %

    CR HQ1500-UC 
    - Guaranteed

    1000 - 1250

    1300 - 1600

    ≥ 5

    CR HQ1500-UC 
    - Typical

    1025 - 1100

    1420 - 1520

    5 - 7

    1. Yield strength refers to the 0.2% proof strength for the product.

     

    Chemical composition

    The table below shows the chemical composition to the draft prEN 10338: 2009 (for dual phase) and EN 10083-3: 2006 (for hot forming steel) specifications.

    Product

    C

    Si

    Mn

    P

    S

    Altot

    Cr + Mo 1

    Nb + Ti 2

    V

    B

     

    Max.

    Max.

    Max.

    Max.

    Max.

     

    Max.

    Max.

    Max.

    Max.

    CR DP600-UC

    0.17

    0.80

    2.20

    0.080

    0.015

    ≤ 2.00

    1.00

    0.15

    0.20

    0.005

    CR DP800-UC

    0.18

    0.80

    3.00

    0.080

    0.015

    ≤ 2.00

    1.00

    0.15

    0.20

    0.005

    CR DP1000-UC

    0.23

    0.80

    3.00

    0.080

    0.015

    ≤ 2.00

    1.00

    0.15

    0.20

    0.005

     

     

     

     

     

     

     

     

     

     

     

    CR HQ1500-UC 
    - Guaranteed

    0.23

    0.3

    1.3

    0.02

    0.010

    0.02 - 0.06

    0.3

    0.04

    -

    0.005

    CR HQ1500-UC
    - Typical

    0.22

    0.24

    1.2

    0.01

    0.005

    0.04

    0.2

    0.03

    -

    0.003

    EN 10083 20MnB5

    0.23

    0.4

    1.4

    0.025

    0.035

    -

    -

    -

    -

    0.0008 - 0.005

    1. Refers to Cr max for CR HQ1500-UC.
    2. Refers to Ti max for CR HQ1500-UC.
    Values in weight percentages.

     

    back to top

    Dimensions

    Dimensions

     

    Dimensional capability

    Order volumes may apply to some dimensions - please contact us for details.

    For continuously-annealed (CA).

    Dimensions in mm.

    Thickness

    Max. width

    From - up to

    CR DP600-UC 1

    CR DP800-UC 2

    CR DP1000LY-UC 3

    CR HQ1500-UC

    0.70 - 0.80 1, 2

    -

    -

    -

    -

    0.80 - 0.90

    1450

    1260

    1270

    1150

    0.90 - 1.00

    1450

    1260

    1270

    1150

    1.00 - 1.10

    1450

    1260

    1270

    1150

    1.10 - 1.20

    1450

    1260

    1350

    1150

    1.20 - 1.30

    1450

    1260

    1350

    1300

    1.30 - 1.40

    1450

    1260

    1400

    1300

    1.40 - 1.60

    1468

    1415

    1400

    1300

    1.60 - 1.80

    1468

    1415

    -

    1300

    1.80 - 2.00

    1468

    1415

    -

    -

    1. DP600 thicknesses from 0.7 mm up to 0.8mm for widths up to 1500mm are under development. Please contact us for latest availability.
    2. DP800 thicknesses from 0.7 mm up to 0.8mm for widths up to 1475mm are under development. Please contact us for latest availability.
    3. DP1000 thicknesses from 1.6mm up to 2.0mm for widths up to 1500mm are under development. Please contact us for latest availability.
    Minimum width is 900mm for all grades.

     

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