Cold-rolled

Advanced and ultra high-strength steel

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


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

Our advanced and ultra high-strength cold-rolled steels DP600, DP800, DP1000 and HQ1500 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.
 

 

Cold-rolled profile
Cold-rolled annealing line, Port Talbot, UK
Product specification
Advanced high-strength steel is currently available in the following grades

EN-Product-Cold-rolled-AHSS-HCT590X TSUK

HCT590X
Specification details for HCT590X

EN-Product-Cold-rolled-AHSS-All Grades OverviewTSUK

Overview

The good formability of our advanced and ultra high-strength steels (AHSS / UHSS) allows the user to increase the strength of the finished automotive components in body in white applications (BIW) 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 - 22MnB5

Our 22MnB5 product is an uncoated, ultra high-strength hot forming steel. It combines a strength level of 1500 N/mm2 with excellent shape accuracy. Compared with conventional high-strength, low-alloy grades, 22MnB5 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

Body in white (BIW), structural and reinforcement components and lightweight structural seat components

Relationship with standards

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

Tata Steel VDA EN 10338: 2015 EN 10083: 2009
DP600 CR330Y590T-DP HCT590X -
DP800 CR440Y780T-DP HCT780X -
22MnB5 - - 20MnB5 1
1. This grade is also widely known as 22MnB5.

EN-Product-Cold-rolled-AHSS-HCT590X-Properties TSUK

Properties

Properties


Mechanical properties

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

EN 10338: 2015 Grade HCT590X
Yield strength1 Rp0.2 N/mm² 330 - 430
Tensile strength Rm N/mm² 590
Elongation % 20
Min. n-value (10% - Ag)   0.14
Min. BH2 N/mm² 30

 

 

 

 

 

1. Yield strength refers to the 0.2% proof strength for the product.
Elongation after fraction A uses test piece length L0 = 80 mm.
 

Chemical composition

The table below shows the chemical composition to the draft EN 10338: 2015.

EN 10338: 2015 Grade HCT590X
C Max. 0.15
Mn Max. 2.50
P Max. 0.040
S Max. 0.015
Si Max. 0.75
Altot   0.015 - 1.500
Cr + Mo Max. 1.40
Nb + Ti Max. 0.15
V Max. 0.20
B Max. 0.005


All values are in weight%.

EN-Product-Cold-rolled-AHSS-HCT590X-Dimensions TSUK

Dimensions

Dimensional capability - Continuously annealed (CA)

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

Dimensions in mm.

Thickness Max. width
From - up to HCT590X
0.70 - 0.80 -
0.80 - 1.40 1440
1.40 - 2.00 1500

DP600 thicknesses from 0.7 mm up to 0.8 mm are under development. Please contact us for latest availability.

Minimum width is 900 mm.
 

Tolerances

Tolerances on shape and dimensions comply with standard EN 10131: 2006
Tighter tolerances are available, please contact us for details.

EN-Product-Cold-rolled-AHSS-DownloadsTSUK

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EN-Product-Cold-rolled-AHSS-HCT780X TSUK

HCT780X
Specification details for HCT780X

EN-Product-Cold-rolled-AHSS-All Grades OverviewTSUK

Overview

The good formability of our advanced and ultra high-strength steels (AHSS / UHSS) allows the user to increase the strength of the finished automotive components in body in white applications (BIW) 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 - 22MnB5

Our 22MnB5 product is an uncoated, ultra high-strength hot forming steel. It combines a strength level of 1500 N/mm2 with excellent shape accuracy. Compared with conventional high-strength, low-alloy grades, 22MnB5 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

Body in white (BIW), structural and reinforcement components and lightweight structural seat components

Relationship with standards

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

Tata Steel VDA EN 10338: 2015 EN 10083: 2009
DP600 CR330Y590T-DP HCT590X -
DP800 CR440Y780T-DP HCT780X -
22MnB5 - - 20MnB5 1
1. This grade is also widely known as 22MnB5.

EN-Product-Cold-rolled-AHSS-HCT780X-Properties TSUK

Properties

Properties


Mechanical properties

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

EN 10338: 2015 Grade HCT780X
Yield strength1 Rp0.2 N/mm² 450 - 550
Tensile strength Rm N/mm² 780
Elongation % 14
Min. n-value (10% - Ag)   -
Min. BH2 N/mm² 30

 

 

 

 

 

1. Yield strength refers to the 0.2% proof strength for the product.
Elongation after fraction A uses test piece length L0 = 80 mm.
 

Chemical composition

The table below shows the chemical composition to the EN 10338: 2015.

EN 10338: 2015 Grade HCT780X
C Max. 0.18
Mn Max. 2.50
P Max. 0.080
S Max. 0.015
Si Max. 0.80
Altot   0.15 - 2.00
Cr + Mo Max. 1.40
Nb + Ti Max. 0.15
V Max. 0.20
B Max. 0.005


All values are in weight%.

EN-Product-Cold-rolled-AHSS-HCT780X-Dimensions TSUK

Dimensions

Dimensional capability - Continuously annealed (CA)

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

Dimensions in mm.

Thickness Max. width
From - up to HCT780X
0.80 - 1.00 1200
1.00 - 2.00 1400
Minimum width is 900 mm.
 

Tolerances

Tolerances on shape and dimensions comply with standard EN 10131: 2006
Tighter tolerances are available, please contact us for details.

EN-Product-Cold-rolled-AHSS-DownloadsTSUK

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EN-Product-Cold-rolled-AHSS-CR 22MnB5 TSUK

CR 22MnB5
Specification details for 22MnB5

EN-Product-Cold-rolled-AHSS-All Grades OverviewTSUK

Overview

The good formability of our advanced and ultra high-strength steels (AHSS / UHSS) allows the user to increase the strength of the finished automotive components in body in white applications (BIW) 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 - 22MnB5

Our 22MnB5 product is an uncoated, ultra high-strength hot forming steel. It combines a strength level of 1500 N/mm2 with excellent shape accuracy. Compared with conventional high-strength, low-alloy grades, 22MnB5 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

Body in white (BIW), structural and reinforcement components and lightweight structural seat components

Relationship with standards

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

Tata Steel VDA EN 10338: 2015 EN 10083: 2009
DP600 CR330Y590T-DP HCT590X -
DP800 CR440Y780T-DP HCT780X -
22MnB5 - - 20MnB5 1
1. This grade is also widely known as 22MnB5.

EN-Product-Cold-rolled-AHSS-CR 22MnB5-Properties TSUK

Properties

Properties


Mechanical properties

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

As delivered Grade CR 22MnB5
Guaranteed
CR 22MnB5
Typical
Yield strength1 Rp0.2 N/mm² ≥ 300 340 - 440
Tensile strength Rm N/mm² 500 - 580 500 - 580
Elongation % ≥ 20 > 21
r-value   - 0.90 - 1.0
n-value   - > 0.150
 
 
 
 

 

Hot formed Grade CR 22MnB5
Guaranteed
CR 22MnB5
Typical
Yield strength 1 Rp0.2 N/mm² 1000 - 1250 1025 - 1100
Tensile strength Rm N/mm² 1300 - 1600 1420 - 1520
Elongation % ≥ 5 5 - 7  
1. Yield strength refers to the 0.2% proof strength for the product.
Elongation after fraction A uses test piece length L0 = 80 mm.
 

Chemical composition

The table below shows the chemical composition to the draft EN 10338: 2015 (for dual phase steel) and EN 10083-3: 2006 (for hot forming steel) specifications.

    CR 22MnB5
Guaranteed
CR 22MnB5
Typical
  Grade
C Max. 0.23 0.22
Mn Max. 1.3 1.2
P Max. 0.02 0.01
S Max. 0.010 0.005
Si Max. 0.3 0.24
Altot   0.02 - 0.06 0.04
Cr + Mo 1 Max. 0.3 0.2
Nb + Ti 2 Max. 0.04 0.03
V Max. - -
B Max. 0.005 0.003
1. Refers to Cr max for CR 22MnB5.
2. Refers to Ti max for CR 22MnB5
All values are in weight%.

EN-Product-Cold-rolled-AHSS-CR 22MnB5-Dimensions TSUK

Dimensions

Dimensional capability - Continuously annealed (CA)

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

Dimensions in mm.

Thickness Max. width
From - up to CR 22MnB5
0.90 - 1.20 1180
1.20 - 1.40 1230
1.40 - 1.60 1310
1.60 - 1.80 1360
1.80 - 2.00 1380
Minimum width is 900 mm.
Please contact us for latest availability.
 

Tolerances

Tolerances on shape and dimensions comply with standard EN 10131: 2006
Tighter tolerances are available, please contact us for details.

EN-Product-Cold-rolled-AHSS-DownloadsTSUK

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