DD11
Specification details for DD11

EN-Automotive-Product-Hot-Rolled-Forming-All grades OverviewTSE

Overview

Applications

  • Automotive components
     

Relationship with standards

Tata Steel offers hot-rolled steel for forming in grades that comply with EN 10111: 2008 and in a special Tata Steel grade as shown in the table below. All grades are available in qualities suitable for galvanising.

As the EN standard applies only to steel ≤ 11mm thick, please consult us about the properties of steel in other thicknesses.

Tata SteelVDAEuropean standard
GradeVDA 239-100-16EN 10111: 2008
DD11-DD11 1
DD12-DD12
DD13-DD13
DD14HR2DD14
1. DD11 products should be used within one month of their availability
 

EN-EngineeringAutomotive-Product-Hot-rolled-All Grades Surface aspects Supply Conditions TSE

Supply Conditions

Supply - product conditions

Hot-rolled steel can be supplied with these product conditions and finishes and with this surface treatment:

Side/surface conditionnon-pickledpickledpickled and oiled
Mill edgesYesYesYes
Trimmed edges-YesYes
Trimmed edges available in thicknesses up to 8.0 mm. The steel grades shown on the following pages belong to the standard range offered by Tata Steel.
Please contact us regarding other specifications we may have that meet your needs.

Surface aspects

DescriptionAvailability
Surface finishCoils are available in non-pickled and pickled finish 
OilingPickled finish is available with rolling
or preservative oil applied. 
Oil weight normally 0.5-2.5 g/m2
Alternative oiling ranges are available.
Please contact us for details.
    

EN-EngineeringAutomotive-Product-Hot-Rolled-Forming-DD11-Properties TSE

Properties

Properties


Mechanical properties

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

EN 10111: 2008 Grade DD11
Yield strength ReL  (N/mm2) 1.5 ≤ t < 2 170 - 360
2 ≤ t < 11 170 - 340
Max. tensile strength Rm  (N/mm2)   440
Elongation (%) 1.5 ≤ t < 2 23
2 ≤ t < 3 24
3 ≤ t < 11 28
Min. bend test diameter   1t
Values are for test pieces taken transverse to the rolling direction:
t - material thickness in mm
Lower yield strength or 0.2% proof stress applies.
Test piece length L0 = 80 mm for thicknesses < 3mm and L0 = 5.65√S0 for thicknesses ≥3 mm
 

Chemical composition

Hot-rolled steel for forming meets the requirements of the cast analysis in the standard as shown in the table below:

EN 10111: 2008 Grade DD11
C Max. 0.12
Mn Max. 0.60
P Max. 0.045
S Max. 0.045
Not in EN 10111: 2008. Tata Steel’s own specification.
All values are in weight%.

 

EN-Automotive-Product-Hot-Rolled-Forming-DD11-Dimensions TSE

Dimensions

Dimensions

Dimensional capability – pickled.

Dimensions in mm..

ThicknessMax. width
From - up toDD11
1.50 - 1.601330
1.60 - 1.701405
1.70 - 1.801480
1.80 - 1.901555
1.90 - 2.001630
2.00 - 2.201705
2.20 - 2.401820
2.40 - 2.501925
2.50 - 2.601970
2.60 - 2.702020
2.70 - 6.352070
The minimum width is 1000 mm.
For trimmed edges, reduce the maximum widths shown by 23 mm.
Thicknesses up to 11 mm may be available - please contact us.
Non-pickled (dry) condition is also available.
Please contact us with your specific requirements

EN-EngineeringAutomotive-Product-Hot-rolled-All grades Shape and dimensional tolerances TSE

Shape and dimensional tolerances

Shape and dimensional tolerances

The specified values for wide strip do not apply to the uncropped ends of the coil (‘head’ and ‘tail’). 
The length of these uncropped ends is calculated using the following formula:

length (in metres) = 90/nominal thickness (in mm), with a maximum of 20 metres.

If required, this part of the coil can be removed, however an additional cost may be charged for this.
 

Tolerances on thickness

Tata Steel can supply to full thickness tolerance specified in EN 10051:2010.

Tighter tolerances are available as shown below:

Product typeThickness tolerances available
 (% of full EN 10051:2010 tolerance)
 100%75%66%60%50%33%
Steel for formingYesYesYesYesYesYes 1
High-strength low-alloy
(HSLA EN 10149-2)
YesYesYesYesYesYes 1
Ympress® HSLA    YesYes 1
Ympress® Laser    YesYes 1
Structural steelYesYesYesYesYesYes 1
Manganese boron steelYesYesYesYesYes 
Case-hardening steelYesYesYesYesYes 
High-carbon steelYes     
Dual phase steelYes     
Hot forming steelYes     
Valast® abrasion resistant steelYesYesYesYesYes 
Steel for pressure vesselsYes     
Steel for gas cylindersYes     
Steel for line pipeYes     
Ship plateYes     
1. Available for certain grades and thicknesses between 3.0 mm and 6.0 mm.
Please contact us on the availability of special tolerances to meet your requirements.
 
Tolerances on thickness for hot-rolled steel with a low carbon content 
for cold forming (DD11-DD14 in EN 10111:2008)
Nominal thicknessTolerances for a nominal width of
≤ 1200> 1200> 1500> 1800
≤ 1500≤ 1800
 ≤ 2.00± 0.13± 0.14± 0.16-
> 2.00≤ 2.50± 0.14± 0.16± 0.17± 0.19
> 2.50≤ 3.00± 0.15± 0.17± 0.18± 0.20
> 3.00≤ 4.00± 0.17± 0.18± 0.20± 0.20
> 4.00≤ 5.00± 0.18± 0.20± 0.21± 0.22
> 5.00≤ 6.00± 0.20± 0.21± 0.22± 0.23
> 6.00≤ 8.00± 0.22± 0.23± 0.23± 0.26
> 8.00≤ 11.00± 0.24± 0.25± 0.25± 0.28
All dimensions are mm.
Tolerances on thickness of steel grades with a specified minimum 
yield strength Re ≤ 300 N/mm2 (category A)
Nominal thicknessTolerances for a nominal width of
≤ 1200> 1200> 1500> 1800
≤ 1500≤ 1800
 ≤ 2.00± 0.17± 0.19± 0.21-
> 2.00≤ 2.50± 0.18± 0.21± 0.23± 0.25
> 2.50≤ 3.00± 0.20± 0.22± 0.24± 0.26
> 3.00≤ 4.00± 0.22± 0.24± 0.26± 0.27
> 4.00≤ 5.00± 0.24± 0.26± 0.28± 0.29
> 5.00≤ 6.00± 0.26± 0.28± 0.29± 0.31
> 6.00≤ 8.00± 0.29± 0.30± 0.31± 0.35
> 8.00≤ 10.00± 0.32± 0.33± 0.34± 0.40
> 10.00≤ 12.50± 0.35± 0.36± 0.37± 0.43
> 12.50≤ 15.00± 0.37± 0.38± 0.40± 0.46
> 15.00≤ 25.00± 0.40± 0.42± 0.45± 0.50
All dimensions are mm.
Tolerances on thickness of steel grades with a specified minimum 
yield strength 300 N/mm2 < Re ≤ 360 N/mm2 (category B)
Nominal thicknessTolerances for a nominal width of
≤ 1200> 1200> 1500> 1800
≤ 1500≤ 1800
 ≤ 2.00± 0.20± 0.22± 0.24-
> 2.00≤ 2.50± 0.21± 0.24± 0.26± 0.29
> 2.50≤ 3.00± 0.23± 0.25± 0.28± 0.30
> 3.00≤ 4.00± 0.25± 0.28± 0.30± 0.31
> 4.00≤ 5.00± 0.28± 0.30± 0.32± 0.33
> 5.00≤ 6.00± 0.30± 0.32± 0.33± 0.36
> 6.00≤ 8.00± 0.33± 0.35± 0.36± 0.40
> 8.00≤ 10.00± 0.37± 0.38± 0.39± 0.46
> 10.00≤ 12.50± 0.40± 0.41± 0.43± 0.49
> 12.50≤ 15.00± 0.43± 0.44± 0.46± 0.53
> 15.00≤ 25.00± 0.46± 0.48± 0.52± 0.58
All dimensions are mm.
Tolerances on thickness of steel grades with a specified minimum 
yield strength 360 N/mm2 < Re ≤ 420 N/mm2 (category C)
Nominal thicknessTolerances for a nominal width of
≤ 1200> 1200> 1500> 1800
≤ 1500≤ 1800
 ≤ 2.00± 0.22± 0.25± 0.27-
> 2.00≤ 2.50± 0.23± 0.27± 0.30± 0.33
> 2.50≤ 3.00± 0.26± 0.29± 0.31± 0.34
> 3.00≤ 4.00± 0.29± 0.31± 0.34± 0.35
> 4.00≤ 5.00± 0.31± 0.34± 0.36± 0.38
> 5.00≤ 6.00± 0.34± 0.36± 0.38± 0.40
> 6.00≤ 8.00± 0.38± 0.39± 0.40± 0.46
> 8.00≤ 10.00± 0.42± 0.43± 0.44± 0.52
> 10.00≤ 12.50± 0.46± 0.47± 0.48± 0.56
> 12.50≤ 15.00± 0.48± 0.49± 0.52± 0.60
> 15.00≤ 25.00± 0.52± 0.55± 0.59± 0.65
All dimensions are mm.
Tolerances on thickness of steel grades with a specified minimum 
yield strength 420 N/mm2 < Re ≤ 900 N/mm2 (category D)
Nominal thicknessTolerances for a nominal width of
≤ 1200> 1200> 1500> 1800
≤ 1500≤ 1800
 ≤ 2.00± 0.24± 0.27± 0.29-
> 2.00≤ 2.50± 0.25± 0.29± 0.32± 0.35
> 2.50≤ 3.00± 0.28± 0.31± 0.34± 0.36
> 3.00≤ 4.00± 0.31± 0.34± 0.36± 0.38
> 4.00≤ 5.00± 0.34± 0.36± 0.39± 0.41
> 5.00≤ 6.00± 0.36± 0.39± 0.41± 0.43
> 6.00≤ 8.00± 0.41± 0.42± 0.43± 0.49
> 8.00≤ 10.00± 0.45± 0.46± 0.48± 0.56
> 10.00≤ 12.50± 0.49± 0.50± 0.52± 0.60
> 12.50≤ 15.00± 0.52± 0.53± 0.56± 0.64
> 15.00≤ 25.00± 0.56± 0.59± 0.63± 0.70
All dimensions are mm.

Tolerances on width

Tolerances in mm.

Nominal width w    
Mill edgesTrimmed edges
lowerupperlowerupper
 w ≤ 120002003
 1200 < w ≤ 185002005
 w > 185002506

Tolerances  in mm for wide strip and slit wide strip
The tolerances for wide strip and slit wide strip comply with standard EN 10051:2010.

The specified values for wide strip do not apply to the uncropped ends of the coil (‘head’ and ‘tail’). 
The length of these uncropped ends is calculated using the following formula:

length (in metres) = 90/nominal thickness (in mm), with a maximum of 20 metres.

If required, this part of the coil can be removed, however an additional cost may be charged for this.

Edge camber

The deviation from the edge over a length of 5000 mm:

• with mill edges, no more than 20 mm
• with trimmed edges, no more than 15 mm

Flatness

Requirements as regards flatness can be agreed at the time of enquiry.

Option for maximum crown values

The following high crown C40 options available for hot-rolled products.

Crown values on the C20-position as well as minimum crown values 
on both C20 and C40 position are also available on request.

 

Maximum Crown C40 in µm values for hot-rolled steel 
with a low carbon content  for cold forming (DD11-DD14 in EN 10111:2008)

Category 1

C40

   
Nominal Thickness

≤ 1200

> 1200

> 1500

> 1800

≤ 1500≤ 1800
> 1.47≤ 2.0040404040
> 2.00≤ 2.5040405050
> 2.50≤ 3.0040405050
> 3.00≤ 6.0040505050
> 6.00≤ 11.0050505050

 

Maximum Crown C40 in µm values of structural steel grades
(S185-S235-S275 ≤ 10mm in EN 10025-2:2004)

Category 2

C40

   
Nominal Thickness

≤ 1200

> 1200

> 1500

> 1800

≤ 1500

≤ 1800

> 1.47≤ 2.0040404040
> 2.00≤ 2.5040405050
> 2.50≤ 20.0050505050
Maximum Crown C40 in µm values of structural steel grades 
(S275 > 10mm in EN 10025-2:2004) and HSLA grades (S315MC in EN 10149-2:1996)

Category 3

C40

   
Nominal Thickness

≤ 1200

> 1200

> 1500

> 1800

≤ 1500

≤ 1800

> 1.47≤ 2.0050506060
> 2.00≤ 2.5050606060
> 2.50≤ 3.0050606060
> 3.00≤ 20.0060607070
Maximum Crown C40 in µm values of HSLA grades
 (S355MC, S420MC, S460MC, S500MC, S550MC in EN 10149-2:1996)
Category 4C40   
Nominal Thickness≤ 1200> 1200> 1500> 1800
≤ 1500≤ 1800
> 1.47≤ 2.0060707070
> 2.00≤ 2.5060708080
> 2.50≤ 3.0060708080
> 3.00≤ 5.0070708080
> 5.00≤ 20.0080808080


Dimensions and coil weights

Tata Steel can supply hot-rolled steels with the following minimum and maximum dimensions and weights:

DescriptionAvailability
Coil diameter inner non-pickled762 mm
Coil diameter inner pickled610 mm standard
762 mm on request
Tolerance on inner diameter+0/-50 mm
Coil diameter outer non-pickledOuter diameter available is 10/7 x width
to reduce possibility of coil tipping over
Max. 2300 mm
Min. 1200 mm
Coil diameter outer pickled and oiledOuter diameter available is 10/7 x width
to reduce possibility of coil tipping over
Outer diameter
limit 2200 mm
Min. 1050 mm
Coil weightMax. 38,5 tonnes
Additional maximum limits from transport
limits and outer coil diameter
Some HR products may have different
coil weight ranges
KIM*: width ≤ 1200 mmmax. 23.1 kg/mm width
KIM*: 1200 < width ≤ 1700 mmmax. 21.6 kg/mm width
KIM*: 1700 < width ≤ 1900 mmmax. 20.9 kg/mm width
KIM*: width > 1900 mmmax. 18.8 kg/mm width 
Minimum tonnage per orderPlease refer to price list for order quantity details
Minimum order quantities may apply

* Other KIM values may be available - please contact us.

EN-EngineeringAutomotive-Product-Hot-rolled-Heavy+Light further processing TSE

Further processing

Further processing

We have a broad network of Tata Steel service centres across Europe, offering decoiling and slitting services from stock and against short lead times.

Heavy gauge processing

Processing type Decoiling
Thickness range (mm) 1.4 - 25.4
Width range (mm) 300 - 2600
Length range up to 18.4 m
Locations Netherlands

 

Light gauge processing

Processing type Slitting Decoiling Blanking
Thickness range (mm) 0.2 - 7.0 0.3 - 6.0 0.3 - 6.0
Width range (mm) 10 - 2050 50 - 2600 200 - 2600
Length range - up to 6 m up to 6 m
Locations Netherlands
Germany
France
Spain
Sweden
Norway
Finland
Netherlands
Germany
France
Spain
Sweden
Norway
Finland
Netherlands


For further information please visit our Service Centre webpages.