Steel for forming
Hot-rolled steel for cold forming is used for bending and deep drawing.
Tata Steel's forming grades offer consistency for reliable processing and low carbon content for excellent welding performance.
The optimised chemistry of Tata Steel grade DD14+ offers enhanced formability for complex components. DD13WR is particularly suitable for use in wheel rims because of its low aluminium content and controlled Mn:Si ratio. The low carbon content gives DD13WR excellent welding performance.
EN-Engineering-Product-Hot-Rolled-Forming-DD11 TSE
EN-Engineering-Product-Hot-Rolled-Forming-All grades OverviewTSE
Applications
- Automotive components
- Domestic appliance components
- Furniture
- Switch gear panels
- Wheel rims
- Tubes and sections
Relationship with standards
Tata Steel offers hot-rolled steel for forming in grades that comply with EN 10111: 2008 and in special Tata Steel grades 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.
|
European standard |
|---|
|
EN 10111: 2008 |
|
DD11 2 |
|
DD12 |
|
DD13 |
|
DD13WR 1 |
|
DD14 |
|
DD14+ 1 |
1. Not in EN 10111: 2008 . Tata Steel’s own specification.
2. DD11 products should be used within one month of their availability.
Supply - product conditions
Hot-rolled steel can be supplied with these product conditions and finishes and with this surface treatment:
|
Side/surface condition |
non-pickled |
pickled |
pickled and oiled |
|---|---|---|---|
|
Mill edges |
Yes |
Yes |
Yes |
|
Trimmed edges |
- |
Yes |
Yes |
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
|
Description |
Availability |
|---|---|
|
Surface finish |
Coils are available in non-pickled and pickled finish |
|
Oiling |
Pickled 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-All Grades Surface aspects Supply Conditions TSE
Supply - product conditions
Hot-rolled steel can be supplied with these product conditions and finishes and with this surface treatment:
| Side/surface condition | non-pickled | pickled | pickled and oiled |
|---|---|---|---|
| Mill edges | Yes | Yes | Yes |
| Trimmed edges | - | Yes | Yes |
Trimmed edges available in thicknesses up to 8.0 mm.
Please contact us regarding other specifications we may have that meet your needs.
Surface aspects
| Description | Availability |
|---|---|
| Surface finish | Coils are available in non-pickled and pickled finish for most grades. For grade specific availability, please refer to the dimensional tables. |
| Oiling | Pickled 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.
Certification
Test certificates 2.2/3.1 are available according to EN 10204.
EN-EngineeringAutomotive-Product-Hot-Rolled-Forming-DD11-Properties TSE
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 = 80mm for thicknesses <3mm and L0 = 5.65√S0 for thicknesses ≥3mm
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. | 0.6 |
| P | Max. | 0.045 |
| S | Max. | 0.045 |