EN-Automotive-Product-Metallic coated-AHSS UHSS-All Grades OverviewTSE
Meeting design demands
Body-in-white design demands affordability and improved crash performance, combined with low weight. Our advanced high-strength steels (AHSS) and ultra high-strength steels (UHSS) help meet those demands and provide good formability.
Tata Steel supports customers in finding the optimum balance between cost, lightweight design potential and performance for specific applications. Total cost of ownership (TCO) concept studies identify and quantify the TCO reduction potential offered by Tata Steel’s advanced steel solutions like HyperForm® for specific automotive applications.
Applications
Applications for our advanced high-strength and ultra high-strength steels include:
- automotive A-, B- and C-pillars
- box girders for chassis
- crash boxes
- crossbeams and cross members
- roofbows
- door and sill reinforcements
- support components
Relationship with standards
Tata Steel offers the following grades:
| Grade | VDA 239-100 | EN 10346:2015 |
|---|---|---|
| Dual-phase | ||
| CR DP600-GI/GA | CR330Y590T-DP-GI/GA | HCT590X+Z/ZF |
| CR DP600-GI HyperForm® | CR330Y590T-DH-GI 1 | - |
| CR DP800-GI/GA | CR440Y780T-DP-GI/GA | HCT780X+Z/ZF |
| CR DP800-GI HyperForm® | CR440Y780T-DH-GI | - |
| CR DP1000LY-GI | CR590Y980T-DP-GI | HCT980X+Z |
| CR DP1000HY-GI | CR700Y980T-DP-GI | HCT980XG+Z |
Please contact us for AHSS with MagiZinc® coating.
1) VDA draft
EN-Automotive-Product-Metallic coated-All Grades Coatings Surface aspectsTSE
Coatings
Three types of metallic coating are available:
- Pure zinc. Galvanised steel (GI) is coated with an almost pure zinc coating (>99% zinc)
- Zinc-iron alloy. Galvannealed steel (GA) is coated with a zinc coating containing approximately 8-12% iron
- MagiZinc Auto. MagiZinc Auto steel (ZM) is coated with a zinc coating containing additional magnesium and aluminium.
Coating weight
Coating | Minimum | Maximum |
|---|---|---|
| Pure zinc (Z) | 90 (6 µm/side) | 600 (42 µm/side) |
| Zinc-iron (ZF) | 90 (6 µm/side) | 140 (10 µm/side) |
| MagiZinc (ZM) | 70 (5 µm/side) | 200 (14 µm/side) |
Coating weight measured in g/m2 double-sided (µm, per side).
Surface condition
Surface condition complies with standard: EN 10346:2015. Galvanised steels are available in surface conditions with minimised spangle MB or MC. Galvannealed steels and MagiZinc Auto are available in surface conditions B or C.
Surface condition B: improved surface, suitable for unexposed parts
With this surface condition, small imperfections such as stretch levelling breaks, skin pass marks, slight scratches, indentations, surface structure, zinc run-off marks and light passivation stains are permissible.
Surface condition C: best quality surface, suitable for exposed parts
Surface condition C is obtained by skin passing. The controlled surface for the exposed side enables application of a uniform paint finish. The reverse surface has, at least, the characteristics of surface quality B.
Surface finish
Galvanised (GI) grades with surface condition MC are available with different levels of surface finish. For exposed body panels with stringent paint appearance requirements we offer ‘regular’ surface finish. For panels with the highest paint appearance requirements we recommend the premium surface finish Serica FLO®.
Surface roughness
Metallic coated steel for automotive applications can be supplied in various grades of roughness to comply with individual customer norms. If no roughness is specified, roughness will be as shown in the table below
| Roughness Ra (µm) | |
|---|---|
| cut off 0.8mm | cut off 2.5mm |
| 0.6 - 1.9 | 0.7 - 2.2 |
Surface treatments
The surface treatments available are oiling and T-treatment.
Oiling (O)
The material surface can be oiled with preservative oil. Other types of oil - for increasing strength or reducing weight – are available to help achieve your optimum performance parameters. Please contact us for details.
Tata Steel offers the following range of oiling levels:
| Coating type | Oiling level |
|---|---|
| Pure zinc (GI) | 0.25 - 1.5 g/m2 |
| Zinc-iron(GA) | 0.5 - 1.5 g/m2 |
| MagiZinc Auto(ZM) | 0.25 - 1.5 g/m2 |
Other oiling levels are available on request.
T-treatment
Please contact us for further information.
Prime Lubrication Treatment (PLT)
Prime Lubrication Treatment facilitates the manufacturing of stamped components by minimising known issues in stamping and joining.
For further information please visit our Prime Lubrication Treatment (PLT) page.
EN-Automotive-Product-Metallic Coated-AHSS-CR DP800 HyperForm-Properties TSN
Properties
Mechanical properties
DP800 HyperForm® values are measured longitudinal to the rolling direction.
| Grade | CR DP800 HyperForm® | |
|---|---|---|
| Coating type | GI | |
| Yield strength Rp0,2 | N/mm2 | 440 - 550 |
| Min. BH2 | N/mm2 | 30 |
| Tensile strength Rm | N/mm2 | 780 - 900 |
| Elongation | % | 18 |
| Min. r-value | - | |
| Min. n-value | 0.13 |
For galvannealed grades (ZF) the minimum elongation before fracture is lowered by 2%.
Elongation after fracture A uses test piece length L0 = 80 mm.
Chemical composition
Tata Steel supplies the following cast analysis with maximum values in weight percentages:
| Grade | CR DP800 HyperForm® | |
|---|---|---|
| C | Max. | 0.18 |
| Mn | Max. | 2.50 |
| P | Max. | 0.050 |
| S | Max. | 0.010 |
| Si | Max. | 0.80 |
| Al | Max. | 1.00 |
| Cr+Mo | Max. | 1.40 |
All values in weight%.
EN-Automotive-Product-Metallic Coated-AHSS-CR DP800 HyperForm-Dimensions TSN
Dimensional capability
Galvanised (GI) products
Dimensions in mm.
| Thickness | Max. width |
|---|---|
| From - up to | CR DP800 HyperForm® |
| 0.80 - 0.90 | 1300 |
| 0.90 - 1.00 | 1335 |
| 1.00 - 1.10 | 1370 |
| 1.10 - 1.20 | 1390 |
| 1.20 - 1.30 | 1410 |
| 1.30 - 1.40 | 1440 |
| 1.40 - 1.50 | 1470 |
| 1.50 - 1.60 | 1430 |
| 1.60 - 1.70 | 1400 |
| 1.70 - 1.80 | 1370 |
| 1.80 - 2.00 | 1350 |
For widths below 900 mm, please contact us.
The tightest available thickness tolerances are according to the ‘Special’ tolerances of EN10143:2006.
Tolerances
Tolerances comply with standard EN 10143: 2006.
Tighter tolerances are available - please contact us for details.
EN-EngineeringAutomotive-Product-Metallic Coated-All Grades Shape and Dimensional TolerancesTSE
Tolerances on thickness
The tolerances comply with standard EN 10143: 2006.
Tighter tolerances are available on request.
Thickness tolerance availability is shown below:
|
Thickness tolerance |
Availability |
|---|---|
|
Full thickness tolerance |
Available |
|
Special thickness tolerance |
Available |
|
50% of full thickness tolerance |
Refer before ordering |
The following tolerances apply to the grades with a minimum value for the yield strength lower than 260N/mm².
|
Nominal |
Normal tolerances for a nominal width of 1 2 |
Special tolerances (S) for a |
|||||
|---|---|---|---|---|---|---|---|
|
|
≤ 1200 |
> 1200 |
> 1500 |
≤ 1200 |
> 1200 |
> 1500 |
|
|
|
≤ 1500 |
|
|
≤ 1500 |
|
||
|
> 0.40 |
≤ 0.60 |
± 0.04 |
± 0.05 |
± 0.06 |
± 0.035 |
± 0.040 |
± 0.045 |
|
> 0.60 |
≤ 0.80 |
± 0.05 |
± 0.06 |
± 0.07 |
± 0.040 |
± 0.045 |
± 0.050 |
|
> 0.80 |
≤ 1.00 |
± 0.06 |
± 0.07 |
± 0.08 |
± 0.045 |
± 0.050 |
± 0.060 |
|
> 1.00 |
≤ 1.20 |
± 0.07 |
± 0.08 |
± 0.09 |
± 0.050 |
± 0.060 |
± 0.070 |
|
> 1.20 |
≤ 1.60 |
± 0.10 |
± 0.11 |
± 0.12 |
± 0.060 |
± 0.070 |
± 0.080 |
|
> 1.60 |
≤ 2.00 |
± 0.12 |
± 0.13 |
± 0.14 |
± 0.070 |
± 0.080 |
± 0.090 |
|
> 2.00 |
≤ 2.50 |
± 0.14 |
± 0.15 |
± 0.16 |
± 0.090 |
± 0.100 |
± 0.110 |
|
> 2.50 |
≤ 3.00 |
± 0.17 |
± 0.17 |
± 0.18 |
± 0.110 |
± 0.120 |
± 0.130 |
|
> 3.00 |
≤ 5.00 |
± 0.20 |
± 0.20 |
± 0.21 |
± 0.15 |
± 0.16 |
± 0.17 |
|
> 5.00 |
≤ 6.50 |
± 0.22 |
± 0.22 |
± 0.23 |
± 0.17 |
± 0.18 |
± 0.19 |
1. Around cold-rolled welds an increase of 20% at the most over the thickness tolerance is allowed
over a length of 15 metres.
2. For zinc coatings ≥ Z450 the tolerance on the thickness must be raised by 0.02mm.
The following tolerances apply to the steel grades with a minimum value for the yield strength 260N/mm² ≤ Rp0.2 < 360N/mm² and for grades DX51D and S550GD.
|
Nominal |
Normal tolerances for a nominal width of 1 2 |
Special tolerances (S) for a |
|||||
|---|---|---|---|---|---|---|---|
|
|
≤ 1200 |
> 1200 |
> 1500 |
≤ 1200 |
> 1200 |
> 1500 |
|
|
|
≤ 1500 |
|
|
≤ 1500 |
|
||
|
≥ 0.35 |
≤ 0.40 |
± 0.05 |
± 0.06 |
- |
± 0.035 |
± 0.040 |
- |
|
> 0.40 |
≤ 0.60 |
± 0.05 |
± 0.06 |
± 0.07 |
± 0.040 |
± 0.045 |
± 0.050 |
|
> 0.60 |
≤ 0.80 |
± 0.06 |
± 0.07 |
± 0.08 |
± 0.045 |
± 0.050 |
± 0.060 |
|
> 0.80 |
≤ 1.00 |
± 0.07 |
± 0.08 |
± 0.09 |
± 0.050 |
± 0.060 |
± 0.070 |
|
> 1.00 |
≤ 1.20 |
± 0.08 |
± 0.09 |
± 0.11 |
± 0.060 |
± 0.070 |
± 0.080 |
|
> 1.20 |
≤ 1.60 |
± 0.11 |
± 0.13 |
± 0.14 |
± 0.070 |
± 0.080 |
± 0.090 |
|
> 1.60 |
≤ 2.00 |
± 0.14 |
± 0.15 |
± 0.16 |
± 0.080 |
± 0.090 |
± 0.110 |
|
> 2.00 |
≤ 2.50 |
± 0.16 |
± 0.17 |
± 0.18 |
± 0.110 |
± 0.120 |
± 0.130 |
|
> 2.50 |
≤ 3.00 |
± 0.19 |
± 0.20 |
± 0.20 |
± 0.130 |
± 0.140 |
± 0.150 |
|
> 3.00 |
≤ 5.00 |
± 0.22 |
± 0.24 |
± 0.25 |
± 0.17 |
± 0.18 |
± 0.19 |
|
> 5.00 |
≤ 6.50 |
± 0.24 |
± 0.25 |
± 0.26 |
± 0.19 |
± 0.20 |
± 0.21 |
1. Around cold-rolled welds an increase of 20% at the most over the thickness tolerance is allowed
over a length of 15 metres.
2. For zinc coatings ≥ Z450 the tolerance on the thickness must be raised by 0.02mm
The following tolerances apply to the steel grades with a minimum value for the yield strength 360N/mm² ≤ Rp0.2 ≤ 420N/mm².
|
Nominal |
Normal tolerances for a nominal width of 1 2 |
Special tolerances (S) for a |
|||||
|---|---|---|---|---|---|---|---|
|
|
≤ 1200 |
> 1200 |
> 1500 |
≤ 1200 |
> 1200 |
> 1500 |
|
|
|
≤ 1500 |
|
|
≤ 1500 |
|
||
|
≥ 0.35 |
≤ 0.40 |
± 0.05 |
± 0.06 |
- |
± 0.040 |
± 0.045 |
- |
|
> 0.40 |
≤ 0.60 |
± 0.06 |
± 0.07 |
± 0.08 |
± 0.045 |
± 0.050 |
± 0.060 |
|
> 0.60 |
≤ 0.80 |
± 0.07 |
± 0.08 |
± 0.09 |
± 0.050 |
± 0.060 |
± 0.070 |
|
> 0.80 |
≤ 1.00 |
± 0.08 |
± 0.09 |
± 0.11 |
± 0.060 |
± 0.070 |
± 0.080 |
|
> 1.00 |
≤ 1.20 |
± 0.10 |
± 0.11 |
± 0.12 |
± 0.070 |
± 0.080 |
± 0.090 |
|
> 1.20 |
≤ 1.60 |
± 0.13 |
± 0.14 |
± 0.16 |
± 0.080 |
± 0.090 |
± 0.110 |
|
> 1.60 |
≤ 2.00 |
± 0.16 |
± 0.17 |
± 0.19 |
± 0.090 |
± 0.110 |
± 0.120 |
|
> 2.00 |
≤ 2.50 |
± 0.18 |
± 0.20 |
± 0.21 |
± 0.120 |
± 0.130 |
± 0.140 |
|
> 2.50 |
≤ 3.00 |
± 0.22 |
± 0.22 |
± 0.23 |
± 0.140 |
± 0.150 |
± 0.160 |
|
> 3.00 |
≤ 5.00 |
± 0.22 |
± 0.24 |
± 0.25 |
± 0.17 |
± 0.18 |
± 0.19 |
|
> 5.00 |
≤ 6.50 |
± 0.24 |
± 0.25 |
± 0.26 |
± 0.19 |
± 0.20 |
± 0.21 |
1. Around cold-rolled welds an increase of 20% at the most over the thickness tolerance is allowed
over a length of 15 metres.
2. For zinc coatings ≥ Z450 the tolerance on the thickness must be raised by 0.02mm.
The following tolerances apply to the steel grades with a minimum value for the yield strength 420N/mm² < Rp0.2 ≤ 900N/mm².
|
Nominal |
Normal tolerances for a nominal width of 1 2 |
Special tolerances (S) for a |
|||||
|---|---|---|---|---|---|---|---|
|
|
≤ 1200 |
> 1200 |
> 1500 |
≤ 1200 |
> 1200 |
> 1500 |
|
|
|
≤ 1500 |
|
|
≤ 1500 |
|
||
|
≥ 0.35 |
≤ 0.40 |
± 0.06 |
± 0.07 |
- |
± 0.045 |
± 0.050 |
- |
|
> 0.40 |
≤ 0.60 |
± 0.06 |
± 0.08 |
± 0.09 |
± 0.050 |
± 0.060 |
± 0.070 |
|
> 0.60 |
≤ 0.80 |
± 0.07 |
± 0.09 |
± 0.11 |
± 0.060 |
± 0.070 |
± 0.080 |
|
> 0.80 |
≤ 1.00 |
± 0.09 |
± 0.11 |
± 0.12 |
± 0.070 |
± 0.080 |
± 0.090 |
|
> 1.00 |
≤ 1.20 |
± 0.11 |
± 0.13 |
± 0.14 |
± 0.080 |
± 0.090 |
± 0.110 |
|
> 1.20 |
≤ 1.60 |
± 0.15 |
± 0.16 |
± 0.18 |
± 0.090 |
± 0.110 |
± 0.120 |
|
> 1.60 |
≤ 2.00 |
± 0.18 |
± 0.19 |
± 0.21 |
± 0.110 |
± 0.120 |
± 0.140 |
|
> 2.00 |
≤ 2.50 |
± 0.21 |
± 0.22 |
± 0.24 |
± 0.140 |
± 0.150 |
± 0.170 |
|
> 2.50 |
≤ 3.00 |
± 0.24 |
± 0.25 |
± 0.26 |
± 0.170 |
± 0.180 |
± 0.190 |
|
> 3.00 |
≤ 5.00 |
± 0.26 |
± 0.27 |
± 0.28 |
± 0.23 |
± 0.24 |
± 0.26 |
|
> 5.00 |
≤ 6.50 |
± 0.28 |
± 0.29 |
± 0.30 |
± 0.25 |
± 0.26 |
± 0.28 |
1. Around cold-rolled welds an increase of 20% at the most over the thickness tolerance is allowed
over a length of 15 metres.
2. For zinc coatings ≥ Z450 the tolerance on the thickness must be raised by 0.02mm.
Tolerances on width
The tolerances on width comply with standard EN 10143: 2006
MagiZinc is not included in the standard, but fulfils EN 10143: 2006 requirements.
Tighter tolerances are available on request.
Tolerances in mm.
| Nominal width w | Normal tolerances | Special tolerances (S) |
|---|---|---|
| 600 ≤ w ≤ 1200 | + 5 0 |
+ 2 0 |
| 1200 < w ≤ 1500 | + 6 0 |
+ 2 0 |
| 1500 < w ≤ 1800 | + 7 0 |
+ 3 0 |
| w > 1800 | + 8 0 |
+ 3 0 |
Dimensions and coil weights
| Description | Availability |
|---|---|
| Coil diameter inner | 610mm |
| (508 mm available on request) | |
| Coil diameter outer | 10/7 x width max |
| 1000mm min. | |
| 2500mm max. | |
| Coil weight | 30t max. |
| 33t max available after consultation | |
| Coil weight limited by maximum outer diameter | |
| Maximum weight allowed by road/rail transport | |
| Some products may have different coil weight ranges available | |
| Usually a minimum coil weight up to 85% of the maximum coil weight can be requested | |
| KIM: width ≤ 1200 mm | 11.7 - 22.7 kg/mm width |
| KIM: 1200mm < width ≤ 1700 mm | 11.6 - 21.7 kg/mm width |
| KIM: width > 1700 mm | 11.0 kg/mm width and 11.6 - 21.7 kg/mm width |
| Minimum tonnage per order | Refer to price list for order quantity details |
| Minimum order quantities may apply |
EN-EngineeringAutomotive-Product-Metallic coated-All grades Further processingTSE
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
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.