EN-Product-Metallic coated-Structural steel-All Grades OverviewTSUK
Relationship with standards
Galvanised structural steel complies with the following European standard
EN 10346: 2015 |
|---|
Grade |
| S220GD+Z/+ZM |
| S250GD+Z/+ZM |
| S280GD+Z/+ZM |
| S320GD+Z/+ZM |
| S350GD+Z/+ZM |
| S390GD+Z/+ZM |
| S420GD+Z/+ZM |
| S450GD+Z/+ZM |
| S550GD+Z |
For products produced in the Netherlands click here.
EN-Product-Metallic coated-All Grades Coatings Surface aspectsTSUK
Coatings
Three types of metallic coating are available:
Pure zinc
Galvanised steel (Z/GI) is coated with an almost pure zinc coating (>99% zinc).
Zinc-iron alloy
Produced in the Netherlands. For further information click here.
MagiZinc
MagiZinc steel (ZM) is coated with a zinc coating containing additional magnesium and aluminium.
Coating weight
| Coating | Minimum | Maximum |
|---|---|---|
| Pure zinc (Z/GI) | 90 (6 µm/side) | 275 (20 µm/side) |
| MagiZinc (ZM)1 | 70 (5 µm/side) | 310 (22 µm/side) |
Coating weight measured in g/m2 double-sided (µm, per side).
Surface quality
Surface quality complies with standard: EN 10346:2015. Galvanised steels are available in surface quality A, B or C.
Also, Serica FLO® surface quality produced in the Netherlands. For further information click here.
Surface quality A: as coated surface
Imperfections such as pimples, marks, scratches, pits, variations in surface appearance, dark spots, stripe marks and light passivation stains are permissible.
Stretch levelling breaks or run-off marks may appear. Coil breaks and stretcher strains may also appear.
Surface quality B: improved surface
With this surface quality, 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 quality C: best quality surface
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
Pure zinc
MA: minimised spangle, as coated surface (Z/GI).
MB: minimised spangle, improved surface (Z/GI).
MC: minimised spangle, best quality surface (Z/GI).
MagiZinc®
A : as coated surface (ZM).
B : improved surface (ZM).
C: best quality surface (ZM).
Surface roughness
Metallic coated steel (with the exception of galvanised steel with standard surface (MA) can be supplied in various grades of roughness – please contact us for more details. 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 O, C and CO.
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 | Capability |
|---|---|
| Pure zinc (Z/GI) | 0.5 - 1.6 g/m2 |
| MagiZinc® (ZM) | 0.5 - 1.6 g/m2 |
Other oiling levels are available on request.
Chromium-free passivation (C)
This surface treatment temporarily protects the zinc-coated material against white rust during transportation and storage (not applicable to all qualities and dimensions – please contact us for details).
Chromium-free passivation and oiled (CO)
Please request this combination of surface treatments if you require extra protection against white rust formation (not applicable to all qualities and dimensions – please contact us for details).
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.
Currently Under development, please contact us regarding further information
Untreated (U)
Please contact us regarding the availability of untreated coils.
EN-Product-Metallic Coated-Structural steel-S420GD-Properties TSUK
Properties
Mechanical properties
Metallic coated structural steel grades have the following mechanical properties (skin-passed) - these are measured longitudinal to the rolling direction:
| EN 10346: 2015 | Grade | S420GD+Z/+ZM |
|---|---|---|
| Min. yield strength Rp0.2 | N/mm² | 420 |
| Min. tensile strength Rm | N/mm² | 480 |
| Elongation | % | 15 |
If the yield point is pronounced, the values apply to the upper yield point ReH.
A range of 140 N/mm² can be expected for tensile strength.
Elongation after fracture uses test piece length L0 = 80 mm.
For a thickness t ≤ 0.7 mm the minimum elongation after fracture is decreased by 2% and for a thickness t ≤ 0.5mm the minimum elongation after fracture is decreased by 4%.
Chemical composition
Tata Steel supplies the following cast analysis with maximum values unless otherwise shown:
| EN 10346: 2015 | Grade | S420GD+Z/+ZM |
|---|---|---|
| C | Max. | 0.20 |
| Mn | Max. | 1.70 |
| P | Max. | 0.10 |
| S | Max. | 0.045 |
| Si | Max. | 0.60 |
All values in weight%.
EN-Product-Metallic Coated-Structural steel-S420GD-Dimensions TSUK
Dimensional capability
Galvanised (+Z) products
Dimensions in mm.
| Thickness | Max. width |
|---|---|
| From - up to | S420GD |
| 0.70 - 1.00 | 1250 |
| 1.00 - 1.20 | 1300 |
| 1.20 - 1.40 | 1330 |
| 1.40 - 1.70 | 1360 |
| 1.70 - 2.00 | 1399 |
For widths below 900 mm, please contact us.
For products produced in the Netherlands click here.
MagiZinc® (+ZM) products
Dimensions in mm.
| Thickness | Max. width |
|---|---|
| From - up to | S420GD |
| 0.70 - 0.80 | 1299 |
| 0.80 - 0.90 | 1349 |
| 0.90 - 2.00 | 1399 |
For widths below 1100 mm please contact us.
For products produced in the Netherlands click here.
Tolerances
Tolerances comply with standard EN 10143: 2006.
Tighter tolerances are available - please contact us for details.
EN-Product-Metallic Coated-All Grades Shape and Dimensional TolerancesTSUK
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. |
| 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 | |
| Minimum tonnage per order | Refer to price list for order quantity details |
| Minimum order quantities may apply |
EN-Product-Metallic coated-All grades Further processingTSUK
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 6m | up to 6m |
| Locations | UK Ireland Netherlands Germany France Spain Sweden Norway Finland | UK Ireland Netherlands Germany France Spain Sweden Norway Finland | UK Netherlands |
For further information please visit our service centre webpages.
EN-Product-Metallic coated-Structural steel-DownloadsTSUK
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