Structural steel
Tata Steel’s metallic coated structural steel is suitable for a wide range of applications.
For exceptionally demanding applications, our choice of grades includes products that exceed the minimum strength levels specified in the national standards. MagiZinc® improves corrosion resistance with half the thickness of conventional zinc coatings, increasing yield, reducing cost and facilitating stronger, lighter products.
Applications
- Agricultural components
- Building components
- Domestic appliances
- Furniture
EN_US-Product-Metallic coated-Structural steel-Grade 33 TSUK
EN_US-Product-Metallic coated-Structural steel-All Grades OverviewTSUK
Relationship with standards
Galvanised structural steel complies with the following standards
| ASTM A653: 2022 |
|---|
| Grade |
| SS GRADE 33 |
| SS GRADE 371 |
| SS GRADE 40 |
| SS GRADE 801 |
1 Produced in the Netherlands. For further information click here.
EN_US-Product-Metallic coated-All Grades Coatings Surface aspectsTSUK
Surface Aspects
Surface quality
Surface quality complies with ASTM standards A653: 2022 and A924: 2022. The products can be delivered with the following coating/surface types:
Minimized spangle (standard 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.
Minimized spangle temper rolled (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.
Extra smooth (best surface, exposed)
Surface quality is obtained by skin passing. The controlled surface shall make it possible to apply a uniform high-class paint finish. The other surface shall at least have the characteristics of surface quality B. As a rule, the upper side of the strip is inspected; on request the strip can be turned over so that the underside is the inspected side.
MagiZinc® is currently only available with standard or improved surface qualities.
Surface roughness
Metallic coated steel will normally be supplied with a regular matte finish:
| Description | Roughness µinch CLA |
|---|---|
| regular matte | 30 - 61 |
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 may be available to meet your requirement – please contact us.
Tata Steel offers the following range of oiling levels for all coating types:
Lightly oiled: 65 mg/ft2 per side
Regular oiled: 100 mg/ft2 per side
Other oiling levels are available on request. If no amount is indicated in your specification, a regular amount of oil will be applied.
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 – please consult us).
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 – please consult us).
EN_US-Product-Metallic coated-Structural steel-Grade 33-Properties TSUK
Properties
Mechanical properties
Galvanized structural steel has the following mechanical properties - these are measured parallel to the rolling direction:
| ASTM A653: 2022 | Min. yield strength | Min. tensile strength | Min. elogation after 2 inch |
|---|---|---|---|
| SS Grade | ksi | ksi | % |
| Grade 33 | 33 | 45 | 20 |
Chemical composition
Tata Steel supplies the following heat analysis with values in weight percentages:
| ASTM A653 | SS Grade | Grade 33 |
|---|---|---|
| C | Max. | 0.2 |
| Mn | Max. | 1.35 |
| P | Max. | 0.10 |
| S | Max. | 0.04 |
| Cu | Max. | 0.25 |
| Ni | Max. | 0.2 |
| Cr | Max. | 0.15 |
| Mo | Max. | 0.06 |
| V | Max. | 0.008 |
| Cb | Max. | 0.008 |
| Ti | Max. | 0.025 |
EN_US-Product-Metallic coated-Structural steel-Grade 33-Dimensions TSUK
Dimensions
Galvanized dimensional capability.
Dimensions in inches.
| Thickness | Max. width |
|---|---|
| from - up to | Grade 33 |
| 0.024 - 0.026 | 60 |
| 0.026 - 0.028 | 61 |
| 0.028 - 0.030 | 64 |
| 0.030 - 0.035 | 68 |
| 0.035 - 0.053 | 70 |
| 0.053 - 0.059 | 69 |
| 0.059 - 0.063 | 64 |
| 0.063 - 0.071 | 61 |
| 0.071 - 0.079 | 60 |
The minimum width is 36 inch.
Please contact us for the availability of lower widths
For products produced in the Netherlands click here.
MagiZinc® dimensional capability.
Dimensions in inches.
| Thickness | Max. width |
|---|---|
| from - up to | Grade 33 |
| 0.024 - 0.026 | 60 |
| 0.026 - 0.028 | 61 |
| 0.028 - 0.030 | 64 |
| 0.030 - 0.035 | 68 |
| 0.035 - 0.053 | 70 |
| 0.053 - 0.059 | 69 |
| 0.059 - 0.063 | 64 |
| 0.063 - 0.071 | 61 |
| 0.071 - 0.079 | 60 |
The minimum width is 36 inch.
For products produced in the Netherlands click here.
Tolerances on thickness
The tolerances comply with standard ASTM A653: 2022
Tighter tolerances are available on request.
EN_US-Product-Metallic coated-All grades Shape and dimensional tolerancesTSUK
Shape and dimensional tolerances
Tolerances on thickness
The thickness tolerances comply with standard ASTM A924: 2022 – 1 inch minimum edge distance.
Thickness tolerances over, no tolerance under. Dimensions in inches:
| Specified thickness | Normal tolerances for a specified width of | |||
|---|---|---|---|---|
| From - up to | 0 - 32 | 32 - 40 | 40 - 60 | 60 - 75 |
| 0.000 - 0.023 | 0.003 | 0.003 | 0.003 | 0.003 |
| 0.023 - 0.043 | 0.004 | 0.004 | 0.004 | 0.004 |
| 0.043 - 0.061 | 0.005 | 0.005 | 0.005 | 0.005 |
| 0.061 - 0.075 | 0.006 | 0.006 | 0.006 | 0.006 |
| 0.075 - 0.101 | 0.007 | 0.008 | 0.0108 | 0.009 |
| 0.101 - 0.187 | 0.012 | 0.012 | 0.014 | 0.014 |
Around cold-rolled welds an increase of 20 % at the most over the thickness tolerance is allowed over a length of 50 ft.
Thickness tolerance availability is shown below:
| Thickness tolerance | Availability |
|---|---|
| Full thickness tolerance | Available |
| Special thickness tolerance | Refer before ordering |
| 50% of full thickness tolerance | Refer before ordering |
Tolerances on width
The tolerances for width comply with standard ASTM A924: 2022.
Thickness tolerances over, no tolerance under. Dimensions in inches:
| Specified width | Tolerances for a specified width of | |
|---|---|---|
| From - up to | Mill edge | Cut edge |
| 30 - 48 | 0.71 | 0.187 |
| 48 - 60 | 0.71 | 0.25 |
| 60 - 75 | 0.71 | 0.312 |
MagiZinc® is not included in the standard. Tighter tolerances are available on request.
Dimensions and coil weights
| Description | Capabilities |
|---|---|
| Inside diameter | standard 24 inches, 20 inches on request |
| Outside diameter | maximum 98 inches and at the most |
| 10/7 x width | |
| Coil weight | maximum 66,000 lbs. |
Coating layer
| Coating layer | Coating weight total both sides |
|---|---|
| oz/ft2 | |
| G40 | 0.4 |
| G60 | 0.6 |
| G90 | 0.9 |
Other coating weights are available. Please contact us to discuss your requirements.
EN_US-Product-Metallic coated-Structural steel-Grade 40 TSUK
EN_US-Product-Metallic coated-Structural steel-All Grades OverviewTSUK
Relationship with standards
Galvanised structural steel complies with the following standards
| ASTM A653: 2022 |
|---|
| Grade |
| SS GRADE 33 |
| SS GRADE 371 |
| SS GRADE 40 |
| SS GRADE 801 |
1 Produced in the Netherlands. For further information click here.
EN_US-Product-Metallic coated-All Grades Coatings Surface aspectsTSUK
Surface Aspects
Surface quality
Surface quality complies with ASTM standards A653: 2022 and A924: 2022. The products can be delivered with the following coating/surface types:
Minimized spangle (standard 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.
Minimized spangle temper rolled (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.
Extra smooth (best surface, exposed)
Surface quality is obtained by skin passing. The controlled surface shall make it possible to apply a uniform high-class paint finish. The other surface shall at least have the characteristics of surface quality B. As a rule, the upper side of the strip is inspected; on request the strip can be turned over so that the underside is the inspected side.
MagiZinc® is currently only available with standard or improved surface qualities.
Surface roughness
Metallic coated steel will normally be supplied with a regular matte finish:
| Description | Roughness µinch CLA |
|---|---|
| regular matte | 30 - 61 |
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 may be available to meet your requirement – please contact us.
Tata Steel offers the following range of oiling levels for all coating types:
Lightly oiled: 65 mg/ft2 per side
Regular oiled: 100 mg/ft2 per side
Other oiling levels are available on request. If no amount is indicated in your specification, a regular amount of oil will be applied.
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 – please consult us).
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 – please consult us).
EN_US-Product-Metallic coated-Structural steel-Grade 40-Properties TSUK
Properties
Mechanical properties
Galvanized structural steel has the following mechanical properties - these are measured parallel to the rolling direction:
| ASTM A653: 2022 | Min. yield strength | Min. tensile strength | Min. elogation after 2 inch |
|---|---|---|---|
| SS Grade | ksi | ksi | % |
| Grade 40 | 40 | 55 | 16 |
Chemical composition
Tata Steel supplies the following heat analysis with values in weight percentages:
| ASTM A653: 2022 | SS Grade | Grade 40 |
|---|---|---|
| C | Max. | 0.25 |
| Mn | Max. | 1.35 |
| P | Max. | 0.1 |
| S | Max. | 0.04 |
| Cu | Max. | 0.25 |
| Ni | Max. | 0.2 |
| Cr | Max. | 0.15 |
| Mo | Max. | 0.06 |
| V | Max. | 0.008 |
| Cb | Max. | 0.008 |
| Ti | Max. | 0.025 |
EN_US-Product-Metallic coated-Structural steel-Grade 40-Dimensions TSUK
Dimensions
Galvanized dimensional capability.
Dimensions in inches.
| Thickness | Max. width |
|---|---|
| from - up to | Grade 40 |
| 0.024 - 0.026 | 60 |
| 0.026 - 0.049 | 64 |
| 0.049 - 0.072 | 59 |
| 0.072 - 0.075 | 56 |
| 0.075 - 0.079 | 54 |
The minimum width is 36 inch.
For products produced in the Netherlands click here.
Tolerances on thickness
The tolerances comply with standard ASTM A924: 2022.
Tighter tolerances are available on request.
EN_US-Product-Metallic coated-All grades Shape and dimensional tolerancesTSUK
Shape and dimensional tolerances
Tolerances on thickness
The thickness tolerances comply with standard ASTM A924: 2022 – 1 inch minimum edge distance.
Thickness tolerances over, no tolerance under. Dimensions in inches:
| Specified thickness | Normal tolerances for a specified width of | |||
|---|---|---|---|---|
| From - up to | 0 - 32 | 32 - 40 | 40 - 60 | 60 - 75 |
| 0.000 - 0.023 | 0.003 | 0.003 | 0.003 | 0.003 |
| 0.023 - 0.043 | 0.004 | 0.004 | 0.004 | 0.004 |
| 0.043 - 0.061 | 0.005 | 0.005 | 0.005 | 0.005 |
| 0.061 - 0.075 | 0.006 | 0.006 | 0.006 | 0.006 |
| 0.075 - 0.101 | 0.007 | 0.008 | 0.0108 | 0.009 |
| 0.101 - 0.187 | 0.012 | 0.012 | 0.014 | 0.014 |
Around cold-rolled welds an increase of 20 % at the most over the thickness tolerance is allowed over a length of 50 ft.
Thickness tolerance availability is shown below:
| Thickness tolerance | Availability |
|---|---|
| Full thickness tolerance | Available |
| Special thickness tolerance | Refer before ordering |
| 50% of full thickness tolerance | Refer before ordering |
Tolerances on width
The tolerances for width comply with standard ASTM A924: 2022.
Thickness tolerances over, no tolerance under. Dimensions in inches:
| Specified width | Tolerances for a specified width of | |
|---|---|---|
| From - up to | Mill edge | Cut edge |
| 30 - 48 | 0.71 | 0.187 |
| 48 - 60 | 0.71 | 0.25 |
| 60 - 75 | 0.71 | 0.312 |
MagiZinc® is not included in the standard. Tighter tolerances are available on request.
Dimensions and coil weights
| Description | Capabilities |
|---|---|
| Inside diameter | standard 24 inches, 20 inches on request |
| Outside diameter | maximum 98 inches and at the most |
| 10/7 x width | |
| Coil weight | maximum 66,000 lbs. |
Coating layer
| Coating layer | Coating weight total both sides |
|---|---|
| oz/ft2 | |
| G40 | 0.4 |
| G60 | 0.6 |
| G90 | 0.9 |
Other coating weights are available. Please contact us to discuss your requirements.
EN_US-Product-Metallic Coated-FormingTSUK
Steel for forming
Our cold-rolled forming steels are available in a wide range of grades and corrosion-resistant coatings. Each grade is designed for specific applications and comes with a choice of surface qua
EN_US-Product-Metallic Coated-HSS TSUK
High-strength steel
Our range of metallic coated high-strength steels includes micro-alloyed and bake-hardening grades.
EN_US-Tata Steel in the USA and Canada
Tata Steel in the USA and Canada
Chicago office
475 N. Martingale Road, Suite 330
Schaumburg, IL 60173
United States