Cold-rolled
Structural steel

Our cold-rolled structural steel is suitable for a wide range of applications.

It has a guaranteed minimum strength and offers good weldability for ease of processing.

Applications

  • Domestic appliances
  • Furniture
  • Tubing
  • Racking and shelving
  • Pressure vessels
Cold-rolled coil
Cold-rolled annealing line, Port Talbot, UK
Product specification
Structural steel is currently available in the following grades

EN_US-Engineering-Product-Cold-rolled-Structural steel-SS Grade 25

SS Grade 25
Specification details for SS Grade 25

EN_US-Engineering-Product-Cold-rolled-All Grades Surface aspects

Surface aspects

Surface aspects

Surface quality according to ASTM A1008: 2013 and ASTM A568: 2011
 

Surface quality class 1 (exposed):

The better side must be free of defects that can spoil the uniform appearance of a high quality paint or of an electrolytic coating. The other side must at least conform to surface quality unexposed.
 

Surface quality class 2 (unexposed):

Defects that do not influence the formability or the application of surface coatings are permitted. These are defects such as pores, minor scratches,
slight indentations, small grooves or slight discolouration.
 

Inspected side

As a rule, the upper side of the strip is inspected; on request, the strip can be wound so that the inspected side is the underside.

Surface texture/roughness

Cold-rolled annealed and skin passed steel is available in several surface textures. All textures are available.
Unless specified otherwise, Tata Steel will supply ‘Regular matte’.
 

Description Roughness µinch CLA
Commercial bright ≤ 10
H - dull ≤ 16
Light matte ≤ 36
Regular matte 24 - 76
Rough matte 64 - 100

Preservative oil

The standard oil applied by Tata Steel acts as a protective coating.
Other types of oil may be available to meet your requirement.

Tata Steel offers a range of oiling levels:
Lightly oiled:  55 mg/ft2 per side
Regular oiled:  110 mg/ft2 per side

Other oiling levels are available on request. Tata Steel is not responsible for the risk of corrosion during storage or shipment if material is ordered in the unoiled condition.

Surface cleanliness

Tata Steel can guarantee improved surface cleanliness on request for batch-annealed products. The cleanliness is tested with a tape test, in which the loss of reflection is measured. The reflection gives an indication of the oil residue on the annealed product.
Two levels of loss of reflectivity are available for batch annealed products: a maximum of 20% or a maximum of 30%. Continuously-annealed products typically exhibit a loss of reflection up to around 10%.

 

EN_US-Engineering-Product-Cold-Rolled-Structural steel-SS Grade 25-Properties

Properties

Properties

Mechanical properties

Cold-rolled structural steel has the following mechanical properties (skin passed) - these are typically measured longitudinal to the rolling direction:

ASTM A 1008: 2013 Grade   SS Grade 25
Min. yield strength ksi 25
Min. tensile strength ksi 42
Min. elongation 2 inch % 26
 

Chemical composition

Heat analysis with maximum values in weight percentages:

ASTM A 1008: 2013 Grade SS Grade 25
C Max. 0.2
Mn Max. 0.6
P Max. 0.035
S Max. 0.035
Cr Max. 0.15
Ni Max. 0.2
Mo Max. 0.06
V Max. 0.008
Cb Max. 0.008
Ti Max. 0.025

EN_US-Engineering-Product-Cold-Rolled-Structural steel-SS Grade 25-Dimensions

Dimensions

Dimensions

For continuously annealed (CA) products.
Dimensions in inches.

Thickness Max. width
From - up to SS Grade 25
0.015 - 0.016 50
0.016 - 0.017 52
0.017 - 0.020 55
0.020 - 0.026 60
0.026 - 0.028 64
0.028 - 0.030 66
0.030 - 0.039 71
0.039 - 0.063 71
0.063 - 0.071 61
0.071 - 0.079 59
Minimum width is 36 inch.

Tolerances on thickness

Tolerances comply with standard ASTM A 568: 2011 - excluding 1 inch minimum edge distance.
Tighter tolerances are available, please contact us.

 

EN_US-Engineering-Product-Cold-rolled-All grades Shape and dimensional tolerances

Shape and dimensional tolerances

Shape and dimensional tolerances

Tolerances on thickness

Tata Steel can supply to full thickness tolerance specified in ASTM A568: 2015 / A635: 2015.
Thickness tolerances over, no tolerance under.
Tighter tolerances are available as shown below:

Carbon Steel Thickness tolerances available
ASTM A 568 (2015) / A635 (2015)
20 - 40 40 - 48 48 - 60 60 - 72 >72
0.031 - 0.051 0.01 0.01 0.01 0.01 0.01
0.051 - 0.057 0.01 0.012 0.012 0.014 0.014
0.057 - 0.071 0.012 0.012 0.014 0.014 0.014
0.071 - 0.098 0.014 0.014 0.014 0.016 0.016
0.098 - 0.179 0.014 0.016 0.016 0.016 0.016
0.179 - 0.229 0.016 0.018 0.02 0.022 0.024
0.229 - 0.313 0.022 0.024 0.024 0.026 0.03
0.313 - 0.375 0.024 0.026 0.028 0.03 0.032
0.375 - 0.500 0.028 0.028 0.03 0.032 0.036
0.500 - 0.625 0.03 0.03 0.032 0.036 0.038
0.625 - 1.000 0.032 0.032 0.034 0.038 0.04

 

 

HSLA Thickness tolerances available
ASTM A568 (2007) / A635 (2007)
20 - 32 32 - 40 40 - 48 48 - 60 60 - 72 72 - 80 > 80
0.031 - 0.051 0.012 0.012 0.012 0.012 0.012 0.012 0.012
0.051 - 0.059 0.012 0.012 0.014 0.014 0.014 0.014 0.014
0.059 - 0.070 0.014 0.014 0.014 0.014 0.016 0.016 0.016
0.070 - 0.082 0.014 0.014 0.014 0.014 0.016 0.016 0.016
0.082 - 0.098 0.014 0.016 0.116 0.016 0.018 0.018 0.02
0.098 - 0.179 0.016 0.016 0.02 0.02 0.022 0.024 0.024
0.179 - 0.229 0.018 0.018 0.02 0.02 0.022 0.024 0.024
0.229 - 0.313 0.022 0.022 0.024 0.024 0.026 0.03 0.03
0.313 - 0.375 0.024 0.024 0.026 0.028 0.03 0.032 0.032
0.375 - 0.500 0.028 0.028 0.028 0.03 0.032 0.036 0.036
0.500 - 0.625 0.03 0.03 0.03 0.032 0.036 0.038 0.038
0.625 - 1.000 0.032 0.032 0.032 0.034 0.038 0.04 0.04

 

Option for maximum crown values

At the time of ordering, specific agreements can be made on the crown of hot-rolled strip.

 

Tolerances on width, edge camber and flatness

Material will be supplied conforming to the tolerances specified in ASTM A568 (2007) / A635 (2007). Width tolerances are over, no tolerance under.

Width tolerances available  
Carbon steel ASTM A568: 2015 / A635: 2015
Mill edge Cut edge
24 - 26 0.812 0.125
26 - 28 0.937 0.125
28 - 30 0.937 0.125
30 - 35 1.125 0.187
35 - 48 1.125 0.187
48 - 50 1.125 0.25
50 - 60 1.5 0.25
60 - 65 1.5 0.312
65 - 70 1.5 0.312
70 - 78 1.5 0.312
78 - 80 1.875 0.312
80 - 82 1.875 0.375

 

Width tolerances available    
HSLA ASTM A568: 2007 / A635: 2007
Mill edge Cut edge
24 - 26 0.812 0.125
26 - 28 0.937 0.125
28 - 30 1.125 0.125
30 - 35 1.125 0.187
35 - 48 1.25 0.187
48 - 50 1.25 0.25
50 - 60 1.5 0.25
60 - 65 1.625 0.312
65 - 70 1.75 0.312
70 - 78 1.875 0.312
78 - 80 2 0.375
80 - 82 1.875 0.375

 

 

Dimensions and coil weights

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

Description Capability
Coil diameter inner non-pickled 30 inch
Coil diameter inner pickled 24 inch standard
30 inch on request
Tolerance on inner diameter +0/-2 inch
Coil diameter outer non-pickled Outer diameter available is 10/7 x width to reduce possibility of coil tipping over
Max. 86 inch
Min. 41.5 inch
Coil diameter outer pickled and oiled Outer diameter available is 10/7 x width to reduce possibility of coil tipping over
Max. 86 inch
Min. 65 inch
Coil weight Max. 75,000 lbs
Maximum coil weight limits can vary due to
transport limits and outer coil diameter
Some HR products may have different coil weight ranges
PIW  width ≤ 47 inch 868 - 1288 PIW width
PIW  47 inch < width ≤ 67 inch 868 - 1215 PIW width
PIW  width > 67 inch 616 PIW width and 868 - 1215 PIW width
Minimum tonnage per order Refer to price list for order quantity details
Minimum order quantities may apply

 

 

 

EN_US-Engineering-Product-Cold-rolled-Structural steel-SS Grade 30

SS Grade 30
Specification details for SS Grade 30

EN_US-Engineering-Product-Cold-rolled-All Grades Surface aspects

Surface aspects

Surface aspects

Surface quality according to ASTM A1008: 2013 and ASTM A568: 2011
 

Surface quality class 1 (exposed):

The better side must be free of defects that can spoil the uniform appearance of a high quality paint or of an electrolytic coating. The other side must at least conform to surface quality unexposed.
 

Surface quality class 2 (unexposed):

Defects that do not influence the formability or the application of surface coatings are permitted. These are defects such as pores, minor scratches,
slight indentations, small grooves or slight discolouration.
 

Inspected side

As a rule, the upper side of the strip is inspected; on request, the strip can be wound so that the inspected side is the underside.

Surface texture/roughness

Cold-rolled annealed and skin passed steel is available in several surface textures. All textures are available.
Unless specified otherwise, Tata Steel will supply ‘Regular matte’.
 

Description Roughness µinch CLA
Commercial bright ≤ 10
H - dull ≤ 16
Light matte ≤ 36
Regular matte 24 - 76
Rough matte 64 - 100

Preservative oil

The standard oil applied by Tata Steel acts as a protective coating.
Other types of oil may be available to meet your requirement.

Tata Steel offers a range of oiling levels:
Lightly oiled:  55 mg/ft2 per side
Regular oiled:  110 mg/ft2 per side

Other oiling levels are available on request. Tata Steel is not responsible for the risk of corrosion during storage or shipment if material is ordered in the unoiled condition.

Surface cleanliness

Tata Steel can guarantee improved surface cleanliness on request for batch-annealed products. The cleanliness is tested with a tape test, in which the loss of reflection is measured. The reflection gives an indication of the oil residue on the annealed product.
Two levels of loss of reflectivity are available for batch annealed products: a maximum of 20% or a maximum of 30%. Continuously-annealed products typically exhibit a loss of reflection up to around 10%.

 

EN_US-Engineering-Product-Cold-Rolled-Structural steel-SS Grade 30-Properties

Properties

Properties

Mechanical properties

Cold-rolled structural steel has the following mechanical properties (skin passed) - these are typically measured longitudinal to the rolling direction:

ASTM A 1008: 2013 Grade   SS Grade 30
Min. yield strength ksi 30
Min. tensile strength ksi 45
Min. elongation 2 inch % 24
 

Chemical composition

Heat analysis with maximum values in weight percentages:

ASTM A 1008: 2013 Grade SS Grade 30
C Max. 0.2
Mn Max. 0.6
P Max. 0.035
S Max. 0.035
Cr Max. 0.15
Ni Max. 0.2
Mo Max. 0.06
V Max. 0.008
Cb Max. 0.008
Ti Max. 0.025

 

EN_US-Engineering-Product-Cold-Rolled-Structural steel-SS Grade 30-Dimensions

Dimensions

Dimensions

For continuously annealed (CA) products.
Dimensions in inches.

From - up to SS Grade 30
0.015 - 0.016 -
0.016 - 0.017 52
0.017 - 0.020 55
0.020 - 0.026 60
0.026 - 0.028 68
0.028 - 0.030 68
0.030 - 0.039 68
0.039 - 0.063 71
0.063 - 0.071 57
0.071 - 0.079 57
Minimum width is 36 inch.

Tolerances on thickness

Tolerances comply with standard ASTM A 568: 2011 - excluding 1 inch minimum edge distance.
Tighter tolerances are available, please contact us.

 

EN_US-Engineering-Product-Cold-rolled-All grades Shape and dimensional tolerances

Shape and dimensional tolerances

Shape and dimensional tolerances

Tolerances on thickness

Tata Steel can supply to full thickness tolerance specified in ASTM A568: 2015 / A635: 2015.
Thickness tolerances over, no tolerance under.
Tighter tolerances are available as shown below:

Carbon Steel Thickness tolerances available
ASTM A 568 (2015) / A635 (2015)
20 - 40 40 - 48 48 - 60 60 - 72 >72
0.031 - 0.051 0.01 0.01 0.01 0.01 0.01
0.051 - 0.057 0.01 0.012 0.012 0.014 0.014
0.057 - 0.071 0.012 0.012 0.014 0.014 0.014
0.071 - 0.098 0.014 0.014 0.014 0.016 0.016
0.098 - 0.179 0.014 0.016 0.016 0.016 0.016
0.179 - 0.229 0.016 0.018 0.02 0.022 0.024
0.229 - 0.313 0.022 0.024 0.024 0.026 0.03
0.313 - 0.375 0.024 0.026 0.028 0.03 0.032
0.375 - 0.500 0.028 0.028 0.03 0.032 0.036
0.500 - 0.625 0.03 0.03 0.032 0.036 0.038
0.625 - 1.000 0.032 0.032 0.034 0.038 0.04

 

 

HSLA Thickness tolerances available
ASTM A568 (2007) / A635 (2007)
20 - 32 32 - 40 40 - 48 48 - 60 60 - 72 72 - 80 > 80
0.031 - 0.051 0.012 0.012 0.012 0.012 0.012 0.012 0.012
0.051 - 0.059 0.012 0.012 0.014 0.014 0.014 0.014 0.014
0.059 - 0.070 0.014 0.014 0.014 0.014 0.016 0.016 0.016
0.070 - 0.082 0.014 0.014 0.014 0.014 0.016 0.016 0.016
0.082 - 0.098 0.014 0.016 0.116 0.016 0.018 0.018 0.02
0.098 - 0.179 0.016 0.016 0.02 0.02 0.022 0.024 0.024
0.179 - 0.229 0.018 0.018 0.02 0.02 0.022 0.024 0.024
0.229 - 0.313 0.022 0.022 0.024 0.024 0.026 0.03 0.03
0.313 - 0.375 0.024 0.024 0.026 0.028 0.03 0.032 0.032
0.375 - 0.500 0.028 0.028 0.028 0.03 0.032 0.036 0.036
0.500 - 0.625 0.03 0.03 0.03 0.032 0.036 0.038 0.038
0.625 - 1.000 0.032 0.032 0.032 0.034 0.038 0.04 0.04

 

Option for maximum crown values

At the time of ordering, specific agreements can be made on the crown of hot-rolled strip.

 

Tolerances on width, edge camber and flatness

Material will be supplied conforming to the tolerances specified in ASTM A568 (2007) / A635 (2007). Width tolerances are over, no tolerance under.

Width tolerances available  
Carbon steel ASTM A568: 2015 / A635: 2015
Mill edge Cut edge
24 - 26 0.812 0.125
26 - 28 0.937 0.125
28 - 30 0.937 0.125
30 - 35 1.125 0.187
35 - 48 1.125 0.187
48 - 50 1.125 0.25
50 - 60 1.5 0.25
60 - 65 1.5 0.312
65 - 70 1.5 0.312
70 - 78 1.5 0.312
78 - 80 1.875 0.312
80 - 82 1.875 0.375

 

Width tolerances available    
HSLA ASTM A568: 2007 / A635: 2007
Mill edge Cut edge
24 - 26 0.812 0.125
26 - 28 0.937 0.125
28 - 30 1.125 0.125
30 - 35 1.125 0.187
35 - 48 1.25 0.187
48 - 50 1.25 0.25
50 - 60 1.5 0.25
60 - 65 1.625 0.312
65 - 70 1.75 0.312
70 - 78 1.875 0.312
78 - 80 2 0.375
80 - 82 1.875 0.375

 

 

Dimensions and coil weights

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

Description Capability
Coil diameter inner non-pickled 30 inch
Coil diameter inner pickled 24 inch standard
30 inch on request
Tolerance on inner diameter +0/-2 inch
Coil diameter outer non-pickled Outer diameter available is 10/7 x width to reduce possibility of coil tipping over
Max. 86 inch
Min. 41.5 inch
Coil diameter outer pickled and oiled Outer diameter available is 10/7 x width to reduce possibility of coil tipping over
Max. 86 inch
Min. 65 inch
Coil weight Max. 75,000 lbs
Maximum coil weight limits can vary due to
transport limits and outer coil diameter
Some HR products may have different coil weight ranges
PIW  width ≤ 47 inch 868 - 1288 PIW width
PIW  47 inch < width ≤ 67 inch 868 - 1215 PIW width
PIW  width > 67 inch 616 PIW width and 868 - 1215 PIW width
Minimum tonnage per order Refer to price list for order quantity details
Minimum order quantities may apply