Cold-rolled
High-strength steel

Tata Steel offers a range of cold-rolled steels for applications requiring high strength without the weight penalty.

The range comprises micro-alloyed, rephosphorised and carbon manganese high-strength steels in cold-rolled uncoated condition.

These steels are ideal for strong, thin-gauge products.
 

Our Radecol® grades are tailor-made for steel panel radiators offering higher strength and improved shape consistency. 

Cold-rolled coil
Cold-rolled annealing line, Port Talbot, UK
Product specification
High-strength steel is currently available in the following grades

EN_US-Engineering-Product-Cold-rolled-HSS-HSLAS Grade 45

HSLAS Grade 45
Specification details for HSLAS Grade 45

EN_US-Engineering-Product-Cold-rolled-HSS-All Grades Overview

Overview

Overview

These steels are ideal for manufacturing strong, thin gauge products. Our high-strength steels are a popular choice in the automotive industry where they deliver benefits including dent-resistance, crash-resistance, formability and good weldability.
 

Microalloyed grades

Microalloyed grades have high-strength levels through precipitation and grain refinement hardening. Careful use of alloying elements ensures high mechanical resistance and good weldability. There is limited scope for cold forming.

Tata Steel supplies high-strength microalloyed (HSLA) steel which complies with ASTM standard A1008: 2013.
 

Rephosphorized grades

These grades deliver high mechanical resistance and good suitability for cold forming due to solid solution hardening by phosphorus. Our rephosphorized grades are highly suited to the manufacture of car body panels and structural components because of their good resistance to impact and fatigue.
 

Carbon manganese grades

Our carbon manganese product combines high strength with excellent formability for the most difficult cold-forming applications.
 

Applications

  • Automotive parts
  • Construction parts
  • Furniture
  • Precision tubes
     

Relationship with standards

Tata Steel can supply the following cold-rolled high-strength steel grades:

ASTM A1008: 2013
HSLAS Grade
HSLAS Grade 45 class 1
HSLAS Grade 45 class 2
HSLAS Grade 50 class 1
HSLAS Grade 50 class 2
HSLAS Grade 55 class 2
HSLAS-F Grade 50

Please contact us for information on our range of rephosphorized and carbon managenese grades.
 

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-HSS-HSLAS Grade 45-Properties

Properties

Properties
 

Mechanical properties

The available grades have the following mechanical properties measured parallel to the rolling direction (longitudinal test pieces).

ASTM A1008: 2013 Grade HSLAS Grade 45 class 1 HSLAS Grade 45 class 2
Min. yield strength ksi 45 45
Min. tensile strength ksi 60 55
Elongation % 22 22
Min. elongation after fracture A uses test piece length L0 = 2 inches.

Chemical composition

Cold-rolled high-strength steels supplied by Tata Steel comply to the following heat analysis with maximum values in weight percentages unless otherwise shown.

Micro-alloyed grades      
ASTM A1008: 2013 Grade HSLAS Grade 45 class 1 HSLAS Grade 45 class 2
C Max. 0.22 0.15
Mn Max. 1.65 1.65
P Max. 0.04 0.04
S Max. 0.04 0.04
Cu Max. 0.20 0.20
Ni Max. 0.20 0.20
Cr Max. 0.15 0.15
Mo 1 Max. 0.06 0.06
V 1 Min. 0.005 0.005
Cb 1 Min. 0.005 0.005
Ti 1 Min. 0.005 0.005
1. singly or in combination.

EN_US-Engineering-Product-Cold-Rolled-HSS-HSLAS Grade 45-Dimensions

Dimensions

Dimensions

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

Thickness Max. width
From - up to HSLAS Grade 45
  class 1, class 2
0.024 - 0.037 53
0.037 - 0.059 60
0.059 - 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

 

 

 

EN_US-Engineering-Product-Cold-rolled-HSS-HSLAS Grade 50

HSLAS Grade 50
Specification details for HSLAS Grade 50

EN_US-Engineering-Product-Cold-rolled-HSS-All Grades Overview

Overview

Overview

These steels are ideal for manufacturing strong, thin gauge products. Our high-strength steels are a popular choice in the automotive industry where they deliver benefits including dent-resistance, crash-resistance, formability and good weldability.
 

Microalloyed grades

Microalloyed grades have high-strength levels through precipitation and grain refinement hardening. Careful use of alloying elements ensures high mechanical resistance and good weldability. There is limited scope for cold forming.

Tata Steel supplies high-strength microalloyed (HSLA) steel which complies with ASTM standard A1008: 2013.
 

Rephosphorized grades

These grades deliver high mechanical resistance and good suitability for cold forming due to solid solution hardening by phosphorus. Our rephosphorized grades are highly suited to the manufacture of car body panels and structural components because of their good resistance to impact and fatigue.
 

Carbon manganese grades

Our carbon manganese product combines high strength with excellent formability for the most difficult cold-forming applications.
 

Applications

  • Automotive parts
  • Construction parts
  • Furniture
  • Precision tubes
     

Relationship with standards

Tata Steel can supply the following cold-rolled high-strength steel grades:

ASTM A1008: 2013
HSLAS Grade
HSLAS Grade 45 class 1
HSLAS Grade 45 class 2
HSLAS Grade 50 class 1
HSLAS Grade 50 class 2
HSLAS Grade 55 class 2
HSLAS-F Grade 50

Please contact us for information on our range of rephosphorized and carbon managenese grades.
 

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-HSS-HSLAS Grade 50-Properties

Properties

Properties
 

Mechanical properties

The available grades have the following mechanical properties measured parallel to the rolling direction (longitudinal test pieces).

ASTM A1008: 2013 Grade HSLAS Grade 50 class 1 HSLAS Grade 50 class 2 HSLAS-F Grade 50
Min. yield strength ksi 50 50 50
Min. tensile strength ksi 65 60 60
Elongation % 20 20 22
Min. elongation after fracture A uses test piece length L0 = 2 inches.

Chemical composition

Cold-rolled high-strength steels supplied by Tata Steel comply to the following heat analysis with maximum values in weight percentages unless otherwise shown.

Micro-alloyed grades        
ASTM A1008: 2013 Grade HSLAS Grade 50 class 1 HSLAS Grade 50 class 2 HSLAS-F Grade 50
C Max. 0.23 0.15 0.15
Mn Max. 1.65 1.65 1.65
P Max. 0.04 0.04 0.020
S Max. 0.04 0.04 0.025
Cu Max. 0.20 0.20 0.20
Ni Max. 0.20 0.20 0.20
Cr Max. 0.15 0.15 0.15
Mo 1 Max. 0.06 0.06 0.06
1 Min. 0.005 0.005 0.005
Cb 1 Min. 0.005 0.005 0.005
Ti 1 Min. 0.005 0.005 0.005
1. singly or in combination.

EN_US-Engineering-Product-Cold-Rolled-HSS-HSLAS Grade 50-Dimensions

Dimensions

Dimensions

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

Thickness Max. width
From - up to HSLAS Grade 50
  class 1, class 2
0.024 - 0.035 49
0.035 - 0.037 51
0.037 - 0.040 52
0.040 - 0.050 54
0.050 - 0.073 55
0.073 - 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

 

 

 

EN_US-Engineering-Product-Cold-rolled-HSS-HSLAS Grade 55

HSLAS Grade 55
Specification details for HSLAS Grade 55

EN_US-Engineering-Product-Cold-rolled-HSS-All Grades Overview

Overview

Overview

These steels are ideal for manufacturing strong, thin gauge products. Our high-strength steels are a popular choice in the automotive industry where they deliver benefits including dent-resistance, crash-resistance, formability and good weldability.
 

Microalloyed grades

Microalloyed grades have high-strength levels through precipitation and grain refinement hardening. Careful use of alloying elements ensures high mechanical resistance and good weldability. There is limited scope for cold forming.

Tata Steel supplies high-strength microalloyed (HSLA) steel which complies with ASTM standard A1008: 2013.
 

Rephosphorized grades

These grades deliver high mechanical resistance and good suitability for cold forming due to solid solution hardening by phosphorus. Our rephosphorized grades are highly suited to the manufacture of car body panels and structural components because of their good resistance to impact and fatigue.
 

Carbon manganese grades

Our carbon manganese product combines high strength with excellent formability for the most difficult cold-forming applications.
 

Applications

  • Automotive parts
  • Construction parts
  • Furniture
  • Precision tubes
     

Relationship with standards

Tata Steel can supply the following cold-rolled high-strength steel grades:

ASTM A1008: 2013
HSLAS Grade
HSLAS Grade 45 class 1
HSLAS Grade 45 class 2
HSLAS Grade 50 class 1
HSLAS Grade 50 class 2
HSLAS Grade 55 class 2
HSLAS-F Grade 50

Please contact us for information on our range of rephosphorized and carbon managenese grades.
 

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-HSS-HSLAS Grade 55-Properties

Properties

Properties

Mechanical properties

The available grades have the following mechanical properties measured parallel to the rolling direction (longitudinal test pieces).

ASTM A1008: 2013 Grade HSLAS Grade 55 class 2
Min. yield strength ksi 55
Min. tensile strength ksi 65
Elongation % 18
Min. elongation after fracture A uses test piece length L0 = 2 inches.

Chemical composition

Cold-rolled high-strength steels supplied by Tata Steel comply to the following heat analysis with maximum values in weight percentages unless otherwise shown.

Micro-alloyed grades    
ASTM A1008: 2013 Grade HSLAS Grade 55 class 2
C Max. 0.15
Mn Max. 1.65
P Max. 0.04
S Max. 0.04
Cu Max. 0.20
Ni Max. 0.20
Cr Max. 0.15
Mo 1 Max. 0.06
1 Min. 0.005
Cb 1 Min. 0.005
Ti 1 Min. 0.005
1. singly or in combination.

EN_US-Engineering-Product-Cold-Rolled-HSS-HSLAS Grade 55 Class 2-Dimensions

Dimensions

Dimensions

For continuously annealed (CA) products.
Please consult us for dimensional availability of HSLA Grade 55 class 2.
 

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