Heat treatable steel

Tata Steel offers a choice of hot-rolled heat-treatable steels

Heat-treatable steels offer advantages across many applications. We exercise stringent control over chemical composition and production processes, resulting in a robust, consistent and reliable quality you can depend on.

The chemical composition of our boron manganese steel family makes it suitable for forming complex shapes. After a quench and temper step at the customer, the end product will gain its final hardness.

High carbon steels are characterised by high levels of resistance, hardness and strength. This range is designed for parts which require reliable form stability during intensive use.

Boron manganese grades are used in agricultural equipment
Oil country tubular goods
Boron manganese grades are designed for soil tillage tools
Hot-rolled high carbon steel component
Hot-rolled high carbon steel component
Hot-rolled heat treatable steel component
Product specification
Heat treatable steels are currently available in the following grades:

EN-Engineering-Product-Hot-Rolled-Heat treatable steel-22MnB5 TSE

Specification details for 22MnB5

EN-EngineeringAutomotive-Product-Hot-rolled-All Grades Surface aspects Supply Conditions TSE

Supply Conditions

Supply - product conditions

Hot-rolled steel can be supplied with these product conditions and finishes and with this surface treatment:

Side/surface condition non-pickled pickled pickled and oiled
Mill edges Yes Yes Yes
Trimmed edges - Yes Yes
Trimmed edges available in thicknesses up to 8.0 mm.
Please contact us regarding other specifications we may have that meet your needs.

Surface aspects

Description Availability
Surface finish Coils are available in non-pickled and pickled finish for most grades. 
For grade specific availability, please refer to the dimensional tables.
Oiling Pickled finish is available with rolling
or preservative oil applied. 
Oil weight normally 0.5-2.5 g/m2
Alternative oiling ranges are available.
Please contact us for details.


Test certificates 2.2/3.1 are available according to EN 10204.         

EN-Engineering-Product-Hot-Rolled-Heat treatable steel-22MnB5-Properties TSE


Mechanical properties

The values of the tensile test apply to test bars longitudinal to the rolling direction.

Grade 22MnB5 Typical
Yield strength  Rp (N/mm²) 395
Tensile strength Rm (N/mm²) 575
Elongation 1  A50 (5) (%) 15
1. The index of elongation A refers to the type of tensile test sample. 

Chemical composition

  Grade 22MnB5
C Min. - Max. 0.21 - 0.25
Mn Min. - Max. 1.20 - 1.30
P Max. 0.020
S Max. 0.010
Altot Min. - Max. 0.020 - 0.060
Si Min. - Max. 0.20 - 0.30
Cr Min. - Max.  0.15 - 0.25
Ti Min. - Max. 0.020 - 0.035
B Min. - Max. 0.0020 - 0.0035
All values are in weight%.


The typical carbon equivalent value is 0.49.

EN-Engineering-Product-Hot-Rolled-Heat treatable steel-22MnB5-Dimensions TSE


Dimensional capability - non-pickled

Dimensions in mm.

Thickness Max. width
From - up to 22MnB5
2.50 - 3.00 1500
3.00 - 4.00 1735
4.00 - 5.00 1875
5.00 - 6.00 2015
6.00 - 20.00 2070
Minimum width is 1000 mm.
Please contact us for the availability of 22MnB5 below 2.5 mm. 
Other dimensions are available - please contact us.

Dimensional capability - pickled

Dimensions in mm.

Thickness Max. width
From - up to 22MnB5
2.50 - 3.00 1500
3.00 - 4.00 1735
4.00 - 5.00 1875
5.00 - 6.00 2015
6.00 - 8.00 2070
8.00 - 10.00 1600
Minimum width is 1000 mm.
Please contact us for the availability of 22MnB5 below 2.5mm. 
Other dimensions are available - please contact us.


Tolerances for wide strip and slit wide strip comply with standard EN 10051: 2010.

Tighter tolerances are available, please contact us.


EN-EngineeringAutomotive-Product-Hot-rolled-All grades Shape and dimensional tolerances TSE

Shape and dimensional tolerances

Shape and dimensional tolerances

The specified values for wide strip do not apply to the uncropped ends of the coil (‘head’ and ‘tail’). The length of these uncropped ends is calculated using the following formula:

length (in metres) = 90/nominal thickness (in mm), with a maximum of 20 metres.

If required, this part of the coil can be removed, however an additional cost may be charged for this.


Tolerances on thickness