Hot-rolled

Advanced and ultra high-strength steel (AHSS / UHSS)

Tata Steel’s range of versatile hot-rolled advanced and ultra high-strength steels has been developed primarily to meet the needs of the automotive industry – increasing strength or reducing weight to help achieve optimal performance parameters.

Hot-rolled advanced high strength steel component

Product specification

AHSS and UHSS are currently available in the following grades

EN_US-Product-Hot-Rolled-AHSS-HR FB590-UC TSUK

FB590 HR

Specification details for HR FB590-UC

EN_US-Product-Hot-Rolled-AHSS UHSS-All grades overview TSUK

Overview

Ferrite-bainite – HR FB590-UC

HR FB590-UC is a ferrite-bainite advanced high-strength steel offering excellent formability characteristics. It is particularly suited to automotive chassis and suspension applications where a combination of superior strength and fatigue performance is required on relatively complex-shaped parts. HR FB590-UC offers a high hole expansion capacity (HEC) and high tensile strength – ideal for components with a significant amount of edge stretching. The tensile strength levels deliver excellent fatigue resistance as an additional benefit.

Relationship with standards

Tata Steel can supply the following hot-rolled advanced and ultra high-strength steel grades:

Tata Steel	VDA	prEN 10338:2009	EN 10083-3:2006
HR FB590-UC	HR440Y580T-FB	HDT580F	-
HR XPF800-UC*	-	-	-
HR XPF1000-UC*	-	-	-
HR CP800-UC*	HR660Y760T-CP	HDT760C	-

*Produced in the Netherlands. For further information click here.

Applications

upper and lower control arms
engine sub-frames
other chassis and suspension components
twist beam rear axles
wheels

Strength and ductility

Utilising the superior combination of strength and ductility of Tata Steel’s advanced steel portfolio can yield significant lightweighting potential. Component shapes which were previously considered too challenging to make, are now a possibility. This enables designers to integrate high strength and durable materials into their designs to fully unlock the potential of steel.

Increased performance

Application of our advanced steel grades – in place of lower strength, conventional steel grades - can lead to the increased performance of finished components.

Weight reduction

Application of our advanced steel with a lower thickness - in comparison with lower strength, conventional steel grades - can help reduce component weight without compromising performance. This can increase your output per tonne of steel.

Product choice

Our hot-rolled advanced and ultra high-strength steels include ferrite-bainite, complex phase and hot forming steel grades.

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 5.0 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 0.4-1.8 g/m²

Alternative oiling ranges are available.
Please contact us for details.

Certification

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

EN_US-Product-Hot-rolled-All Grades Surface aspects Supply Conditions TSUK

Supply 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 0.25 inch.
The steel grades shown on the following pages belong to the standard range offered by Tata Steel.
Please contact us regarding other specifications we may have that meet your needs. You can find details on how to get in touch with us in 'Contact Us' below.

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 55 - 275 mg/ft²

Alternative oiling ranges are available.
Please contact us for details. You can find details on how to get in touch with us in 'Contact Us' below.

EN_US-Product-Hot-Rolled-AHSS-FB590-Properties TSUK

Properties

Mechanical Properties

The values shown for the mechanical properties of HR FB590 are for test pieces taken parallel to the rolling direction unless otherwise stated.

	EN 10338: HDT580F	FB590 HR Typical²
Yield strength R_p0_,2 ¹ (N/mm²)	440 - 600	490	480-600
Tensile strength R_m (N/mm²)	≥ 580	595	590-670
Elongation %	> 15	20	18

^1. Lower yield strength or 0.2 % proof stress applies.
^2. These mechanical property values are quoted for the transverse rolling direction.
Hole expansion coefficient values can be supplied (although not as part of the production release test) – please contact us for details.
Elongation after fracture A uses test piece length L₀ = 80 mm

Chemical composition

Tata Steel supplies the following cast analysis with maximum values in weight percentages unless shown otherwise:

		EN10338: HDT580F	FB590 HR
C	Max.	0.18	0.12
Mn	Max.	2.0	2.0
Si	Max.	0.5
P	Max.	0.05	0.025
S	Max.	0.010	0.010
Al_tot		0.015 - 2.0	0.015 - 2.0
Cr+Mo	Max.	1.0	1.0
Nb	Max.		0.09
Ti	Max.		0.15
Nb+Ti	Max.	0.15
CrMoCu	Max.		1.0
TiNbV	Max.		0.15
V	Max.	0.15	0.15
B	Max.	0.01	0.01

EN_US-Product-Hot-Rolled-AHSS-FB590-Dimensions TSUK

Dimensions

HR FB590 is available in pickled and non-pickled condition.
Dimensions in mm.

Thickness	Max. width
From - to	HR FB590
2.00 - 2.50	1100
2.50 - 2.80	1300
2.80 - 5.00	1360

Minimum width is 900 mm.

For products produced in the Netherlands click here.

Tolerances for wide strip and slit wide strip comply with standard EN 10051: 2010.
Tighter tolerances are available, please contact us.

EN_US-Product-Hot-rolled-All grades Shape and dimensional tolerancesTSUK

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 (2015) / A635 (2015)
	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 (2015) / A635 (2015). Width tolerances are over, no tolerance under.

Width tolerances available
Carbon steel	ASTM A568: 2015 / A635: 2015
Carbon steel	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: 2015 / A635: 2015
HSLA	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
Coil diameter inner pickled	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
Minimum tonnage per order	Refer to price list for order quantity details
Minimum tonnage per order	Minimum order quantities may apply