- upper and lower control arms
- engine sub-frames
- other chassis and suspension components
- twist beam rear axles
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.
Application of our advanced steel grades – in place of lower strength, conventional steel grades - can lead to the increased performance of finished components.
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.
Our hot-rolled advanced and ultra high-strength steels include dual phase, ferrite-bainite, complex phase and hot forming steel grades.
Dual phase – HR DP600-UC
HR DP600-UC is an advanced hot-rolled, pickled and oiled, high-strength steel. It is especially suited to cold forming operations on part shapes featuring high stretching portions. This grade meets the requirements of European standard prEN 10338: 2009 (for hot-rolled multiphase steels with higher yield strength for cold forming). Our HR DP600-UC also has properties that exceed the corresponding HDT580X in the standard.
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.
HR XPF800-UC combinines high strength with good fatigue resistance, outperforming HSLA and multiphase products of equivalent strength levels, due to it outstanding hole expansion capacity (HEC), averaging 90%, and a far superior minimum elongation of 14%.
Complex phase – HR CP800-UC
HR CP800-UC is a complex phase advanced high-strength steel featuring a very fine-grained bainitic matrix microstructure combined with a small fraction of ferrite and martensite phases. This microstructure results in a strength of at least 780MPa combined with an optimal balance between hole expansion capacity (HEC) and material elongation. The balance enables the design of relatively complex-shaped components requiring high strength and fatigue performance to be manufactured by cold stamping or roll forming.
Hot forming steel – HR HQ1500-UC
Our die-quenched hot forming steel HR HQ1500-UC is a hot-rolled ultra high-strength steel. It enables an excellent degree of shape accuracy and mechanical performance. Its ultra high strength delivers significant benefits – especially when it comes to weight saving. By switching to HR HQ1500-UC from high-strength low-alloy or dual phase steels, designers can reduce the material gauge - creating stronger, lighter structures. We can supply our hot forming steel in either an ‘as rolled’ non-pickled condition or pickled and oiled.
The ‘as rolled’ condition is suitable for forming both prior to or during heat and quenching treatments. The steel’s hardness properties after heat treatment make it highly suitable for applications requiring high wear-resistance.
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 HQ1500-UC||-||-||20MnB5 1|
1. This grade is also widely known as 22MnB5.