Microalloyed steel

Microalloyed steel is a type of steel that contains less than 1.0 wt % and often less than 0.1 wt % of alloying elements, usually vanadium or niobium. It is a carbon-manganese steel with a low carbon content, but with the addition of micro-alloying elements such as niobium and titanium. The application of high strength micro-alloyed steel could significantly promote the production and utilization of bulk steel materials to the environment friendly direction by "reduction".From: Introduction to Engineering Materials [2019], Review of Vanadium Production Part I: Primary Resources [2022], The Repair of Vehicle Bodies [2018]

Materials used in vehicle bodies

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Published in Andrew Livesey, Alan Robinson, The Repair of Vehicle Bodies, 2018

Andrew Livesey, Alan Robinson

Micro-alloyed steel is basically a carbon-manganese steel having a low carbon content, but with the addition of micro-alloying elements such as niobium and titanium. Therefore it is classed as a low-alloy, high-strength steel within the carbon range. As a result of its strength, toughness, formability and weldability, the car body manufacturers are using this material to produce stronger, lighter-weight body structures. A typical composition utilized for a micro-alloyed high-strength steel (HSS) is as follows:

Review of Vanadium Production Part I: Primary Resources

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Published in Mineral Processing and Extractive Metallurgy Review, 2022

Feng Gao, Afolabi Uthmon Olayiwola, Biao Liu, Shaona Wang, Hao Du, Jianzhong Li, Xindong Wang, Donghui Chen, Yi Zhang

It is well recognized that the application of high strength micro-alloyed steel could significantly promote the production and utilization of bulk steel materials to the environment friendly direction by “reduction”. For example, vanadium-containing HRB500 reinforcing bar has been verified to be able to reduce the consumption of steel by 10% when replacing HRB400, and 20% when replacing HRB335. Currently, China produces more than 200 million tons of steel bars each year, and according to calculation, if all were replaced by HRB500 reinforcing bar, the reduction of iron concentrate, standard coal, and CO2 emissions would be more than 320 million tons, 120 million tons, and 400 million tons, respectively. Due to the implementation of new reinforcing bar standard in China on November 1st, 2018, the vanadium market appears to be quite optimistic in the future.

Microalloyed steel

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Materials used in vehicle bodies

Review of Vanadium Production Part I: Primary Resources