Molly Ayala
Electric vehicles (EVs) are becoming increasingly popular, with sales expected to make up a quarter of all new car sales by 2025. One of the limitations of EVs is the weight of the battery and the extra reinforcement required to protect it in the event of a crash. This has led to speculation about whether other materials, such as aluminium, might replace steel in EV construction. However, steel remains an indispensable element in the growing electromobility sector. Steel is essential for achieving weight reduction, recyclability, and economic efficiency, and it plays a critical role in vehicle design and safety. In electric motors, steel literally moves as it is propelled forward by electricity. Steel manufacturers are focusing on making electrical steel tougher and thinner, reducing the overall weight of the motor. As such, steel will continue to be a critical component in the electric vehicle revolution.
| Characteristics | Values |
|---|---|
| Steel's role in electric vehicles | Electric motors in electric vehicles rely on modern electrical steel to propel the vehicle forward |
| Steel demand in the automotive industry | The demand for steel is calculated to remain constant or even increase due to the development of high-strength steels |
| Steel weight reduction | Steel manufacturers are focusing on making electrical steel tougher and thinner, reducing the overall weight of the motor |
| Steel safety | Steel helps achieve safety goals in electric vehicles due to its tensile strength and deformability |
| Steel sustainability | Steel contributes to sustainability in electric vehicles by being recyclable and environmentally friendly |
| Steel cost-effectiveness | Steel is cost-effective due to its optimal balance of strength, performance, mass reduction, and cost |
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What You'll Learn
Electric vehicles use electrical steel to move
Electric vehicles (EVs) use electrical steel to move. An electricity-powered motor relies on modern electrical steel to propel a vehicle forward. Electric vehicles use between 40 and 100 kg of non-grain-oriented electrical steel in their construction. This type of steel is magnetically soft, allowing it to be tougher and thinner without impacting its magnetization. This reduces the overall weight of the motor.
Steel is an indispensable element in the growing electromobility sector. Its high tensile strength and deformability make it ideal for use in integral subframes and B pillars, enhancing passenger safety. Modern joining technologies, such as laser welding, reduce the tension in bonded steel parts, further improving safety in the event of a crash.
The development of high-strength steels ensures the material's future in the automotive industry. Steel helps achieve goals such as weight reduction, recyclability, and economic efficiency. For example, ArcelorMittal's Multi-Part Integration (MPI) concept simplifies the production process by reducing the number of sub-parts needed, optimizing the nesting of parts, and improving the overall body structure.
In addition, the weight of EV batteries and the need for extra reinforcement to protect them during a crash have been challenges for carmakers. Advanced high-strength steels (AHSS) provide the required protection without significantly increasing the vehicle's weight. As the automotive industry transitions to EVs, steel manufacturers are committed to enhancing their electric steel production capabilities to meet the demand for this critical material.
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Steel is critical for vehicle design and safety
Steel is essential for vehicle safety, as it provides the necessary strength and energy absorption in the event of a crash. Electric vehicles have heavier batteries than traditional engine blocks, which means they have more kinetic energy in a collision. To keep passengers safe, vehicles must have greater body strength, and steel offers optimal balance in terms of strength, performance, and mass reduction.
The development of high-strength steels has allowed steel-intensive structures to remain dominant in vehicle design, even as manufacturers sought to reduce weight. For example, steel manufacturers have focused on making electrical steel tougher and thinner, reducing the overall weight of the motor while maintaining its magnetization.
Additionally, steel is critical for vehicle design due to its versatility and customizability. Modern joining technologies, such as laser welding, reduce the tension in bonded metal parts, enhancing safety and allowing for more flexible designs. The constant reinvention and innovation in the use of steel mean that it remains a key material in the automotive industry.
Overall, steel plays a vital and evolving role in vehicle design and safety, and its unique properties make it indispensable in the growing electromobility sector.
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Steel is used in the construction of electric vehicles
In electric motors, steel is essential to propel a vehicle forward. Between 40 and 100 kilos of non-grain-oriented electrical steel is used in the construction of a purely electric vehicle. This type of steel is magnetically soft, allowing it to be tougher and thinner without impacting its magnetization. This results in a reduction in the overall weight of the motor.
The development of high-strength steels has secured the material's future in the automotive industry. Advanced high-strength steels (AHSS) provide the necessary protection for electric vehicle batteries without significantly increasing the weight of the vehicle. This is especially important as electric vehicles have a higher average weight due to their batteries, which weigh more than engine blocks.
Steel also contributes to passenger safety in electric vehicles. New steel types have 3 to 4 times the tensile strength and can be produced to be deformable, making them ideal for integral subframes and B pillars. Additionally, modern joining technologies, such as laser welding, reduce tension in bonded metal parts, enhancing safety in the event of a crash.
Overall, steel is well-positioned to remain the material of choice for electric vehicles, with its strength, weight reduction capabilities, and cost-effectiveness making it a critical component in their construction.
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Steel is key to achieving weight reduction in vehicles
Steel is an essential component in the automotive industry, and its role in achieving weight reduction in vehicles is significant. Weight reduction in vehicles is crucial for improving fuel efficiency and reducing emissions. While powertrain selection has a notable impact on fuel savings, weight reduction is a primary method for automakers to enhance fuel efficiency.
High-strength steels are key to achieving weight reduction in vehicles. By replacing mild steels with high-strength alternatives, the material thickness can be reduced without compromising strength. This principle, known as steel-based light weighting, results in a lighter overall vehicle weight, leading to improved fuel efficiency and reduced fuel consumption.
The use of high-performance steel in manufacturing major components of commercial vehicles has proven effective in reducing weight. For example, Nb-based metallurgy, through its grain refinement and precipitation hardening effects, enhances the material properties and improves component functionality, contributing to weight reduction.
Additionally, steel manufacturers are focusing on making electrical steel tougher and thinner without compromising its magnetization. This innovation directly reduces the weight of electric motors, further contributing to the overall weight reduction of electric vehicles.
Steel also offers economic and sustainability advantages. While aluminium may provide weight reduction, it often requires complex assembly processes and higher costs. Steel, on the other hand, is more economical, and advancements in steel manufacturing technologies aim to reduce costs further while improving weight reduction capabilities.
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Steel is indispensable for the growing electromobility sector
The average electric vehicle weighs more than a petrol or diesel-powered car due to the heavy batteries. This means that electric vehicles have more kinetic energy going into a crash, and to keep passengers safe, vehicles must have greater body strength to absorb and deal with the energy from an impact. Steel is an ideal material for this purpose due to its inherent strength and constant reinvention. For instance, advanced high-strength steels (AHSS) provide the required protection during crashes without adding significantly to the weight of the vehicle.
In electric motors, steel is essential for propulsion, with between 40 and 100 kilos of non-grain-oriented electrical steel used in the construction of a purely electric vehicle. Steel manufacturers are focusing on making electrical steel tougher and thinner, reducing the overall weight of the motor. This weight reduction is a key factor in the demand for steel, as it improves the range of electric vehicles.
The development of high-strength steels ensures the material's future in the automotive industry. For example, ArcelorMittal's Multi-Part Integration (MPI) concept simplifies the production process by reducing the number of sub-parts needed, thus optimising the nesting of parts and increasing material utilisation rates. This results in a significant reduction in weight, saving space in the vehicle underbody and allowing for the addition of more battery cells to increase driving range.
In conclusion, steel plays a critical and indispensable role in the growing electromobility sector, with its strength, weight reduction capabilities, and constant innovation driving its demand and solidifying its place in the future of electric vehicles.
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Frequently asked questions
Yes, electric vehicles have steel moving parts. Steel is an indispensable element in the growing electromobility sector.
Steel is used in electric vehicles because it offers an optimal balance of strength, performance, mass reduction, and cost with the least environmental impact. Steel is also constantly being reinvented, allowing for more careful processing methods that increase output efficiency.
Between 40 and 100 kilos of non-grain-oriented electrical steel is used in the construction of a purely electric vehicle.
Steel helps to achieve goals such as weight reduction, recyclability, and economic efficiency. It also provides greater body strength and safety for passengers in the event of a crash.
