The 2018 North American International Auto Show brought the biggest names in the auto industry together for a show and tell. (Source: News Atlas)

Continuing on what we saw during the past few years, the focus this year again was on improving safety, performance and design, all at the lightest weight possible for fuel economy. While there have been debates in the past about the best lightweight material, there was a clear winner at this year’s NAIAS. Almost every car, including the 2018 Car of the Year, was clad in advanced high-strength steel (AHHS) and significantly lighter than their predecessors.

Take a look at some of this year’s steel-clad cars.

SEE ALSO: 5 Reasons Why AHSS Tops the Market for Lightweight Auto Materials

2018 Car of the Year: Honda Accord

The 2018 Honda Accord took home the prestigious title of Car of the Year due to its lightweight and improved strength and performance. The 2018 model contains 29 percent ultra-high-strength steel (UHSS) in its chassis and 54.2 percent high strength steel (HSS). With these applications, the Honda Accord achieved a weight reduction of 110 to 176 pounds while improving its body torsional rigidity by 32 percent and its bending rigidity by 24 percent.

2019 Chevy Silverado

The all-new Chevy Silverado comes armed with plenty of steel. One of the features that contribute to its improved safety is the bed floor made of roll-formed HSS. Also, 80 percent of its fully-boxed steel frame is made of HSS and AHSS forms the Silverado’s safety cage. Overall, the new model is taller and 7 inches wider than before. Nevertheless, the all-new Silverado is 450 pounds lighter with a 10 percent increase in torsional rigidity than the previous model.

2019 Dodge Ram 1500

The 2019 Dodge Ram 1500 is another steel-intensive vehicle revealed at NAIAS. About 98 percent of this year’s model is made from HSS, and is the lightest, longest and most efficient frame in the half-ton truck segment. The wheelbase and crew cab is 4 inches longer than the previous model. The Dodge Ram 1500 also has several new safety features. The unique front-splayed frame rail technology, frame-mounted HSS tire blockers and fully-boxed side rails allow the car to absorb more energy in case of impact and minimize structural damage.

2019 Kia Forte

The 2019 Kia Forte is taller, wider and longer than before with 54 percent of its chassis made of AHSS. It also has a 16 percent stiffer body-in-white and the new seat frames are lighter yet stronger as Kia has its eyes on top ratings from the Insurance Institute for Highway Safety (IIHS) for the second consecutive year. The lighter and stronger vehicle will consume about 9 to 20 percent less fuel as well as drop noise levels by 5 decibels.

Why the Steel Overload?

As mentioned above, the latest cars are steel-intensive and automakers increasing the amount of HSS, UHSS and AHSS in their mix of materials. Of course, the main reason for this is steel’s innate properties that make it the ideal solution for automakers looking to cut back on weight and still satisfy safety standards. However, automakers also learned a good lesson from automakers who chose another popular lightweight material – aluminum.

SEE ALSO: Materials Matter: Why Steel Beats Aluminum in the Sustainability Debate

Back in 2014, Ford released its F-150 with an all-aluminum body. The move was bold and the cars sold fast as it was a whole 700 pounds lighter than previous models. Consumers got to drive away with a drastically improved fuel economy, but it didn’t take long for them to realize the big, expensive problem with aluminum bodies: repairs.

The 2015 Ford F-150 has an all-aluminum body. (Source: Hennessey Performance)

Although steel and aluminum are similar in terms of its lightweight properties, aluminum reacts differently than steel under heat. Aluminum does not have metal memory, while steel does, making it hard to reshape and repair following an accident. Welding aluminum also takes much more skill and precision than steel, and there are few repair shops that are equipped to handle aluminum. As a result, drivers not only have a hard time finding repair shops for their aluminum cars, they have to pay a hefty price for repairs compared to repairs for steel cars. For example, Jalopnik reported one of the first cases of the F-150 repairs back in 2015 cost USD 17,000 and a month-long repair time.

Of course, this was a rare case highlighting the steep learning curve of repairing aluminum vehicles, but it also highlights the fact that steel is still the norm when it comes to automotive materials, and judging from the 2018 NAIAS, it’s going to stay that way for quite some time.

Cover photo courtesy of Honda of Lincoln.

Weather Events of 2017

2017 saw some of the worst natural disasters across the globe. The Atlantic hurricane season hit hard, and Hurricanes Harvey, Irma and Maria were especially devastating. Hurricane Harvey caused 82 direct deaths, and an estimated USD 180 billion worth of damage. Hurricane Irma swept across 9 U.S. states leaving 75 people dead and damage costs of USD 50 to 100 billion. Hurricane Maria is the worst natural disaster on record in Dominica with the official death toll at 51, but over 900 cremations have taken place in Puerto Rico following the storm.

The aftermath of Hurricane Harvey shows the importance of resistant housing. (Source: CNN)

In addition, typhoons, tornados and other weather events wreaked havoc on communities around the globe raising awareness for the need for better emergency and disaster relief systems and stronger shelters to withstand natural disasters.

Natural-Disaster-Resistant Homes

For people living in areas prone to natural disasters, a resistant home can make the difference between total property loss and a safe haven. Worldwide, home builders and buyers alike are prioritizing the home’s ability to withstand natural disasters, leading to innovative architectural feats.

The Tsunami House was built to withstand natural disasters. (Source: My Fancy House)

On Camano Island in Washington State, the “Tsunami House” is made to be a safe waterfront home, able to withstand stormy waters. The main living level was built five feet above ground, and the foundations are built on pilings capable of withstanding high-velocity waves. The lower home area was designed with breakaway walls. For both strength and aesthetic purposes, this house contains steel inside and out, with composite and galvanized exterior siding, aluminum windows, and milled finish steel materials indoors. A steel staircase structure ensures safe passage.

The SURVIV(AL) House is sustainable and has a safe room in case of hurricanes or tornadoes. (Source: Inhabitat)

Another example of a home built to survive natural disasters is the SURVIV(AL) hurricane proof house is a solar-powered home with a steel-encased safe room built to withstand the effects of extreme weather like hurricanes and tornadoes. Students from the University of Alabama created this home with a safe room that can withstand a two-by-four plank landing at 200 mph.

The Ophir home sits on a hillside with exposed steel frames to withstand earthquakes. (Source: Inhabitat)

The Ophir home was built in 2010 by a couple in New Zealand following a 6.3 magnitude earthquake that forced many people from their homes and community. The couple, however, built their home back up from scratch, but this time, made sure it would not collapse under any circumstances. Not only can the home withstand earthquakes, it is designed to maximize exposure to sunlight for sustainable living as well. A distinctive feature of the home is its exposed steel frames that support the concrete walls.

The Benefits of Building with Steel    

Steel is one of the most popular materials for construction, but its properties make it especially valuable for natural-disaster-resistant homes. Steel has a high strength to weight ratio for durability, without the heft and its associated transport costs. It requires very little maintenance, even when used as an exterior surface, and will withstand the effects of time. It is also an eco-friendly, cost-efficient material for construction.

Steel Frames are ideal for the construction of natural disaster resistant homes. (Source: Stratco)

In fact, steel can withstand forces up to 150 mph as an exterior material, without becoming damaged. Steel is also an excellent reinforcement when used with concrete, offering the stiffness, strength and ductility needed to help a building withstand damage from events like earthquakes. As part of a building’s foundation structure, steel reinforcements help anchor the foundation, and the entire home, keeping it where it belongs through wind, waves, quakes and rain.

The damage left behind by natural disasters this year show that the effects last well beyond the initial onset. While there is no such thing as a completely weather-proof building, steel can offer a great deal of security and help minimize the destructive outcomes of Mother Nature.

Cover photo courtesy of CENHS.