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More than 65 advanced high-strength steel vehicles debuted in 2018 - SMDI

Steel News - Published on Thu, 10 Jan 2019

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Repairer Driven News reported that Steel Market Development Institute last month estimated OEMs revealed more than 65 vehicles containing advanced high-strength steel at 2018 auto shows nationwide, a report with ramifications for collision repair. World Auto Steel, whose members include many of the same companies as the SMDI’s parent American Iron and Steel Institute, defines advanced high-strength steel as anything with a yield strength of more than 550 megapascals and including ultra-high-strength steels with tensile strengths (which is normally what OEMs discuss in repair procedures) of 780 MPa or more. (Generally, the minimum tensile strength to count as AHSS appears to be 590 MPa.)

The trade group wrote in a news release Dec. 17, 2018 that “AHSS was represented in the composition of every vehicle segment and size, including the popular SUV, CUV and truck markets.”

A SMDI survey revealed 75 percent “regard safety as the most important factor when buying or leasing a vehicle,” according to the organization. Steel allowed OEMs to meet safety guidelines, it argued.

SMDI automotive market Vice President Jody Hall said in a statement that “As vehicles evolve to become stronger, safer and more durable, high-strength steel continues to be the material of choice for automakers. Occupant protection is enhanced by using high-strength grades of steel in critical vehicle areas such as the frame and body. We are seeing more vehicles debut with predominantly steel structures because it is a proven, trusted and cost-effective material for automakers and consumers alike.”

OEMs using higher-strength steels to cut mass and protect occupants in crash tests can mean shops face restrictions on heat including heat merely in the vicinity of the steel and sectioning. If a shop isn’t reading repair procedures, there’s likely a higher risk of a botched repair and unsafe vehicle than there would be with mild or lower-megapascal high-strength steels.

The AHSS rounded up some vehicles it considered noteworthy for their steel, drawing upon news releases and media coverage to mention steel highlights. We’ve covered many of these vehicles throughout the year, but we felt the roundup’s tidbits were worth reporting or repeating. Find out more about the vehicles with the links below and with OEM repair procedures.

About 65 percent of the 2019 Jeep Cherokee is high-strength steel. Jeep wrote in a news release that “Hot stamped-, high-strength- and ultra-high-strength steel are used to construct a strong, lightweight, solid vehicle architecture.”

The 2020 Toyota Corolla will have a new crash protection design and use more ultra-high-strength steel. It also should sport 60 percent better torsional rigidity.

The 2019 Ram 1500‘s frame is 98 percent made out of high-strength or stronger steels. Learn more about the truck’s steel from this FCA and Gestamp presentation at the 2018 Great Designs in Steel.

Subaru built 56 percent of the next-generation 2019 Forester body out of high-strength steels ranging from 440 megapascals to gigapascal-plus metal in areas like the B-pillar and frame rail.

The 2019 Kia Forte “strengthens its bones” for its third generation and has a body made up of 54 percent advanced high-strength steel, according to the automaker.

Mercedes wrote that the 2019 Mercedes G-Class shed 375 pounds, in part because of “a new mix of materials comprising strong, high- strength, ultra-high-strength steels. The rigid body shell is now made of a variety of steel grades,” Mercedes also wrote in the news release, describing the A- and B-pillars as made of “high-strength steel due to their load-bearing function.”

The 2019 Volkswagen Jetta: Volkswagen spokesman Mark Gillies wrote in an email that the Jetta is 35 percent ultra-high-strength hot-formed steel, 12 percent ultra-high-strength steel, and “39 percent extra high strength steel.” A Volkswagen diagram of the next-generation European 2018 Tiguan Gillies provided in 2017 defines its hot-formed ultra-high-strength steel as greater than 1,000 megapascals, other ultra-high-strength steel as less than 1,000 MPa, and “extra-high-strength steel” as less than 420 MPa but a minimum of 220 MPa. Presumably, those VW metal definitions extended to the Jetta as well.

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Posted By : Rabi Wangkhem on Thu, 10 Jan 2019
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