PRODUCTS

HIGH-STRENGTH
LOW-ALLOY STEEL

High-strength low-alloy steel (HSLA) from U. S. Steel offers a unique combination of strength, formability and weldability to support weight reduction in complex automotive parts.

FEATURES

High-strength low-alloy steel (HSLA) products have a good combination of formability and weldability, offering increased strength achieved through the addition of small quantities of alloying elements. U. S. Steel engineers can assist with a well thought-out design that utilizes HSLA to open new possibilities for mass reduction and other benefits in complex parts across most automotive applications.

  • Weldability—good welding characteristics
  • Fatigue Performance—high-strength steels have good resistance to fatigue due to their relatively high yield strengths, making HSLA is a good candidate for durability-sensitive components
  • Denting—good dent resistance attributes. For additional capabilities, please check our dent-resistance steels
  • Applications—HSLA materials are typically found on structural parts of the vehicle, as most HSLA materials have very limited formability characteristics. The materials are found on rocker inners, b/c pillar reinforcements and cross members
APPLICATIONS
  • Rocker Inners
  • B/C Pillar Reinforcements
  • Cross Members
TYPICAL PROPERTIES FOR HSLA 280MPa

 
PRODUCT YIELD STRENGTH TENSILE STRENGTH TOTAL ELONGATION (%)
Hot Roll 310 380 28
Cold Roll 196 325 26
HDGI 185 305 36
TYPICAL PROPERTIES FOR HSLA 340MPa

PRODUCT YIELD STRENGTH TENSILE STRENGTH TOTAL ELONGATION (%)
Hot Roll 380 450 25
Cold Roll 370 445 26
HDGI 378 458 30
HDGA 378 458 30
TYPICAL PROPERTIES FOR HSLA 420MPa

PRODUCT YIELD STRENGTH TENSILE STRENGTH TOTAL ELONGATION (%)
HDGI 480 550 24
TYPICAL PROPERTIES FOR HSLA 480MPa

PRODUCT YIELD STRENGTH TENSILE STRENGTH TOTAL ELONGATION (%)
HDGI 515 595 20

HIGH-STRENGTH LOW-ALLOY STEEL APPLICATIONS


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CUSTOMER SUCCESS.

At U. S. Steel, careful listening, creative thinking and cross-functional collaboration turn better steel into better solutions for our automaker customers.

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