SAE J2340 380X HSLA 55 — COLD ROLLED / HOT ROLLED Steel

SAE J2340 380X is a hsla 55 grade cold rolled / hot rolled steel conforming to the sae standards. At 380 MPa minimum yield strength, this is high-strength steel for front-end structure components, rocker inners, and A-pillar reinforcements.

The X suffix denotes solution-hardened (micro-alloyed) HSLA steel with niobium, vanadium, or titanium additions for grain refinement and precipitation strengthening.

SAE J2340 380X represents the mid-tier solution-hardened HSLA designation within the J2340 standard, engineered with micro-alloying additions for grain refinement and precipitation strengthening. At this strength level, the 380X grade balances formability with structural performance for front-end module brackets, seat track reinforcements, and suspension tower gussets where controlled stretch flanging is required during stamping operations.

Ameristeel carries SAE J2340 380X across a range of gauges and widths in cold rolled / hot rolled form, available as coils, sheets, or custom-cut blanks. With 380 MPa minimum yield strength, this hsla 55 specification requires precise handling and testing — our ISO 9001:2015 certified processes include third-party laboratory verification on every incoming coil.

SAE J2340 380X is supplied with the following coating options: hot-dip galvanized (zinc) for general corrosion resistance; galvanneal (zinc-iron alloy) for superior paint adhesion and weldability; electrogalvanized for precise coating weight control and smooth surface finish. At 380 MPa yield, the coating selection for SAE J2340 380X should account for forming severity and post-stamping corrosion exposure in the final application.

SAE J2340 380X at 380 MPa yield compares to SAE J2340 340X (40 MPa higher yield at 340 MPa) and SAE J2340 420X (40 MPa lower yield at 420 MPa). Selecting the right grade depends on the balance between strength requirements and forming complexity for your specific stamping application.

SAE J2340 380X is widely used across structural construction, heavy equipment manufacturing, pressure vessel fabrication, bridge and infrastructure components, and automotive chassis applications. Ameristeel sources and stocks this grade at our Fraser, MI steel processing center, with the ability to supply production quantities, prototype runs, and custom-processed orders. Whether you need full coils, slit-to-width coils, cut-to-length sheets, or precision blanks, our team can fulfill orders to SAE J2340 380X specifications with complete mill test reports and material certification.

Ameristeel offers in-house processing for SAE J2340 380X at our Warren and Fraser, Michigan facilities. Available processing capabilities include precision slitting to custom widths on our multi-cut blanking line, cut-to-length sheet processing for exact dimensional requirements, laser cutting of high-strength profiles on our TRUMPF fiber laser with up to 4kW power, press brake forming on our TruBend series with up to 110-ton capacity and 120" bend length, shear processing for rapid sheet production. From raw material sourcing through finished part delivery, Ameristeel provides a single-source solution — eliminating the need to coordinate between separate steel suppliers, service centers, and fabrication shops. Learn more about our laser cutting capabilities, production steel sales, or request a quote for processing SAE J2340 380X to your exact specifications.