SAE J2340 550X HSLA 80 — COLD ROLLED / HOT ROLLED Steel

SAE J2340 550X is a hsla 80 grade cold rolled / hot rolled steel conforming to the sae standards. At 550 MPa minimum yield strength, this is ultra-high-strength steel for door intrusion beams, bumper reinforcements, and tunnel structures.

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

Ameristeel stocks SAE J2340 550X in production-ready gauges and widths suited to high-strength stamping applications. As a 550 MPa yield cold rolled / hot rolled product, this specification is available in coil, sheet, and precision-blanked formats. Our ISO 9001:2015 certified facility triple-tests every coil (ID, OD, and center) to verify mechanical properties remain consistent throughout the entire length.

SAE J2340 550X 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 550 MPa yield, the coating selection for SAE J2340 550X should account for forming severity and post-stamping corrosion exposure in the final application.

SAE J2340 550X at 550 MPa yield compares to SAE J2340 490X (60 MPa higher yield at 490 MPa) and SAE J2340 420X (130 MPa higher 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 550X 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 550X specifications with complete mill test reports and material certification.

Ameristeel offers in-house processing for SAE J2340 550X 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 550X to your exact specifications.