MS 50002-MCH 550Y-600T Hot Rolled Small Grain — Hot Rolled Steel

MS 50002-MCH 550Y-600T is a hot rolled small grain grade hot rolled steel conforming to the fiat/chrysler specifications. At 550 MPa minimum yield strength, this is ultra-high-strength steel for door intrusion beams, bumper reinforcements, and tunnel structures, with substantial tensile reserve for energy-absorbing crush zones and progressive deformation members.

This specification uses the hot-rolled martensitic/complex-phase (MCH) process route with fine-grain microstructure for high-strength structural applications.

MS 50002-MCH 550Y-600T is a Martensitic / Complex Phase steel at 550 MPa yield and 600 MPa tensile. The predominantly martensitic microstructure provides the highest strength levels in the MS specification family, targeting anti-intrusion barriers and structural reinforcements where maximum load-bearing capacity takes priority over formability.

Ameristeel stocks MS 50002-MCH 550Y-600T in production-ready gauges and widths suited to high-strength stamping applications. As a 550 MPa yield 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.

MS 50002-MCH 550Y-600T 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 MS 50002-MCH 550Y-600T should account for forming severity and post-stamping corrosion exposure in the final application.

MS 50002-MCH 550Y-600T at 550 MPa yield and 600 MPa tensile compares to MS 50002-LAC 550Y-620T (0 MPa lower yield at 550 MPa and 600 MPa vs 620 MPa tensile) and MS 50002-LAH 550Y-620T (0 MPa lower yield at 550 MPa and 600 MPa vs 620 MPa tensile). Selecting the right grade depends on the balance between strength requirements and forming complexity for your specific stamping application.

MS 50002-MCH 550Y-600T is an OEM-specific grade developed to meet Stellantis (Fiat/Chrysler) engineering requirements for vehicle body and structural applications. Ameristeel supplies Stellantis (Fiat/Chrysler)-specified steel grades directly to Tier 1 and Tier 2 automotive suppliers throughout Southeast Michigan, with full material traceability and third-party test reports on every coil. Our Fraser, MI steel processing facility maintains dedicated inventory of MS 50002-MCH 550Y-600T to support just-in-time delivery schedules, and our ISO 9001:2015 quality system ensures that every shipment meets the exact mechanical property, surface quality, and dimensional tolerances required by Stellantis (Fiat/Chrysler) production standards.

Ameristeel offers in-house processing for MS 50002-MCH 550Y-600T 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 for complex profiles and prototypes on our TRUMPF fiber laser systems, 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 MS 50002-MCH 550Y-600T to your exact specifications.