GMW3399M-ST-S CR 450T/250Y-DP Dual Phase — Cold Rolled Steel

GMW3399M-ST-S CR 450T/250Y-DP is a dual phase grade cold rolled steel conforming to the gm material specifications. At 250 MPa minimum yield strength, this is structural-quality steel for inner body panels, dash panels, and trunk floor reinforcements, with structural stamping capability for load-carrying components requiring consistent thickness reduction.

This specification carries the dual-phase (DP) designation under GMW3399M with ferrite-martensite microstructure for energy absorption in crash structures.

As a Dual Phase steel, GMW3399M-ST-S CR 450T/250Y-DP offers a specific combination of strength and formability engineered for advanced automotive manufacturing. The dual-phase microstructure of ferrite and martensite provides excellent work hardening and crash energy absorption.

Ameristeel maintains inventory of GMW3399M-ST-S CR 450T/250Y-DP in various gauges and widths, available as coils, sheets, or custom blanks. Our ISO 9001:2015 certified processes ensure consistent quality from prototype through production volumes.

Available coating options for GMW3399M-ST-S CR 450T/250Y-DP include Galvanized, Galvanneal, Electrogalvanized, providing corrosion protection and surface preparation suited to your manufacturing process requirements.

GMW3399M-ST-S CR 450T/250Y-DP at 250 MPa yield and 450 MPa tensile compares to GMW3032M-ST-S CR240LA (10 MPa higher yield at 240 MPa) and GMW3032M-ST-S HR240LA (10 MPa higher yield at 240 MPa). Selecting the right grade depends on the balance between strength requirements and forming complexity for your specific stamping application.