ASTM A1011/A1011 HSLAS GR55 (380) CLASS 1 HSLA Grade 55 — Hot Roll PO Steel

ASTM A1011/A1011 HSLAS GR55 (380) CLASS 1 is a hsla grade 55 grade hot roll po steel conforming to the astm standards. At 380 MPa minimum yield strength, this is high-strength steel for front-end structure components, rocker inners, and A-pillar reinforcements.

Class one requires tighter mechanical property tolerances with lower maximum yield variability, ensuring more predictable forming behavior in progressive die stamping operations.

The Class 1 designation indicates tighter mechanical property control with lower yield variability for precision stamping. Within the ASTM family, different class numbers reflect progressively different ductility and elongation requirements to suit varying stamping complexity.

As a Low Alloy / HSLA steel, ASTM A1011/A1011 HSLAS GR55 (380) CLASS 1 offers a specific combination of strength and formability engineered for advanced automotive manufacturing. This advanced high-strength classification meets demanding structural performance requirements.

Ameristeel maintains inventory of ASTM A1011/A1011 HSLAS GR55 (380) CLASS 1 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 ASTM A1011/A1011 HSLAS GR55 (380) CLASS 1 include Galvanized, Galvanneal, Electrogalvanized, providing corrosion protection and surface preparation suited to your manufacturing process requirements.

ASTM A1011/A1011 HSLAS GR55 (380) CLASS 1 at 380 MPa yield compares to ASTM A1008/A1008M GRADE 55 (380) CLASS 1 (0 MPa lower yield at 380 MPa) and ASTM A1008/A1008M GRADE 55 (380) CLASS 2 (0 MPa lower yield at 380 MPa). Selecting the right grade depends on the balance between strength requirements and forming complexity for your specific stamping application.