A 656 Grade 80 Steel Plate

Revision 3 Page 1 of 2 June 26, 2008

ASTM A 656 Grade 80 steel plate is a high-strength, low-alloy hot-rolled structural product with an excellent combination of strength and formability and is intended for applications where increased strength-to-weight ratios are required. The combination of micro-alloying and thermo-mechanical controlled processing employed in SSABs production processes offer an economical balance of high strength, formability, and toughness. SSAB ASTM A 656 Grade 80 is available as cut-to-length plate or as discrete, as-rolled plate. Typical Applications

Typical applications for A 656 Grade 80 include demanding structural applications where strength-to-weight ratios are maximized such as truck frames, transport trailers, construction equipment, agriculture equipment, crane booms, mobile manlifts, and rail cars.

Available Sizes

Cut-to-Length Plate: Thicknesses 0.188 to 0.500 (4.8 to 12.7 mm) in widths 38 to 96 (965 to 2438 mm)

Discrete Plate: Thicknesses 0.375 to 0.750 (9.5 to19.1 mm) in widths 84 to 109 (2133 to 2769 mm)

Please inquire for other sizes.

Chemical Composition Chemical composition meets the chemical requirements of ASTM A 656 Grade 80.

Weldability

SSAB A 656 Grade 80 can be easily welded using suitable shop or field practices by all the usual low-hydrogen welding processes; Shielded Metal-Arc (SMAW) with AWS-E9018 electrode, Submerged-Arc (SAW) with flux/wire combination of matching strength, Gas Metal-Arc (GMAW) with ER90 wire, and Flux Cored (FCAW) with E90T wire. In all cases, except submerged arc welding, a precautionary preheat of 250F (120C) is recommended to remove any surface moisture for thicknesses up to 3/4".

Corrosion Resistance

SSAB A 656 Grade 80 steel plate has enhanced atmospheric corrosion resistance in comparison to non-copper bearing carbon steel plate products. Typical

A 656 Grade 80 Steel Plate

Revision 3 Page 2 of 2 June 26, 2008

Atmospheric Corrosion Resistance Index (ASTM G101) = 5.7.

Formability

A 656 Grade 80 exhibits excellent cold forming characteristics. Recommended minimum inside bend radii for cold forming are tabulated below:

ASTM Recommended Minimum Inside Radii for Cold Bending

Bend Orientation Plate Thickness (t) up to in. [20 mm]

Bend Axis Perpendicular to Rolling Direction

1.75t

Bend Axis Parallel to Rolling Direction

2.625t

To reduce the potential for cracking in cold bending, shear burrs and gas cut edges on and adjacent to the bend axis should be removed by grinding prior to cold forming. Additionally, sharp corners on edges and on punched or gas cut holes located along the bend axis should be removed prior to cold forming.

Applications requiring a tighter inside bend radii should be inquired.

Mechanical Properties

Transverse Tensile Requirements, min. values 0.2% Offset

Yield Strength, ksi [Mpa]

Ultimate Tensile Strength, ksi [Mpa] % Elongation in 8 in. [200 mm]

% Elongation in 2 in. [50 mm]

80 [550] 90 [620] 9 12

Charpy V-notch impact toughness requirements are not included in the basic specification, but can be added as a supplementary requirement. Please inquire for applications requiring a specified minimum toughness.

Sales Contacts

For sales information, please call 877-722-2589 (Southern USA & Mexico), 800-340-5566 (Western and Central USA), 800-383-9031 (North Central USA), and 888-576-8530 (Northeast USA & Canada) or consult www.ssab.com.