ASTM A572 Grade 55
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The ASTM A572 specification is the Standard Specification for High-Strength Low-Alloy Columbium-Vanadium Structural Steel for plates used in general construction and structural applications. ASTM A572 includes five grades with specified minimum yield strengths of 42, 50, 55, 60, and 65 ksi, respectively. For applications where notch toughness is important, consult SSAB for specific Charpy V-notch toughness requirements. ASTM A572 grades are used in a wide variety of structural applications in many market segments.
|ASTM A572 Grade 55||Mill Plate||0.188 - 2.00||72 - 120||120 - 1020|
|ASTM A572 Grade 55||Temper Leveled Plate||0.100 - 0.625||48 - 96||72 - 720|
|—||Coil for Conversion To||0.188 - 0.625||60 - 96||—|
Mill plate: Please inquire for plate thicknesses over 1.50 inches, plate widths less than 72 inches and greater than 120 inches, and for plate lengths less than 120 inches and greater than 1020 inches.
Temper Leveled Plate: SSAB's Cut-To-Length facilities use the temper leveled coil (TLC) process to produce temper leveled plate products. For additional information concerning our temper leveling process, please refer to our SSAB Americas: North American Cut-to-Length Operations brochure located under the Downloads section of our Commercial Steel Overview country page.
Coil for Conversion To: Always inquire Coils for Conversion to A572, Grade 55. Coils for conversion to are excluded from qualification to this specification until they are processed into a finished plate product and all required processing, inspections, and testing are performed. Coils For Conversion To product will be certified to chemistry only. Coils will be subject to availability, so please inquire. Please inquire for coil thicknesses greater than 0.625 inches and for coil widths less than 60 inches and greater than 96 inches. Slitting capabilities are determined by strength levels and thicknesses, so please inquire all slit coil opportunities.
Tensile testing is performed in the transverse direction according to ASTM A6 requirements. The required tensile properties are tabulated below:
|Elongation in 2" 1)
|Elongation in 8" 1)
|ASTM A572 Grade 55||0.100 - 2.00||55||70||20||17|
1) For plates wider than 24 in., the elongation requirement is reduced two percentage points. Additional elongation requirement adjustments are allowed per the Tension Tests section of Specification ASTM A6.