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ASTM A656 Grade 70

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    General Product Description

    The ASTM A656 specification is the Standard Specification for Hot-Rolled Structural Steel, High-Strength Low-Alloy Plate with Improved Formability for plates in applications where increased strength-to-weight ratios are required. ASTM A656 includes five grades differentiated by minimum specified yield strengths of Grade 50, Grade 60, Grade 70, Grade 80 and Grade 100. Typical applications include construction equipment, crane booms, mobile man lifts, agricultural equipment, transport trailers, heavy vehicle frames and chassis, and rail cars.

    Available Dimensions

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      Grade Product type Thickness
      (inmm)      		 Width
      (inmm)      		 Length
      (inmm)
      A656 Grade 70 Mill Plate 0.437 - 1.0011.1 - 25.4 72 - 1201800 - 3050 120 - 10203050 - 25910
      A656 Grade 70 Temper Leveled Plate 0.100 - 0.502.54 - 13 48 - 961200 - 2400 72 - 7201800 - 18300
      — Coil for Conversion To 0.188 - 0.504.78 - 13 60 - 961500 - 2400 —
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      Comparison

        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 Steels Overview page.

        Coil for Conversion To: Coils 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 dimensions outside the noted range. Slitting capabilities are determined by strength levels and thicknesses, so please inquire all slit coil opportunities.

        Mill Plate: Please inquire for plate dimensions outside the noted range.

        Mechanical Properties

        Tensile testing is performed in the tranverse direction. Tensile property requirements are tabulated below:

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          Grade Thickness
          (inmm)          		 Yield strength
          (min ksi)          		 Tensile strength
          (ksi)          		 Elongation in 2" 1)
          (min %)          		 Elongation in 8" 1)
          (min %)
          A656 Grade 70 0.100 - 1.002.54 - 25.4 70 80 17 14
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          Comparison

            1) For plates wider than 24 in., the elongation requirement is reduced three percentage points. Additional elongation requirement adjustments are allowed per the Tension Tests section of Specification ASTM A6.

            Tolerances

            Tolerances for Mill Plate:
            Thickness, width and length tolerances for A656, Grade 70 plates are in accordance with ASTM A6. ASTM A6 Standard Flatness tolerances are available for all plate thicknesses.

            Tolerances for Temper Leveled Plate:
            Thickness, width and length tolerances for A656, Grade 70 plates are in accordance with ASTM A6. ASTM A6 Half-Standard Flatness tolerances or better are available for temper leveled plates. Flatness capabilities are determined bythe processing line and the minimum yield strength of the material.

            Tolerances for Coils for Conversion To:
            For minimum gauge orders, thickness and width tolerances are in accordance with the respective ASTM specifications of A568 for thicknesses of less than 0.230 inches, exclusive, and A635 for thicknesses of 0.230 inches to 1.00 inch, inclusive. Thickness tolerances are in accordance with Table S1.1 found in each of the ASTM specifications of A635 and A568, respective of thickness. Width tolerances are in accordance with Table 6 of ASTM A568 and Table 3 of ASTM A635. Thickness tolerances for nominal gauge orders must be inquired.

            All tolerances will be confirmed to the customer via SSAB's Order Acknowledgement document.