ASTM A573 Grade 70

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General Product Description

ASTM A573 is the Standard Specification for Structural Carbon Steel Plates with Improved Toughness for carbon-manganese-silicon plates up to 1.5 inches in thickness for service primarily at atmospheric temperatures when improved toughness is important. ASTM A573 Grade 70 has specified tensile strength range of 70-90 ksi.

Available Dimensions

Grade
Grade
ASTM A573 Grade 70
Product type
Mill Plate
Thickness
(in)
0.188 - 1.500 3)
Width
(in)
72 - 120 3)
Length
(in)
120 - 1020 3)
Grade
Grade
ASTM A573 Grade 70
Product type
Temper Leveled Plate 1)
Thickness
(in)
0.100 - 0.500
Width
(in)
48 - 96
Length
(in)
72 - 720
Grade
Grade
—
Product type
Coil for Conversion To 2)
Thickness
(in)
0.188 - 0.500 4)
Width
(in)
48 - 96 4)
Length
(in)
—

1) 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.

2) 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.

3) Please inquire for plate dimensions outside the noted range.

4) 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.

Mechanical Properties

Tensile testing is performed in the tranverse direction.

Grade
Grade
ASTM A573 Grade 70
Yield strength
(min ksi)
42
Tensile strength
(ksi)
70 - 90
Elongation in 2" 1)
(min %)
21
Elongation in 8" 1)
(min %)
18

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.

Tolerances

Tolerances for Mill Plate:
Thickness, width and length tolerances for A573, Grade 70 plates are in accordance with ASTM A6. ASTM A6 Half-Standard Flatness tolerances are available for plate thicknesses of 3/8 inches to 1.5 inches. Inquire for specific mill flatness capabilities.

Tolerances for Temper Leveled Plate:
Thickness, width and length tolerances for A573, Grae 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 by the 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.