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  4. ASTM A36 Specification

ASTM A36 Specification

Flat, Spring, Lock, Plain, Split,Belleville, Washers

Scope

ASTM A36 specification covers carbon steel shapes, plates, and bars of structural quality for use in riveted, bolted, or welded construction of bridges and buildings, and for general structural purposes.
Supplementary requirements are provided for use where additional testing or additional restrictions are required by the purchaser. Such requirements apply only when specified in the purchase order.
When the steel is to be welded, a welding procedure suitable for the grade of steel and intended use or service is to be utilized. See Appendix X3 of Specification A6/A6M for information on weldability.

Related Specifications of ASTM A36

ASTM A36 Chemical Composition

Products Thickness, inch. C, max, % Mn, % P, max, % S, max, % Si, % Cu, min, %
[Note C]
Shapes [Note A] All 0.26 - 0.04 0.50 0.40 max 0.20
Plates [Note B] To 3/4, Inch 0.25 - 0.04 0.50 0.40 max 0.20
Over 3/4 to 1-1/2, Incl. 0.25 0.80 - 1.20 0.04 0.50 0.40 max 0.20
Over 1-1/2 to 2-1/2, Incl. 0.26 0.80 - 1.20 0.04 0.50 0.15 - 0.40 0.20
Over 2-1/2 to 4, Incl. 0.27 0.85 - 1.20 0.04 0.50 0.15 - 0.40 0.20
Over 4 0.29 0.85 - 1.20 0.04 0.50 0.15 - 0.40 0.20
Bars [Note B] To 3/4, Incl. 0.26 - 0.04 0.50 0.40 max 0.20
Over 3/4 to 1-1/2, Incl. 0.27 0.60 - 0.90 0.04 0.50 0.40 max 0.20
Over 1-1/2 to 4, Incl. 0.28 0.60 - 0.90 0.04 0.50 0.40 max 0.20
Over 4 0.29 0.60 - 0.90 0.04 0.50 0.40 max 0.20
  • A Manganese content of 0.85–1.35 % and silicon content of 0.15–0.40 % is required for shapes with flange thickness over 3 in. [75 mm].
    B For each reduction of 0.01 percentage point below the specified carbon maximum, an increase of 0.06 percentage point manganese above the specified maximum will be permitted, up to the maximum of 1.35 %.

ASTM A36 Mechanical Requirements

Tensile Requirements

Plates, Shapes,B and Bars Plates and BarsD,E Shapes
Tensile strength, ksi [MPa] Yield point, min, ksi [MPa] Elongation in 8 in. [200 mm], min, % Elongation in 2 in. [50 mm], min, % Elongation in 8 in. [200 mm], min, % Elongation in 2 in. [50 mm], min, %
58-80 [400-550] 36 [250]C 20 23 20 21B
  • A See the Orientation subsection in the Tension Tests section of Specification A6/A6M.
    B For wide flange shapes with flange thickness over 3 in. [75 mm], the 80 ksi [550 MPa] maximum tensile strength does not apply and a minimum elongation in 2 in. [50 mm] of 19 % applies.
    C Yield point 32 ksi [220 MPa] for plates over 8 in. [200 mm] in thickness.
    D Elongation not required to be determined for floor plate.
    E For plates wider than 24 in. [600 mm], the elongation requirement is reduced two percentage points. See the Elongation Requirement Adjustments subsection under the Tension Tests section of Specification A6/A6M.

ASTM A36 Certifications

  • EN 10204 3.1
  • EN 10204 3.2
  • PED 2014/68/EC
  • MERKBLATT AD 2000 W2/W7/W10
  • API 20 E BSL 1/ BSL 2
  • NACE MR 0175
  • NACE MR 0103

ASTM A36 Supplementary Requirements

S5 Charpy V-Notch Impact Test
S30 Charpy V-Notch Impact Test for Structural Shapes: Alternate Core Location
S32 Single Heat Bundles
S32.1 Bundles containing shapes or bars shall be from a single heat of steel.