ASTM-A 36 SPECIFICATIONS

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Product

Shapes*

Plates

Bars

Thickness

All

To 3/8 in. incl.

Over 3/8 to 1 1/2 in. incl.

Over 1 1/2 to 2 1/2 in. incl.

Over 2 1/2 to 4 in. incl.

Over 4 in.

To 3/8 in. incl.

Over 3/8 to 1 1/2 in. incl.

Over 1 1/2 to 4 in. incl.

Over 4 in.

Carbon, max. %

0.26

 0.25

0.25

0.26

0.27

0.29

0.26

0.27

0.28

0.2

Manganese, %

0.80 to 1.20

0.80 to 1.20

0.85 to 1.20

0.85 to 1.20

0.60 to 0.90

0.60 to 0.90

0.60 to 0.90

Phosphorus, max. %

0.04

 0.04

0.04

0.04

0.04

0.04

0.04

0.04

0.04

0.04

Sulfur, max. %

0.05

 0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

0.05

Silicon, %

0.15 to 0.30

0.15 to 0.30

0.15 to 0.30

Copper, min. %, (when copper steel is specified.)

0.20

0.20 

 0.20

 0.20

 0.20

 0.20

 0.20

 0.20

 0.20

 0.20

 *Manganese content of 0.85 to 1.35 % and silicon content of 0.15 to 0.30 % is required for shapes over 426 lb./ft.

TENSILE REQUIREMENTS

 Plates, ShapesA, and Bars

 Tensile strength, psi

 58,000-80,000

 Yield point, min. psi

 36,000B

 Plates and Bars

 Elongation in 8 in. min. %

 20C

 Elongation in 2 in. min. %

 23

 Shapes

 Elongation in 8 in. min. %

 20C

 Elongation in 2 in. min. %

 21A

AFor wide flange shapes over 426 lb./ft. tensile strength minimum of 58,000 only and elongation in 2 in. of 19 % minimum applies.

BYield point 32,000 psi for plates over 8 in. in thickness.

CSee Section 7(c) ASTM manual.

 

PLATE WEIGHT FORMULA

Length(Ft.) x Width(Ft.) x Wt. Sq.

Ft. = Wt./Plate or .2836 x Length

(Inches) x Width(Inches) x Thickness

= Wt. of One Plate