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Plate*

  Up thru 3/4 Over 3/4 thru 1-1/2 Over 1-1/2 thru 2-1/2 Over 2-1/2 thru 4 Over 4
Carbon 0.25 0.25 0.26 0.27 0.29
Manganese -- .80/1.20 .85/1.20 .85/1.20 .85/1.20
Phosphorus 0.04 0.04 0.04 0.04 0.04
Sulphur 0.05 0.05 0.05 0.05 0.05
Silicon .40 max .40 max .15/.40 .15/.40 .15/.40
Copper min % when copper steel is specified 0.20 0.20 0.20 0.20 0.20
           
* Note: For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted, up to the maximum of 1.35%.
 

Shapes*

Bars

  All Up thru 3/4 Over 3/4 thru 1-1/2 Over 1-1/2 thru 4 Over 4
Carbon 0.26 0.26 0.27 0.28 0.29
Manganese -- -- 0.60/0.90 0.60/0.90 0.60/0.90
Phosphorus 0.04 0.04 0.04 0.04 0.04
Sulphur 0.05 0.05 0.05 0.05 0.05
Silicon .40 max .40 max .40 max .40 max .40 max
Copper min % when copper steel is specified 0.20 0.20 0.20 0.20 0.20
           
* 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.
           
 

Typical A36 Mechanical Properties*

     
Tensile Strength: 58,000 - 80,000 psi      
Min. Yield Point: 36,000 psi **      
Elongation in 2": 23%      
         
* See ASTM Specification for specific adjustments.      
** Yield Point 32,000 psi for plates over 8 in.