ASTM A633 Structural Steel Plate

Leeco® Steel stocks and supplies the ASTM A633 structural steel plate, which offers stronger notch toughness.

Overview:

  • Normalized high-strength structural steel grade ideal for welding, riveting or bolting.
  • Available in four grades: A, C, D and E.
  • Exhibits greater notch toughness in low ambient temperatures than compared to as-rolled materials of similar strength.
  • Charpy test requirements for specific zones and climates may be requested.
  • May be multiple-certified as API or ABS specifications on Mill Test Report, but guaranteed to be certified to meet ASTM A633 standards.

 

Available Sizes

Leeco Steel stocks the following standard sizes, but other sizes may be available for special orders.

  THICKNESS WIDTH LENGTH
A633 (all grades) 1/4" – 6" 48" – 120" Up to 480"

Minimum order weight in the USA is 20 tons. For orders weighing less than 20 tons, additional freight surcharges may be applied. Minimum order weight for orders outside of North America is 500 MT.

Material Properties

The following material properties are ASTM specifications and will be confirmed on the Mill Test Report.

Grade Yield Point (ksi) Tensile Strength (ksi) Min. 8” Elongation %
A 42 63-83 18
C & D ≤2.5” thick 50 70-90 18
C & D >2.5" thick to 4" thick. 46 65-85 18
E ≤4" thick 60 80-100 18
E Over 4" thick to 6" thick. 55 75-95 18

 

Chemical Composition

The following composition properties are ASTM specifications for A633 grades.

Grade A  
Carbon max 0.18%
Manganese 1.00-1.35%
Phosphorus max 0.030%
Sulfur max 0.030%
Silicon 0.15-0.50%
Columbium 0.05% max

 

Grade C  
Carbon max 0.20%
Manganese 1.15-1.50%
Phosphorus max  0.030%
Sulfur max 0.030%
Silicon 0.15-0.50%
Columbium 0.01-0.05%

 

Grade D  
Carbon max 0.20%
Manganese, ≤1 1/2" thick 0.70-1.35%
Manganese, Over 1 1/2" to & incl 4" thick 1.00-1.60%
Phosphorus max 0.030%
Sulfur max 0.030%
Silicon 0.15-0.50%
Copper max 0.35%
Nickel max 0.25%
Chromium max 0.25%
Molybdenum max 0.08%

 

Grade E  
Carbon max 0.22%
Manganese 1.15-1.50%
Phosphorus max 0.030%
Sulfur max 0.030%
Silicon 0.15-0.50%
Vanadium 0.04-0.11%
Nitrogen max 0.03%