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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"
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%