345D steel plate is a high-strength, low-alloy steel plate designed for excellent toughness and durability. It features good weldability, impact resistance, and corrosion resistance, and is commonly used in construction, machinery, and heavy-duty structural applications.
Product Parameters
|
Steel Grade |
345D (Low-Alloy High-Strength Structural Steel) |
|
Chemical Composition |
C ≤ 0.18 %, Si ≤ 0.55 %, Mn 1.00 1.60 %,other alloying elements controlled for "D" grade |
|
Minimum Yield Strength |
Thickness ≤ 16 mm: ≥ 345 MPa; 16 35 mm: ≥ 325 MPa; >35 mm: ≥ 295 MPa |
|
Tensile Strength Range |
470 630 MPa |
|
Elongation |
≥ 22 % |
|
Impact Toughness |
At –20 °C: minimum 34 J (longitudinal) |
|
Typical Thickness Range |
Up to ~200 mm |
|
Key Features |
High strength, good weldability, enhanced low-temperature toughness, low harmful impurities |
|
Typical Applications |
Structural engineering (bridges, highways), heavy-duty welded components, high-load structural parts |
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