ABS FQ63 steel plates are a highly specialized grade of steel designed to meet the rigorous demands of the shipping industry. These plates exhibit exceptional strength, toughness, and weldability, ensuring the safety and reliability of vessels across a wide range of operating conditions.
Chemically, ABS FQ63 steel plates are composed primarily of iron, with controlled amounts of carbon, manganese, silicon, phosphorus, sulfur, and other alloying elements. The precise balance of these elements ensures optimal mechanical properties, corrosion resistance, and workability.
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ABS FQ63 Extra high Strength Chemical Composition in Tempering and Quenching |
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Grade |
The Element Max (%) |
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C |
Si |
Mn |
P |
S |
N |
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|
AB/FQ63 |
0.18 |
0.55 |
1.60 |
0.025 |
0.025 |
0.02 |
Crack Sensitivity: Pcm = (C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B)%
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
In terms of mechanical properties, ABS FQ63 steel plates possess high yield and tensile strengths, allowing them to withstand significant loads and pressures. They also exhibit good ductility and toughness, enabling them to absorb impact energy without fracturing.
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ABS FQ63 Extra high strength property in tempering and quenching |
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Grade |
Mechanical Property |
Charpy V Impact Test |
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Yield |
Tensile |
Elongation |
Degree |
Energy 1 |
Energy 2 |
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|
Min Mpa |
Mpa |
Min % |
-60 |
J |
J |
|
|
AB/FQ63 |
620 |
720-890 |
15 |
41 |
62 |
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Note: Energy 1 is transverse impact test, Energy 2 is longitudinal |
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The heat treatment state of these steel plates is carefully controlled to ensure consistency in mechanical properties. Typically, they are supplied in the normalized condition, which improves their toughness and impact resistance.
ABS FQ63 steel plates are available in a range of sizes and thicknesses to meet specific shipbuilding requirements. This flexibility allows for efficient material utilization and reduced waste during the construction process.
Impact testing is a crucial aspect of the quality control process for ABS FQ63 steel plates. These tests evaluate the material's ability to withstand sudden loads and shocks, ensuring its suitability for use in marine environments.
The primary application scenarios for ABS FQ63 steel plates include the construction of hulls, decks, and other structural components of ships and vessels. They are widely used in both commercial and military shipping due to their superior performance under various loading and environmental conditions.
