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1. DH500 steel plate is classified as ultra-high-strength ship and marine structural steel plate. Judging from the development of higher-strength ship plates in the world today, low-carbon equivalent, microalloying, controlled rolling and controlled cooling, heat treatment and other process technologies are widely used. The participation of microalloying elements can not only improve the strength, compensate for the strength loss caused by the reduction of carbon equivalent, and improve the welding performance, mechanical properties and process performance of the steel. Because of the high-strength ship plate application environment requirements of DH500 steel plate, it can meet the requirements of high strength, high toughness, high welding performance, and thickness direction performance.
2. DH500 steel plate heat treatment and performance specifications:
Heat treatment: TMCP, quenching and tempering, TMCP+ tempering, Z25 or Z35 can be selected. Flaw detection specification requirements, flaw detection level requirements, Z-direction performance requirements, classification society certification requirements, and requirements for adding special alloy elements, etc. Performance specification: GB 712.
3. Chemical composition of DH500 steel plate (melting analysis %):
Steel plate trademark: DH500 steel plate
C≤0.20; Si≤0.55; Mn≤1.70; P≤0.25; S≤0.25; N≤0.020.
4. Mechanical properties of DH500 steel plate:
Steel plate trademark: DH500 steel plate;
Yield strength≥500; Tensile strength 610-770; Elongation%:≥16;
Experimental temperature/℃: -40; impact energy Akv/J longitudinal direction: C ≥50;
5. DH500 steel plate production process:
The steel is tempered by a converter or an electric furnace, and if necessary, the essence of the furnace can be carried out. The Z-direction steel plate shall be subjected to ultrasonic flaw detection, and the flaw detection level shall be indicated.
GB T 5312 Carbon and carbon-manganese steel seamless steel tubes and pipes are mainly for ship use, also known as shipbuilding steel pipes. Under GB T 5312, there are mainly 5 steel grades: grade 320, 360, 410, 460 and 490. Each grade covers three levels: I, II, III.
Angle steel, commonly known as angle iron, is a long strip of steel whose sides are perpendicular to each other. There are equal angle steels and unequal angle steels. The two sides of equal angle steel are equal in width. The unequal angle steel is also known as L shape profile steel.
Flat bar steel can be produced according to the user's needs, with fixed thickness, width and length. It can reduce the cutting process for users, reduce the consumption of labor and materials, and also reduce the processing loss of raw materials.
Bulb flat steel for shipbuilding
The bulb flat steel is a kind of medium section material which is mainly used in the field of shipbuilding and bridge building, and the shipbuilding bulb flat steel is an auxiliary medium section material for shipbuilding.
The steel for shipbuilding and oil platform---FH40, is the high tensile strength steel.The shipbuilding steel FH40 is the Hull structural steel.We can provide FH40 shipbuilding steel plate price.
The steel for shipbuilding and oil platform---EH40, is the high tensile strength steel.The shipbuilding steel EH40 is the Hull structural steel.We can provide EH40 shipbuilding steel plate price.
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