1.What is carbon steel plate?
Carbon steel plate, also called carbon structural steel plate, refers to carbon steel with a carbon content of less than 0.8%. This type of steel contains less sulfur, phosphorus and non-metallic inclusions, so it has excellent mechanical properties. Carbon steel plates can be divided into three categories: low carbon steel, medium carbon steel and high carbon steel. The carbon content of low carbon steel is less than 0.25%, the carbon content of medium carbon steel is between 0.25%-0.6%, and the carbon content of high carbon steel is greater than 0.6%. This type of material has certain plasticity, toughness and strength, good machinability, and has good comprehensive mechanical properties after quenching and tempering treatment. However, their hardenability is poor, cracks are prone to occur, and their welding performance is not high. They require good preheating before welding and heat treatment after welding.Carbon steel plate is a material widely used in industry and other fields, including ordinary low carbon steel plates and special steel plates, such as low alloy high-strength steel and corrosion-resistant and heat-resistant clad steel plates. Ordinary low-carbon steel plates are divided into cold-rolled and hot-rolled. Cold-rolled steel plates have good surface quality and precise thickness dimensions. They are mostly used to make car bodies, etc., while hot-rolled plates are mostly used to make vehicle frames.
It should be noted that carbon steel plate and carbon plate are different materials. Carbon plates usually refer to plates made of carbon, which have higher strength and hardness, as well as better corrosion resistance and high temperature resistance. Carbon boards can be divided into two types: natural carbon boards and artificial carbon boards.
2.Types of carbon steel sheet
According to different chemical compositions, heat treatments and processing techniques, carbon steel plates can be divided into the following categories:(1) Structural carbon steel plate
Structural carbon steel plates are commonly used in construction, bridges, mechanical equipment and other fields. According to the difference in carbon content and strength, it can be further subdivided into low carbon steel plates, medium carbon steel plates and high carbon steel plates.
(2)Weather-resistant carbon steel plate
Weather-resistant carbon steel plates are resistant to atmospheric corrosion and are widely used in outdoor structures and decorations, such as bridges and building exterior walls. Common weather-resistant carbon steel grades include ASTM A588, ASTM A242, etc.
(3) Carbon steel plate for pressure vessels
Carbon steel plates used to manufacture pressure vessels need to have high strength and corrosion resistance. Common grades include SA516, SA285, etc.
(4) Aluminum galvanized carbon steel plate
Aluminum-galvanized carbon steel panels are coated with a layer of aluminum and zinc alloy on the surface to provide better corrosion resistance.
It is widely used in automobile manufacturing, home appliances, building materials and other fields.
In addition to the above common types of carbon steel plates, there are also other special-purpose carbon steel plates, such as wear-resistant carbon steel plates, thermally conductive carbon steel plates, etc. Choose the appropriate type of carbon steel plate according to specific needs. It should be noted that different carbon steel plates have different chemical compositions and performance characteristics and should be selected according to specific application requirements.
3.Specifications of carbon steel plates
Carbon steel plate specifications are mainly divided into two categories: conventional specifications and unconventional specifications. Conventional specifications refer to common dimensional specifications, including parameters such as thickness, width, and length. Unconventional specifications refer to some special-sized carbon steel plates, such as extra-thick plates, extra-wide plates, etc.Common carbon steel plate thicknesses usually range from 0.5mm to 300mm. Among them, thin carbon steel plates generally have a thickness between 0.5mm and 4mm and are commonly used in electronic products, auto parts and other fields; medium-thick carbon steel plates have a thickness between 4mm and 20mm and are commonly used in construction, machinery manufacturing and other industries; and thick carbon steel plates have a thickness between 4mm and 20mm and are commonly used in construction, machinery manufacturing and other industries. The thickness of profiled carbon steel plates is generally above 20mm and is suitable for large machinery and equipment, shipbuilding and other fields.
The width of carbon steel plates is generally between 1000mm and 3000mm, with common widths of 1000mm, 1250mm and 1500mm. The length is usually between 2000mm and 12000mm, and carbon steel plates of different lengths can be customized according to different needs.
4.Carbon steel plate material and application
The materials of carbon steel plates mainly include plain carbon steel, low alloy high-strength steel and high carbon steel. Plain carbon steel is the most commonly used carbon steel plate material. It has good weldability and processability and is widely used in automobile manufacturing, building structures and other fields. Low-alloy high-strength steel has high strength and corrosion resistance and is suitable for bridges, oil pipelines and other engineering projects. High carbon steel has higher hardness and toughness and is suitable for knives, springs and other fields.
5.Carbon steel plate astm standard
(1)ASTM A516 Grade 60 PlateThe ASTM A516 specification is the Standard Specification for Pressure Vessel Plates, Carbon Steel, for Moderate- and Lower Temperature Service for plates with the intended service in welded pressure vessels where improved notch toughness is important. SSAB's A516-60 and ASME SA516-60 steel plate products are made from carbon-manganese steels and produced to pressure vessel quality (PVQ) standards as delineated in ASTM A20/ASME SA20.
(2)ASTM A36
A36 carbon structural panel is an American standard specified in ASTM A36. This standard applies to riveted, bolted and welded structures used in bridges and construction, and to carbon steel sections, plates and rods for general structural steel. A36 is the most commonly used second-hand hot-rolled carbon structural steel. It has a minimum yield strength of 36k PSI and is easy to weld. At the same time, A36 can also be made into angle steel.
6. Manufacturing process of carbon steel plates
The manufacturing process of carbon steel plates mainly includes the following steps:(1) Select appropriate raw materials, including iron ore, alloy elements, etc.;
(2) Smelting raw materials into molten steel and carrying out slag and impurity removal treatment;
(3) Pour molten steel into the mold, cool and shape;
(4) Heat treat the formed steel plate to improve its performance;
(5) Cutting, bending, polishing and other processing operations to meet the needs of different fields.
