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What are the varieties of special steel
- The alloy steel and high alloy steel special steel production accounted for 70%, mainly for special steel carbon structural steel, carbon tool steel, carbon spring steel, alloy spring steel, alloy structural steel, bearing steel, alloy tool steel, alloy tool steel, high-speed tool steel, stainless steel, heat-resistant steel and high-temperature alloy, precision electrothermal alloy alloy, etc..s
What is special steel? What is special steel?
- However, special steel refers to stainless steel, other special steel plate, such as automobile steel plate and military steel plate, etc., stainless steel is divided into austenite and ferrite, such as 304316410439 stainless steel varieties. According to the specific use of stainless steel quality, such as 409L can be used as a container, microwave oven and elevator industry, 304 can be used as medical devices. The market prospect is not an ordinary person can predict, domestic steel prices are monthly pricing, big companies such as Baosteel, TISCO, Zhangjiagang Pohang. Lead the trend of special steel prices.s
Is the steel column of the steel structure HM a special steel?
- Because the legs are parallel inside and outside, the legs are at right angles and are assembled and assembled into components to save welding and riveting, and the work load is 25%. Often used in large capacity requirements, large cross section stability, such as buildings, high-rise buildings, as well as bridges, ships, lifting transport machinery, equipment foundation, support, foundation piles.s
What grade of iron powder should be used for processing special steel? Are there any other elements on the request? How much are they?
- Special steel into high quality carbon steel, alloy steel, high alloy steel (alloy element is greater than 10%) three categories, including alloy steel and high alloy steel special steel production accounted for 70%.s
How can I determine the cooling water flow of square billet mold for special steel?
- Mold heat balance method. If the heat of the molten steel in the mould is taken away from the cooling water, the heat released by the solidification of the molten steel is equal to the amount taken away by the cooling waters
What's the difference between special steel and ordinary steel?
- Special steel is a kind of steel with special chemical composition (alloying), produced by special process, special organization and performance, and can meet special requirement.s
Classification of special steel products
- Carbon structural steels are normally used directly under heat supply without heat treatment. The mass fraction of Q195, Q215, Q235 are usually of low carbon steel, good welding performance, good plasticity and toughness, a certain strength, often rolled into a sheet, steel, welded steel pipe, used for bridges, buildings and general manufacturing rivet, screw and nut parts etc.. Q255 and Q275 mass fraction of carbon steel is slightly high, high strength, good plasticity and toughness, can be welded steel, steel rolling, usually forming and plate structure and simple manufacturing machinery, connecting rod, gear coupling, pins and other parts. Plain carbon steel high carbon steel is basically contains alloy elements, the carbon content in the range of 0.65% ~ 1.35%, the production of low cost, easy to obtain raw materials, good machinability, after treatment can obtain high hardness and high wear resistance, so the steel is widely used to manufacture various. Cutting tool, mold, measuring tools.But the red hardness difference of this kind of steel, that is, when the working temperature is greater than 250 degrees, the hardness and wear resistance of steel will decline rapidly, and lose their ability to work. In addition, if carbon tools steel is made into larger parts, it is difficult to harden, and deformation and crack are easy to occur. This kind of steel must ensure both chemical composition and mechanical properties. The number is two digits by the average mass fraction of carbon steel in the 000 fraction (W C * 10000). For example, steel 45 shows the average mass fraction of carbon in steel is 0.45%; 08 steel indicates the average mass fraction of carbon in steel is 0.08%.s
Carbon steel and stainless steel and pattern steel and special steel and high carbon steel difference
- Steel containing less than 0.25% of carbon is low carbon steel, 0. 25%-0.6% is medium carbon steel, more than 0.6% is high carbon steel, low, medium and high carbon steel can be called carbon steel, useful alloy composition is greater than 3, alloy steels
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