310S stainless
304ti stainlesWhen the stress exceeds the limit, even if the stress no longer increases, the steel or sample continues to have obvious plastic deformation. This phenomenon is called yield. Professional stainless steel plate, stainless steel belt and stainless steel pipe ensure quality, service and quality. Your satisfaction is our pursuit! Welcome to inquire The small stress value when yielding phenomenon occurs is the yield point. Let PS be the external force at the yield point s and fo be the cross-sectional area of the sample, then the yield point & sigma; s = PS / fo (MPA) MPa is called MPa, which is equal to n (Newton) / mm (MPA = 106pa, PA: Pascal = n / m.
Since the invention of stainless steel at the beginning of this century, stainless steel has integrated the image of modern materials and the excellent reputation in architectural applications, which makes its competitors envy. Stainless steel will not produce corrosion, pitting, corrosion or wear. Stainless steel is also one of the metal materials with high strength. Because stainless steel has good corrosion resistance, it can keep the integrity of engineering design of structural components. Chromium containing stainless steel also integrates mechanical strength and high extensibility, which is easy to process and manufacture parts, superheater and reheater are the parts with high working temperature and bad working environment. Previously, all such materials used in China were imported from abroad, while only 10 steel material manufacturers in the world have limited capacity. Such materials have a large gap, expensive import prices, difficult procurement and short supply, which seriously affected the production of ultra supercritical boilers and the development of electric energy in China. At present, China's demand for utility boiler tubes is about 30000 tons, and with the continuous improvement of ultra (supercritical) power generation technology, the demand is expanding. Several large domestic enterprises have invested a lot of human and financial resources in the R & D and production of such products, and have made considerable achievements. On the one hand, it has made its own contribution to the development of national electric power industry, but also brought considerable economic benefits to enterprises.
Physical properties the total heat transfer coefficient of metal depends not only on the thermal conductivity of metal, but also on other factors. In most cases, the heat dissipation coefficient of film, rust scale and the surface condition of metal. Stainless steel can keep the surface clean, so its heat transfer is better than other metals with higher thermal conductivity. Liaocheng Suntory stainless steel provides the technical standard of stainless steel plate Stainless steel plate high-strength stainless steel plate with excellent corrosion resistance, bending workability, toughness of welding parts and stamping workability of welding parts. Specifically, Si, Mn, P, s, Al and Ni with an appropriate content of less than 0.02% of C, less than 0.02% of N, more than 11% of Cr and less than 17% shall meet 12 & le; Cr Mo 5Si & le; 11 & le; Ni 30 (c n) 0.5 (Mn Cu) & le; Cr 0.5 (Ni Cu) 3Mo & Ge; 0 0.006 & le; C, n & le; 0.030 stainless steel plate is heated to 850 ~ 1250 ℃, and then cooled at a cooling rate of more than 1 ℃ / S. in this way, it can become a high-strength stainless steel plate with martensite content of more than 12%, high strength of more than 730mpa, corrosion resistance and bending processability, and excellent toughness of welding heat affected zone. It can be significantly improved by reusing Mo, B, etc High stamping performance of welded parts.
.Batch size: a small number of single batch products will affect the unit price.
5cm thick stainless steel plate shall be processed with special cutting tools, such as laser cutting machine with large wattage
Good corrosion resistance, suitable for a variety of media; The addition of Mo improves the corrosion resistance to reducing salts; It is resistant to marine and industrial atmospheric erosion, and can be used in seawater equipment; Due to its low carbon content, it has excellent grain boundary corrosion resistance; It can be used in pulp and paper machinery; Good processability and weldability.
Han Jianbiao, an analyst at Zoomlion steel, pointed out that since, China's steel pipe exports have been only 30000 or 40000 tons per month, of which seamless pipe exports are only about 10000 tons per month.
Stainless steel pipe is durable and has been recognized by the engineering community and relevant parties are starting from reducing the wall thickness and lowering the grid, so as to facilitate further development. In particular, the price of stainless steel pipe is not high, so the supporting connection, the reliability and price of pipe fittings are the main factors determining its development. Domestic developers have independently developed connection technology and pipe fittings in Sichuan Guangdong, Zhejiang, Jiangsu and other places, which is a promising pipe. The Ministry of construction and relevant departments also attach great importance to this new type of pipe. According to China technology market management promotion center and gksz [2001] No. 71 document on Application & ldquo; High diameter to wall ratio and high precision stainless steel medium and high pressure water supply pipes and supporting fittings and special technology & rdquo; It is learned from the notice that the application of stainless steel pipe technology and product is of great significance to improve the grade of modern buildings in China and improve and ensure the water quality of water supply.
This kind of steel pipe can be divided into stainless steel seamless steel pipe and stainless steel welded steel pipe (slotted pipe). According to different manufacturing processes, it can be divided into several basic types: hot rolling, it can be divided into circular pipe and special-shaped pipe. Circular steel pipe is widely used, but there are also some square, rectangular, semicircular, hexagonal, equilateral triangle Octagonal and other special-shaped stainless steel pipes.
Good reputation.2. Raw material problem of stainless steel pipe. If the hardness is too low, it is not easy to polish (BQ is not good). If the hardness is too low, orange peel is easy to appear on the surface during deep drawing, which affects BQ performance. BQ with high hardness is relatively good.
This kind of steel pipe can be divided into stainless steel seamless steel pipe and stainless steel welded steel pipe (slotted pipe). According to different manufacturing processes, it can be divided into several basic types: hot rolling, cold drawing and cold rolling. According to the section shape,Stainless steel connecting pipe, it can be divided into circular pipe and special-shaped pipe. Circular steel pipe is widely used, but there are also some square, rectangular, semicircular, hexagonal, equilateral triangle Octagonal and other special-shaped stainless steel pipes.
◆ stainless steel and alloy tool steel (C content is expressed in thousandths), such as 1 thousandth of 1Cr18Ni9 (i.e., stainless C & LE); 0.08%, such as 0Cr18Ni9 ultra low carbon C & le; 0.03% if the international stainless steel mark, the American Iron and Steel Institute uses three digits to mark various standard grades of malleable stainless steel. Among them, austenitic stainless steel is indicated by numbers of 200 and 300 series,0.03mm stainless steel strip, some common austenitic stainless steels are marked with 20 30, 316 and 310, ferritic stainless steels are marked with 430 and 446, martensitic stainless steels are marked with 4420 and 440C, duplex (austenitic ferrite), stainless steels, precipitation hardening stainless steels and high alloys with iron content less than 50% are usually named by patent name or trademark.
≥205TS（Mpa）
How many?.[(outer diameter wall thickness) wall thickness] 0.02491 = kg m (weight per meter)
Some reasons for product composition ratio: in order to reduce the production cost, reduce the proportion content of some important elements such as chromium and nickel, and increase the content of other elements such as carbon. This production phenomenon that the composition ratio is not strictly in accordance with the product model and product characteristics not only greatly reduces the product quality, for example, when the chromium content of stainless steel pipe is insufficient, equipment and production industries. At the same time, they also affect the appearance and oxidation resistance of products.
The width of coiled material is variable, including 30mm.60mm.45mm.80mm.100mm.200mm, etc. it can also be divided according to customer requirements
.Stainless steel has the ability of atmospheric oxidation, that is, it does not rust. At the same time, it also has the ability of corrosion resistance in the medium containing acid, that is, corrosion resistance. However, mutual state, service conditions and environmental medium type. For example 304 has absolutely excellent corrosion resistance in dry and clean atmosphere, but it is moved to In coastal areas, in the sea fog with a lot of salt, it will soon rust, while 316 stainless steel performs well. Therefore, not any kind of stainless steel can resist corrosion and rust at any time
In view of the continuous vibration of stainless steel pipe shopping malls, even & ldquo; Roller coaster & rdquo; Market, stainless steel pipe market participants are implementing it carefully & ldquo; Fast forward and fast Exit & rdquo; Therefore, the national stainless steel pipeline inventory has been at a low level. High price various specifications of stainless steel plate, stainless steel coil,Stainless steel water purification pipe, stainless steel belt and stainless steel pipe. Waste merchants, industrial companies, enterprises and power departments are welcome to visit and negotiate with the company! At the beginning, the social inventory of stainless steel pipes should progress with the progress of economic aggregate, and with the progress of total output and demand. However, stainless steel pipe inventory did not increase too much, or even did not increase, indicating a relative decline in social inventory level. Low inventory has indeed played a role in market stability.
. 18%), which is better than l and 317L in most environments.