ASTM A815 S31803 Duplex Stainless Steel Butt weld Y Tee Pipe Fitting B16.9
S31803 is an austenite-bainite duplex stainless steel, also known as 2205 stainless steel, whose grade is derived from the complexity of the composition of the steel. The "S" represents stainless steel, while the "31803" represents the chemical elements contained in it, namely chromium (Cr), nickel (Ni), molybdenum (Mo) and copper (Cu).
S31803 has high corrosion resistance and mechanical properties, can withstand strong pressure and thermal stress and maintain stability, so it is widely used in many fields. Its corrosion resistance makes it an excellent material for the chemical industry, petroleum industry, pulp and paper industry, etc. Its good strength and ductility make it widely used in the fields of shipbuilding, construction, bridge and machine building.
Chemical Composition
| C | Cr | Ni | Si | Mn | P | Mo |
| 0.30 max | 21-23 | 4.5-6.5 | 1 max | 2 max | 0.03 max | 2.5-3.5 |
Physical Property
| Density | Thermal Expansion | Modulus of Elasticity | Thermal Conductivity |
| 7.805 g/cm3 | 13.7 x10^-6 /K | 200 GPa | 19.0 W/m.K |
Mechanical Property
| Proof Stress | Tensile Strength | Elongation A50 mm | Hardness Brinell |
| 450 Min MPa | 620 Min MPa | 25 Min % | 290 Max HB |
Application:
1.S31803 stainless steel is widely used in the chemical industry. Chemical industrial processes produce acidic liquids, salty liquids, and other harmful substances. These acidic and salty compounds often have a serious corrosion effect on conventional steel, leading to damage and failure of equipment. The S31803 stainless steel has a high corrosion resistance, can be low resistance to the erosion of these harmful substances, so it can be used in the manufacture of chemical pipelines, storage tanks, reactors and other equipment.
2.S31803 stainless steel is also widely used in the petroleum industry. In the process of oilfield development and production, various acidic and high salinity liquids, gases and high temperature and pressure conditions put forward high requirements for equipment materials. Because of its excellent characteristics such as corrosion resistance and high temperature resistance, S31803 stainless steel has been widely used in oil exploitation, production and processing, and the equipment produced can withstand higher pressure and high temperature conditions, and extend the service life of the equipment.
3.S31803 stainless steel is also commonly used in the pulp and paper industry. In pulp production, there will be some corrosive liquids, chemicals and gases and other substances, which will have a corrosive effect on the general steel. Due to its strong corrosion resistance, S31803 stainless steel can well resist the construction of these harmful substances, and the equipment produced can be more durable than other steels, strengthening the performance and service life of the production equipment.
4.S31803 stainless steel is also a very common material in the fields of shipbuilding, construction, Bridges and machine manufacturing. In these areas, equipment requires cleanliness, corrosion resistance and high strength, and S31803 stainless steel has these excellent physical and chemical properties. Therefore, S31803 stainless steel is widely used in the manufacture of various equipment, facilities and machinery and other large-scale engineering projects.
5.the excellent characteristics of S31803 stainless steel, such as corrosion resistance, high temperature resistance, high strength and ductility, make it widely used in the chemical industry, petroleum industry, pulp and paper industry and other occasions, but also in the shipbuilding, construction, bridge and machine manufacturing and other fields have been widely used.
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ASTM A815 S31803 Duplex Stainless Steel Butt Weld Y Tee Pipe Fitting B16.9 Images
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