Description
1.4845 / 310S Stainless Steel Round Pipe | Stainless Steel Square Tube
310s is one of the most high temperature resistant materials.
It is made of heat-resistant parts and oxidation-resistant steel at temperatures below 1100°C; it has the characteristics of stable and fine filtering performance.
This model can be applied to exhaust pipes, microwave ovens, high-temperature furnaces, cremation furnaces and other steels that require heat resistance, and high-temperature/high-heat contact parts.
Alternative grades of equivalent materials
| China * GB | GB24511 | S31008 |
| Japan | JIS | SUS310S |
| United States of America | ASTM | 310S |
| UNS | S31008 | |
| South Korea | KS | STS310S |
| European Union | BSEN | 1.4845 |
| India | IS | – |
| Australia | AS | 310S |
| Taiwan, China | CNS | 310S |
| Germany | DIN | X8CrNi25-21 |
| United Kingdom | BS970 BS1449 | – |
| Belgium | BS970Part1 | – |
Standard Specification Of 310s Pipe / Tube
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Items
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Square tubes, rectangular tubes, round tubes
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Thickness
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0.5~75mm
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Specifications
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Outer diameter (pipe):
1) Round tube: 8mm to 680 mm 2) Square tube: 10x10mm to 300x300mm 3) Rectangular tube: 10x20mm to 120x180mm |
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Surface
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Polishing,annealing,pickling,bright
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Technology
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Cold/hot rolling
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Test
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Squash test, extended test, water pressure test, crystal rot test, heat
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Packing
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Standard export packing
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Payment
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T/T, L/C, Western Union
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Delivery time
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2-15 working days upon receipt of the deposit
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MOQ
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1 ton
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Application
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Pipe: Decoration, Construction, Upholstery, Water supplying…
handrail, railing, staircase, door, window, balcony, fence, bench, furniture etc, |
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Machining
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Custom, Kaiping, cutting, pattern
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Used
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Factory, decoration, food
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Analysis of High Temperature Oxidation Resistance of 310S Stainless Steel Heat-resistant Steel
High temperature oxidation resistance is an important performance index of stainless steel heat-resistant steel 310S, and the special alloy elements in the steel are the key factors to improve and enhance the oxidation resistance of the alloy. Under the premise of ensuring basic performance, it is very important to add alloying elements appropriately. A very good method, because these alloying elements can form a dense and thin oxide film on the surface of stainless steel, thereby increasing the high temperature oxidation resistance of the material.
310S heat-resistant stainless steel is a high-chromium high-nickel austenitic stainless steel. It not only has excellent corrosion resistance and mechanical properties, but also has good high temperature oxidation resistance and creep resistance. Therefore, it can be used to manufacture various high-temperature furnaces and high-temperature parts in special environments.
For the high temperature oxidation mechanism of heat-resistant stainless steel 310S, industry experts have also carried out corresponding research. Through the high temperature oxidation test of 310S stainless steel in the air, its high temperature oxidation performance was tested. Based on the analysis of the oxidation kinetics weight gain curve, the morphology, distribution and structure of the oxide film on the surface of the stainless steel material were studied, and the formation was explained. mechanism.
The experimental samples were taken from the austenitic heat-resistant stainless steel 310S hot-rolled sheet of Taiyuan Iron and Steel. The chemical composition is carbon 0.055, silicon 0.50, manganese 1.03, chromium 25.52, and nickel 19.25.
Cut the stainless steel sample into 30mm×15mm×4mmmm, and use 3 parallel samples for each test point. Grind the surface of the sample, sand it with water sandpaper to remove the surface oxide scale and wire cutting marks, and then clean it with ethanol and blow dry. In addition, prepare the same number of crucibles as the samples and number them separately. A resistance heating furnace is used for baking, so that the residual material in the crucible is fully volatilized and the quality is constant. Put the high temperature oxidation sample directly into the crucible and put it into the box-type resistance furnace for high temperature oxidation. The test atmosphere is air, and the oxidation temperature is 800, 900, and 1000°C; the processing time of each sample is 20, 40, 60, 80, 100, 120, 140h, respectively. After the oxidation is complete, weigh and record. Weighing instrument is an electronic analytical balance. After the high-temperature oxidation test is over, the oxidation product is analyzed with an x-ray diffractometer, and the surface morphology of the oxide film is analyzed with a scanning electron microscope and an energy spectrometer.
The test analysis data shows that the heat-resistant stainless steel 310S has good oxidation resistance at 800, 900, and 1000°C. At each temperature, there will be varying degrees of oxidative weight gain over time, but over time, the oxidation trend will also slow down. In addition, as the temperature continues to increase, the oxidation rate gradually increases.
Second, the oxide film on the surface of 310S stainless steel is composed of a dense spinel MnCr2O4 and Cr2O3 outer layer and SiO2 inner layer. As the temperature increases, the diffraction peaks of MnCr2O4 increase and the products increase. The three-layer dense structure combined with the good oxidation resistance of the oxide itself makes the heat-resistant stainless steel 310S overall exhibit excellent high-temperature oxidation resistance.
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