Place of Origin: | Guangdong |
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Location: | Jiaxing, Zhejiang, China (Mainland) |
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Business Type: | Manufacturer |
Main Products: | Duplex Steel Tube, Duplex Steel Pipe, Stainless Steel Coiled Tubing |
Model No.: | AIA-1 |
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Food Industry Duplex Stainless Steel Tube ASTM A789 UNS S32750
Super duplex stainless such as duplex is a mixed microstructure of austenite and ferrite which has improved strength over ferritic and austenitic steel grades . The main difference is super duplex has a higher molybdenum and chromium content which gives the material greater corrosion resistance . Super duplex has the same benefits as its counterpart - it has lower production costs when compared with similar ferritic and austenitic grades and due to the materials increased tensile and yield strength , in many cases this gives the purchaser the welcomed option of purchasing smaller thicknesses without the need to compromise on quality and performance .
Chemical Composition | |||||||||
Grade | C | Si | Mn | P | S | Cr | Ni | Mo | N |
max | max | max | max | max | |||||
UNS S32750 | 0.03 | 0.8 | 1.2 | 0.03 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
UNS S31803 | 0.03 | 1 | 2 | 0.02 | 0.02 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
Physical Properties | |||||||||
Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC | / | ||||
UNS S32750 | 550 | 800 | 15 | 20 | / | ||||
UNS S31803 | 450 | 620 |
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