Exotic Alloy Duplex 2205 U-Bolt

**Product Information**
  • Model NO.: Duplex 2205
  • Type: Hexagon Head
  • Head Style: Hexagonal
  • Grade: Duplex 2205
  • Finish: Polishing
  • Nearest Port: Shanghai
  • Customized Size: Acceptable Upon Request
  • Processing Technology: Hot Forging
  • Specification: M5-M100
  • HS Code: 7318159090
  • Material: Duplex 2205
  • Connection: Common Bolt
  • Standard: DIN, ANSI, GB, JIS, BSW, GOST
  • Application: Machinery
  • Size: M5-M100
  • Means of Transportation: by Sea or by Air
  • Delivery Date: 30 days
  • Trademark: TM
  • Origin: China
Duplex 2205 (UNS S31803) is a nitrogen-enhanced duplex stainless steel designed to address common corrosion issues typically seen with 300 series stainless steels. The term "duplex" refers to a group of stainless steels that are neither fully austenitic, like 304, nor purely ferritic, like 430. The microstructure of 2205 consists of austenite surrounded by a continuous ferrite phase. In the annealed condition, it contains approximately 40-50% ferrite. Often called the "workhorse grade," 2205 is the most commonly used in the duplex family due to its excellent balance of strength and corrosion resistance. Its unique structure combines the benefits of both ferritic and austenitic alloys—offering high strength and resistance to stress corrosion cracking, along with good formability and corrosion resistance. It's important to note that the use of 2205 should be limited to temperatures below 600°F (315°C). Prolonged exposure to elevated temperatures can lead to embrittlement. This material is an economical choice for applications where 300 series stainless steels may be prone to chloride stress corrosion cracking. Stress corrosion cracking occurs when stainless steels are exposed to tensile stress while in contact with chloride-containing solutions. As temperature increases, so does the risk of this type of failure. The combination of chromium, molybdenum, and nitrogen gives 2205 excellent resistance to chloride pitting and crevice corrosion. This makes it ideal for marine environments, brackish water, bleaching operations, closed-loop water systems, and certain food processing applications. Compared to standard stainless steels like 316L and 317L, 2205 offers superior corrosion resistance in most environments.
Chemical Composition
Cr Ni Mo C N
22.0-23.0 4.50-6.50 3.00-3.50 0.030 Max 0.14-0.20
Mn Si P S Fe
2.00 Max 1.00 Max 0.030 Max 0.020 Max Balance
Mechanical Properties
Ultimate Tensile Strength, ksi Minimum 0.2% Yield Strength, ksi Minimum Hardness Max.
95 65 31 Rockwell C
Mark: TM · Material: Duplex 2205 (UNS S31803) · Finish: Polishing · Certificate: ISO9001:2008, SGS · Packaging Detail: 20-25kgs per carton, 36-48 cartons per pallet or according to customer’s requirement. · Customer Service: 24-hours standby, we listen to your every suggestion and feedback as soon as possible. TOMORROW Manufacturing specializes in producing a wide range of exotic alloy fasteners, including Hex Bolts, Hex Nuts, Allen Bolts, Plain Washers, Thread Studs, and more. We have extensive experience in working with high-performance materials such as Hastelloy C-276, C-22, B3, Incoloy 825, 925, 926, 800HT, Inconel 600, 625, X-750, 725, 718, Monel 400, 404, K500, Super Duplex 2507, Super Austenitic 904L, F44, Titanium, Nimonic 80A, GH113, GH3039, GH2032, 17-4PH, 20Cb-3, 6XN, 347H, and many others. Our hot forged fastener size range spans from M5 to M100. Our goal has always been to develop innovative, high-quality exotic alloy fasteners that are durable, time-saving, and cost-effective. We understand that customer service is just as important as product quality. Our team is dedicated to analyzing your needs and providing the best solution tailored to your requirements. We maintain a large inventory of standard products and are capable of producing custom systems at competitive prices. We believe in delivering what we promise, when we say we will. At TOMORROW, we take pride in our dependability across design, engineering, manufacturing, and service. Welcome to reach out to us anytime you feel it's appropriate. We look forward to serving you.

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