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Duplex 2205 is a nitrogen-enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels. Duplex ? describes a family of stainless steels that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless. The structure of 2205 duplex stainless steel consists of austenite pools surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. Often referred to as the work horse grade, 2205 is the most widely used grade in the duplex family of stainless steels The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy (stress corrosion cracking resistance and high strength) with those of an austenitic alloy (ease of fabrication and corrosion resistance). Usage of 2205 Duplex stainless steel should be limited to temperatures below 600 F. Extended elevated temperature exposure can embrittle 2205 stainless.

Duplex 2507 is a super duplex stainless steel designed for applications which demand exceptional strength and corrosion resistance. Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking. Usage of Duplex 2507 should be limited to applications below 600�?�° F (316�?�° C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507. Duplex 2507 possesses excellent mechanical properties. Often a light gauge of 2507 material can be used to achieve the same design strength of a thicker nickel alloy. The resulting savings in weight can dramatically reduce the overall cost of fabrication. The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy (stress corrosion cracking resistance and high strength) with those of an austenitic alloy (ease of fabrication and corrosion resistance). Usage of 2205 Duplex stainless steel should be limited to temperatures below 600 F. Extended elevated temperature exposure can embrittle 2205 stainless

321 stainless steel is an austenitic stainless steel that contains titanium as a stabilizing element. This element helps to prevent chromium carbide precipitation, which can occur during high-temperature service, making it ideal for use in high-temperature applications. Some of the key properties of 321 stainless steel include: High-temperature resistance: 321 can withstand high temperatures up to 870�°C (1600�°F) without losing its strength or corrosion resistance properties, making it ideal for use in applications such as furnace parts and exhaust systems. Corrosion resistance: 321 offers excellent resistance to corrosion, including aqueous corrosion and stress corrosion cracking. Strength and toughness: 321 has good strength and toughness, making it suitable for use in demanding applications. Fabricability: 321 is easily formable using standard methods, and can be welded using common welding techniques. Some of the common applications for 321 stainless steel include: Exhaust systems in automobiles, aircraft, and industrial equipment High-temperature furnace parts, such as burners and heating elements Chemical processing equipment Jet engine parts Heat exchangers Overall, 321 stainless steel is a highly reliable and versatile material that is well-suited for use in high-temperature applications where superior corrosion resistance and strength are required. The following are some of the commonly used international standards for 321 stainless steel: ASTM A240/A240M: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications ASTM A276/A276M: Standard Specification for Stainless Steel Bars and Shapes EN 10088-2: Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes EN 10095: Heat resisting steels and nickel alloys JIS G4304: Hot-rolled stainless steel plate, sheet and strip JIS G4305: Cold-rolled stainless steel plate, sheet and strip GB/T 4237: Hot rolled stainless steel plate, sheet and strip GB/T 3280: Cold rolled stainless steel plate, sheet and strip We can provide the following form:321 stainless steel coil; 321 stainless stee strip;321 stainless stee plate; 321 stainless steel sheets; 321 stainless steel tubes; 321 stainless steel pipe; 321 stainless steel flat; 321 stainless steel bar Applied to open-air machines, heat-resistant parts of building materials and parts with difficulty in heat treatment in chemical, coal and petroleum industries that require high resistance to intergranular corrosion 1. Petroleum waste gas combustion pipeline 2. Engine exhaust pipe 3. Boiler shell, heat exchanger, heating furnace parts 4. Silencer parts for diesel engines 5. Boiler pressure vessel 6. Chemical transport vehicle 7. Expansion joints 8. Spiral welded pipes for furnace pipes and dryers

444 stainless steel is a low-carbon, dual-stabilized ferritic stainless steel that is highly resistant to corrosion, especially in chloride environments. It is often used in applications where high corrosion resistance and good formability are required. Some of the key properties of 444 stainless steel include: Corrosion resistance: 444 stainless steel has excellent resistance to corrosion, especially in chloride environments such as seawater, brackish water, and chloride-containing acids and solvents. Heat resistance: It can withstand high temperatures up to 950�°C (1742�°F) without losing its strength or corrosion resistance properties. Formability: It has good formability and can be easily fabricated into various shapes and sizes. Weldability: It can be welded using common welding techniques, and does not require preheating or post-weld heat treatment. Cost-effective: Compared to other stainless steels, 444 stainless steel is a cost-effective option due to its lower nickel content. Some of the common applications for 444 stainless steel include: Automotive exhaust systems: It is often used in the manufacture of automotive exhaust systems due to its excellent corrosion resistance and heat resistance. Industrial equipment: It is also used in various industrial equipment such as heat exchangers, tanks, and piping systems. Kitchen appliances: It is used in the manufacture of kitchen appliances such as refrigerators, dishwashers, and ovens due to its good formability and corrosion resistance. Overall, 444 stainless steel is a highly versatile and cost-effective material that is ideal for use in corrosive environments where high corrosion resistance and good formability are required. Here are some of the most common international standards for 444 stainless steel: ASTM A240/A240M: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications ASTM A268/A268M: Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service ASTM A554: Standard Specification for Welded Stainless Steel Mechanical Tubing EN 10088-2: Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes JIS G4305: Cold-rolled stainless steel plate, sheet and strip GB/T 3280: Cold rolled stainless steel plate, sheet and strip We can provide the following of the form:444 stainless steel coil; 444 stainless stee strip;444 stainless stee plate; 444 stainless steel sheets; 444 stainless steel tubes; 444 stainless steel pipe;444 stainless steel flat; 444 stainless steel bar 444 stainless steel is generally used to manufacture stress corrosion resistant equipment, video machinery, automotive engine exhaust pipe storage tanks, solar water heaters, printing and dyeing machinery, heat exchangers, etc.