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Introduction
Chemical Composition
Mechanical Properties
Other Designations
Manufacturing Process
Applications
Stainless steel grade Duplex 2304 is a duplex stainless steel type with a structure that is a balance of ferritic and austenitic. It has high strength and toughness, resistance to stress corrosion cracking, high thermal conductivity, low thermal expansion, and easy fabrication. It is recommended that this steel is not used in areas where the steel would be exposes to temperatures over 1058°C (570°F) for prolonged periods.
The following datasheet provides an overview of stainless steel grade Duplex 2304.
The chemical composition of stainless steel grade Duplex 2304 is outlined in the following table.
Element Content (%) Iron, Fe 72.679 Chromium, Cr 23 Nickel, Ni 4 Molybdenum, Mo 0.20 Nitrogen, N 0.1 Carbon, C 0.02 Sulfur, S 0.001The mechanical properties of stainless steel grade Duplex 2304 are displayed in the following table.
Properties Metric Imperial Tensile strength ≥ 600 MPa ≥ 87000 psi Yield strength (@strain 0.200 %) ≥ 400 MPa ≥ 58000 psi Modulus of elasticity 200 GPa 29000 ksi Shear modulus (@temperature 20°C/ 68°F) 75.0 GPa 10900 ksi Poisson’s ratio 0.333 0.333 Elongation at break ≥ 25 % ≥ 25 % Hardness, Rockwell C ≤ 20.0 ≤ 20.0 Hardness, Brinell 180 - 230 180 - 230Let us source quotes for you for X-Ray Fluorescence Analyzers, Optical Emission Spectrometers, Atomic Absorption Spectrometers or any other analysis instrument you are looking for.
Request a Quote HereEquivalent materials to stainless steel grade Duplex 2304 are given below:
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Machining of stainless steel grade Duplex 2304 is performed at low speeds, and constant feeds help to reduce its tendency to work harden. This material is tougher than grade 304 and 316 stainless steels due to its long stringy chip. Chip breakers are recommended. Unlike the 300 series stainless steel, Duplex 2304 steel requires more pressure while performing forming due to its higher yield strength. Its low ductility characteristic tends to make it difficult to perform forming operations.
Welding can be performed using most of the traditional methods such as gas–tungsten arc welding (GTAW), submerged arc welding (SAW), and gas–metal arc welding (GMAW). The filler metal should be a balanced of ferrite/ austenite type like 2205 or 2304.
Hot working can be done after heating the material to 954-1093°C (1750-2000°F), which is followed rapid cooling. Annealing after working is recommended. For annealing, the material is heated to 930-1050°C (1710-1920°F) and then rapidly quenched.
Stainless steel grade Duplex 2304 is used by various industries including pulp and paper, coal handling, potash, food and beverage, and waste water.
The specific applications are as follows:
The longitudinal stainless steel pipe is different from the ordinary welded pipe welding process. Longitudinal welded stainless steel pipes are made by bending and welding wide steel plates and most commonly used in oil and gas industry applications. A longitudinal welded stainless steel pipes is manufactured with advance techniques using high quality material as per the industry norms.
The terms pipes and tubes are often used interchangeably, but there are quite a few differences between pipe and tube: 1. Pipes are generally measured by the inside diameter, often called the “nominal” diameter ( ASME/ANSI B 36.10 Welded and Seamless Wrought Steel Pipe), and a “schedule”, which refers to the wall thickness. Where as tube measurements are always done by outside diameters and wall thickness. The thickness of a tubes is often specified as gauge (18 SWG, 16 SWG etc.) 2. Pipes are generally used for process pipe lines for movement of fluids, gases, or air, whereas tubes are used for heat exchanger & fired heater & in instrument connection. 3. Up to 12” NPS pipe outside diameter of the pipe is more than 12” and above 12”, it is same as pipe size. Whereas for the tube outside diameter is always equal to the size of the tube. 4. Pipes are generally available in sizes from 1/8" to 80", but tubes are generally considered for high pressure applications and are smaller in sizes, may be upto 8".
What is the Difference Between Welded & Seamless Pipe?Stainless steel pipes are available in a wide range of sizes, materials, lengths, and origins. Before purchasing and designing for a piping system, one of the key factors that must be considered is the type of pipe : Seamless or Welded.
1. Manufacturing Process : Seamless steel pipe is manufactured by the round steel billet, through hot rolling, cold rolling or cold drawn processes, no seam on the pipe body. Welded steel pipe is manufactured by flat steel strip, with welding seam on the pipe body. Welded pipes include ERW pipe, LSAW pipe, and SSAW pipe.
2. Price : Welded steel pipes are typically much cheaper than seamless pipes and tubes.
3. Pressure Rating : Although there is no clear evidence regarding the difference in pressure rating, but generally seamless pipes are considered to be more suitable for high pressure applications.
4. Thin Wall thickness: It is generally suitable and economical to produce thin walled welded pipes as compared to seamless pipes. Large diameter seamless pipes, cannot be produced with thin wall thickness, but welded pipes can be produced with light wall thickness.
5. Thick Wall thickness: It is preferred to have high wall thickness pipes in seamless type, especially in case of smaller sizes. It is generally not feasible to produce welded pipes in smaller sizes with high wall thickness.
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