A335P92 alloy seamless steel pipe, specification 48.3*7.14 (i.e. outer diameter 48.3mm, wall thickness 7.14mm), as a high pressure boiler pipe, its implementation standard is ASTM A335M. The following is a detailed analysis of the steel pipe:
I. Basic overview of Steel Boiler Tubes
A335P92 alloy seamless steel pipe is a kind of high quality high temperature and high pressure alloy seamless steel pipe, which is widely used in high temperature and high pressure environment such as the main steam pipeline and reheated steam pipeline of thermal power plants. Its material is P92, belonging to the United States steel number ASTM A335 P92 martensitic heat-resistant steel.
Second, chemical composition of Steel Boiler Tubes
A335P92 alloy seamless steel pipe chemical composition is precisely controlled, mainly including carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, vanadium, nitrogen, nickel, aluminum, niobium, tungsten and boron and other elements. The specific content range is as follows:
Carbon (C) : 0.07~0.13%
Manganese (Mn) : 0.30-0.60%
Phosphorus (P) : ≤0.020%
Sulfur (S) : ≤0.010%
Silicon (Si) : ≤0.50%
Chromium (Cr) : 8.5~9.50%
Molybdenum (Mo) : 0.30~0.60% (but it is worth noting that compared with SA-335P91 steel, SA-335P92 steel appropriately reduces the content of Mo element, and improves the performance of the material by adding a certain amount of W)
Vanadium (V) : 0.15~0.25%
Nitrogen (N) : 0.03~0.07%
Nickel (Ni) : ≤0.40%
Aluminum (Al) : ≤0.04%
Niobium (Nb) : ≤0.040~0.09%
Tungsten (W) : 1.5~2.0%
Boron (B) : 0.001~0.006%
The reasonable proportion of these elements makes the A335P92 alloy seamless steel pipe have excellent high temperature corrosion resistance, oxidation resistance, high temperature strength and creep properties.
3. Mechanical properties of Steel Boiler Tubes
A335P92 alloy seamless steel pipe has excellent mechanical properties, which are shown as follows:
Tensile strength: ≥620MPa
Yield strength: ≥440MP
These mechanical properties ensure the safety and reliability of steel tubes in high temperature and high pressure environments.
4. Application field of Steel Boiler Tubes
A335P92 alloy seamless steel pipe due to its excellent performance characteristics, is widely used in the following fields:
Thermal power plant: as a key material for the main steam pipeline and reheated steam pipeline, it can withstand high temperature and high pressure environment to ensure the safe operation of the power plant.
Petrochemical: In the process of petroleum refining and chemical production, it is used to manufacture equipment such as reactors, heat exchangers and transmission pipelines to meet the requirements of high temperature and pressure and corrosion resistance.
Nuclear energy industry: In nuclear power plants, used to manufacture nuclear reactor cooling systems and related pipelines to ensure the safety and stability of nuclear power generation.
5. Implementation standards and ordering instructions of Steel Boiler Tubes
The A335P92 alloy seamless steel pipe complies with the ASTM A335/A335M executive standard. When ordering, the following information needs to be clear:
Quantity (e.g. in feet, meters, or roots)
Material name (seamless alloy steel nominal pipe)
Class (P92)
Manufacturing method (hot finishing or cold drawing)
Specifications (e.g. outside diameter, wall thickness, etc.)
Length (divided size and variable size)
End machining
Selection requirements (e.g. water pressure and allowable weight deviation)
Required test report
Standard number
Special requirements or any optional supplementary requirements
In summary, A335P92 alloy seamless steel pipe is a high-quality high temperature and high pressure alloy seamless steel pipe, which is widely used in many fields with its excellent performance characteristics. When ordering and using, it is necessary to strictly comply with the relevant standards and requirements to ensure its safety and reliability.
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Post time: Jul-16-2024