2205 Duplex Stainless Steel Pipe, S32760 Seamless Pipe, Wholesale 2507 Stainless Steel Pipe, Full Range of Specifications
Chemical composition of 2507 stainless steel:
C≤0.03 、Si≤0.80 、Mn≤1.2 、Cr:24-26 、Ni:6-8 、S≤0.02 、P≤0.035 、Mo:3-5 、N：0.24-0.32
2507 stainless steel, after suitable solution heat treatment, exhibits a microstructure with an ideal α/γ ratio of approximately 50/50 in a two-phase structure. As the solution temperature exceeds 1050°C, the amount of ferrite phase in the steel increases with temperature; however, due to the high nitrogen content, the phase proportions of the steel do not change significantly below 1300°C. If this steel is not aged at different temperatures (or affected by heat), γ2 phase formation and intermetallic phases such as δ, χ, R, α', and oxides like Cr2N may precipitate on the α+γ matrix. Due to the low carbon content in the steel (generally 0.01%-0.02%), carbides are usually not present in the steel.
Mechanical properties of 2507 stainless steel products:
I. Room temperature mechanical properties of 2507 dual-phase stainless steel pipe:
Steel Grades: Wall thickness ≤ 20mm; δb/MPa: 800-1000, δ0.2/MPa: ≥550, δ5/%: ≥25, Hardness (HV): 290
Section 2: Mechanical properties of 2507 dual-phase stainless steel sheet at room temperature to -200°C:
Steel grades / Temperature /℃ δb/MPa
Room Temperature ≥ 530
Lumber 100 ≥ 450
200 ≥400
2205 duplex stainless steel tubing boasts excellent mechanical properties, corrosion resistance, and good weldability, finding applications in industries such as oil and gas, marine engineering, and chemical manufacturing. The length of oil and gas pipelines laid using duplex stainless steel materials in the oil and gas industry has exceeded 850 km, with the majority being 2205 duplex stainless steel seamless tubes (some are also S31803 duplex stainless steel tubes and 2507 duplex stainless steel tubes); for the West-to-East Natural Gas Transmission Project, due to the strong corrosiveness of the natural gas medium, all high-pressure pipelines are made of 2205 duplex stainless steel.
