1 1

StockSteel

Stainless Steel Pipes | High-Strength 2507/2205 Alloy Tubes

Stainless Steel Pipes | High-Strength 2507/2205 Alloy Tubes

$1,320.00 SGD
$1,320.00 SGD
Sale Sold out
Taxes included. Shipping calculated at checkout.
Quantity
Thickness

Stainless Steel Pipes | High-Strength 2507/2205 Alloy Tubes

Product Specifications

Structured for precision and performance, our stainless steel pipes meet global standards for industrial and commercial applications.

Property 2507 Duplex 2205 Duplex 304/316 Austenitic
Outer Diameter (mm) 6–860 6–860 6–530
Wall Thickness (mm) 0.5–60 0.5–60 0.5–45
Hardness (HV) 290–320 270–310 150–220
Tensile Strength (MPa) 800–1000 620–820 515–720
Yield Strength (MPa) 550–600 450–550 205–310
Elongation (%) 15–25 20–25 35–45
Surface Finish Pickled, Polished, Annealed Pickled, Polished, Annealed 2B, BA, Mirror Polished
Standards ASTM A789, A790, EN 10216 ASTM A789, A790, EN 10216 ASTM A312, A269, A511

Key Attributes

  1. Material Composition

    • 2507 Duplex: 24–26% Chromium, 6–8% Nickel, 3–5% Molybdenum, 0.24–0.35% Nitrogen.
    • 2205 Duplex: 22–23% Chromium, 4.5–6.5% Nickel, 3–3.5% Molybdenum.
    • Superior resistance to chloride-induced stress corrosion cracking compared to austenitic grades.

  2. Applications

    • stainless steel exhaust flex pipe: Ideal for high-temperature exhaust systems due to oxidation resistance (up to 600°C).
    • stainless steel bulkhead pipe fitting: Used in marine and chemical processing for structural integrity in corrosive environments.
    • Custom solutions for oil/gas pipelines, heat exchangers, and stainless steel pipe diameters ranging from 6mm to 2.5 meters.

  3. Manufacturing Process

    • Seamless pipes: Hot extrusion or cold drawing for precision dimensions.
    • Welded pipes: High-frequency induction welding (HFIW) for uniform strength.
    • Post-weld heat treatment (PWHT) and pickling to enhance corrosion resistance.

Technical Performance

Tensile Strength

Our 2507 duplex stainless steel pipes achieve tensile strengths up to 1,000 MPa, outperforming standard 316L (520 MPa) and carbon steel. This ensures reliability in high-pressure systems like hydraulic pipelines and offshore platforms.

 

Bend Strength

The duplex microstructure (50% ferrite, 50% austenite) provides exceptional bend strength. For example, 2205 pipes withstand bending radii up to 1.5× pipe diameter without cracking.

 

Weight Calculation Formula

Calculate pipe weight (kg/m) using:

Example: A 50mm OD, 3mm WT 2205 pipe weighs 3.5 kg/m.

 

Identification Marking

Pipes are laser-etched with:

  • Grade (e.g., UNS S32205/S32750)
  • Standard (ASTM/EN)
  • Heat number
  • Size (e.g., stainless steel pipe diameters 25mm × 3mm).

Why Does Stainless Steel Rust?

While stainless steel is corrosion-resistant, improper handling or environmental factors can cause localized rust:

  1. Chromium Depletion: Damage to the passive oxide layer (Cr₂O₃) exposes iron to oxygen.
  2. Chloride Exposure: Coastal or de-icing salt environments accelerate pitting in grades like 304.
  3. Galvanic Corrosion: Contact with dissimilar metals (e.g., carbon steel) creates electrochemical reactions.
  4. High-Temperature Oxidation: Prolonged exposure above 800°C degrades 304/316 alloys.

Prevention Tips:

  • Regular cleaning with pH-neutral detergents.
  • Use passivation treatments for welded joints.
  • Select duplex grades (2507/2205) for chloride-rich environments.

Why Choose Our Stainless Steel Pipes?

  1. Certified Quality: ASTM, EN, and ISO 9001 compliance.
  2. Custom Solutions: Tailored stainless steel pipe diameters, thicknesses, and bends.
  3. Global Logistics: Warehouses in Wuxi, Shanghai, and Rotterdam ensure fast delivery.
  4. Technical Support: 24/7 engineering assistance for stainless steel bulkhead pipe fitting installations.
View full details