Molybdenum Alloy Stainless Steel Pipe Chloride Resistance For Marine Chemical Applications

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel,TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T,D/P,D/A,Western Union,PayPal
Supply Ability: 10000tons
Product Summary
The Molybdenum Alloy Stainless Steel Pipe contains molybdenum as a key alloying element, which significantly enhances corrosion resistance, particularly against pitting and crevice corrosion in chloride-rich environments. This pipe offers superior performance in aggressive media such as seawater, ...

Product Details

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Molybdenum Alloy Stainless Steel Pipe

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Stainless Steel Pipe Chloride Resistance

Product Description

The Molybdenum Alloy Stainless Steel Pipe contains molybdenum as a key alloying element, which significantly enhances corrosion resistance, particularly against pitting and crevice corrosion in chloride-rich environments. This pipe offers superior performance in aggressive media such as seawater, acidic solutions, and high-temperature industrial fluids. With excellent mechanical strength and weldability, it is the preferred choice for demanding applications where standard stainless steel grades may fail.

Product Specifications
Parameter Details
Standards ASTM A312, A269, A213; EN 10216-5; ASME SA312
Available Grades 316, 316L, 317, 317L, 904L, Duplex 2205, Alloy 825
Outer Diameter 6 mm – 630 mm
Wall Thickness 0.5 mm – 30 mm
Length Fixed lengths 3m / 6m, or custom lengths upon request
Manufacturing Process Seamless – Cold drawn / Hot rolled
Surface Finish Annealed, pickled, polished, bright annealed
Chemical Composition
Grade C ≤ Si ≤ Mn ≤ P ≤ S ≤ Cr Ni Mo
316 0.08 0.75 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0
316L 0.03 0.75 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0
317L 0.03 0.75 2.00 0.045 0.030 18.0-20.0 11.0-15.0 3.0-4.0
904L 0.02 1.00 2.00 0.045 0.035 19.0-23.0 23.0-28.0 4.0-5.0

Molybdenum content is the key differentiator, providing enhanced chloride resistance.

Mechanical Properties
Grade Condition Tensile Strength (MPa) min Yield Strength (MPa) min Elongation (%) min Hardness (HB) max
316 / 316L Annealed 515 / 485 205 / 170 40 / 40 217 / 217
317L Annealed 515 205 40 217
904L Annealed 490 215 35 220

Tested in accordance with ASTM E8 / E8M.

Key Advantages of Molybdenum Alloy
  • Superior Pitting Resistance Equivalent Number (PREN) – Higher molybdenum content increases resistance to localized corrosion
  • Excellent Performance in Chloride Environments – Ideal for seawater, brine, and de-icing salt applications
  • Enhanced Crevice Corrosion Resistance – Critical for flange gaskets, threaded connections, and lap joints
  • Good High-Temperature Strength – Retains mechanical properties at elevated temperatures
  • Improved Weldability – Low carbon versions (L grades) prevent intergranular corrosion after welding
Applications
  • Marine and Offshore – Seawater cooling lines, shipbuilding, offshore platforms
  • Chemical Processing – Heat exchangers, pressure vessels, reactor lines
  • Oil and Gas – Sour gas service, downhole tubing, flow lines
  • Desalination Plants – High-pressure brine piping
  • Pulp and Paper – Bleaching plant equipment
  • Pharmaceutical and Food – Sanitary process lines requiring high purity
  • Pollution Control – Flue gas desulfurization (FGD) systems
Contact Us

For inquiries, technical datasheets, or custom sizes, please contact our sales team.

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