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Quality Structural Duplex Stainless Steel Pipe UNS S32101 Lower Nickel High Strength Tubes factory
Quality Structural Duplex Stainless Steel Pipe UNS S32101 Lower Nickel High Strength Tubes factory

Structural Duplex Stainless Steel Pipe UNS S32101 Lower Nickel High Strength Tubes

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
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Duplex Stainless Steel Pipe UNS S32101
Product Summary
UNS S32101 is a lean duplex stainless steel grade that offers a balanced combination of good strength, excellent corrosion resistance, and cost-effectiveness. It belongs to the lean duplex family (also known as LDX 2101®), containing lower nickel and molybdenum than standard duplex grades like 2205, ...

Product Details

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Duplex Stainless Steel Pipe UNS S32101

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Structural Duplex Stainless Steel Pipe
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

UNS S32101 is a lean duplex stainless steel grade that offers a balanced combination of good strength, excellent corrosion resistance, and cost-effectiveness. It belongs to the lean duplex family (also known as LDX 2101®), containing lower nickel and molybdenum than standard duplex grades like 2205, making it a more economical alternative without significantly compromising performance.

Manufactured in accordance with ASTM A789 and ASTM A790, UNS S32101 tubes are available in both seamless and welded forms, suitable for a wide range of industrial applications.

Key distinction: As a lean duplex grade, S32101 offers approximately twice the yield strength of 304/316L while containing less nickel, providing better price stability and lower material cost.

Available Sizes – UNS S32101 Tubes
Parameter Range
Outer Diameter (OD) 6.0 mm – 219 mm (1/8″ – 8″)
Wall Thickness (WT) 0.5 mm – 15 mm
Length Customized (up to 12 meters or as required)
Type Seamless / Welded (cold finished)
End Finish Plain end, beveled end, threaded, or grooved

Note: For larger diameters (> 8″), refer to ASTM A790 UNS S32101 pipe.

Key Features of Duplex UNS S32101 Tubes
Feature Description
High Strength Minimum yield strength ≥ 450 MPa (65 ksi) – approximately 2x stronger than 304/316L
Good Corrosion Resistance Resistant to pitting, crevice corrosion, and stress corrosion cracking (SCC)
Low Nickel Content Only 1.35 – 1.70% Ni – reduces material cost and price volatility
Chloride Resistance Suitable for brackish water, mild seawater, and chloride-containing environments
Excellent Weldability Easy to weld with standard methods; no preheating required
Cost-Effective Lower cost than 2205, S31803, and super duplex grades
High Mechanical Properties Good impact toughness even at low temperatures
Chemical Composition (%, ASTM A789 UNS S32101)
Element UNS S32101 Requirements
Carbon (C) ≤ 0.040
Silicon (Si) ≤ 1.00
Manganese (Mn) 4.0 – 6.0
Chromium (Cr) 21.0 – 22.0
Nickel (Ni) 1.35 – 1.70
Molybdenum (Mo) 0.10 – 0.80
Nitrogen (N) 0.20 – 0.25
Copper (Cu) 0.10 – 0.80
Phosphorus (P) ≤ 0.040
Sulfur (S) ≤ 0.020
Iron (Fe) Balance

Note: Higher manganese content (4-6%) helps stabilize the austenite phase while reducing nickel content.

Mechanical Properties (Typical)
Property Value
Tensile Strength ≥ 650 MPa (94 ksi)
Yield Strength (0.2% offset) ≥ 450 MPa (65 ksi)
Elongation ≥ 25%
Hardness (HB) ≤ 290
Density 7.8 g/cm³
Pitting Resistance Equivalent Number (PREN)

PREN = %Cr + 3.3 × %Mo + 16 × %N

UNS S32101 PREN Range: 26 – 30

UNS S32101 vs Other Duplex Grades
Comparison: S32101 (Lean Duplex) vs 2205 vs 316L
Grade Type Yield Strength (MPa) PREN Nickel Content Relative Cost Best For
316L Austenitic ≥ 170 24 – 26 10 – 14% Medium Mild corrosive environments
UNS S32101 Lean Duplex ≥ 450 26 – 30 1.35 – 1.70% Low General industrial, structural, brackish water
2205 / S31803 Standard Duplex ≥ 450 30 – 38 4.5 – 6.5% Medium-High Chemical, marine, oil & gas

Why choose S32101?

  • Lower cost – Due to reduced nickel and molybdenum content

  • Price stability – Less exposure to nickel price fluctuations

  • High strength – Same yield strength as 2205 at lower cost

  • Good weldability – No preheating, easier fabrication

Applicable Standards
Standard Description
ASTM A789 Seamless and welded ferritic/austenitic stainless steel tubing
ASTM A790 Seamless and welded ferritic/austenitic stainless steel pipe
ASME SA789 / SA790 Boiler and pressure vessel code
EN 10216-5 European standard for duplex steel tubes
EN 10217-7 Welded duplex steel tubes
NACE MR0175 / ISO 15156 Suitable for sour service (limited applications)
Key Applications for Duplex UNS S32101 Tubes
Industry Typical Applications
Structural & Construction Bridge components, building frameworks, handrails, and support structures
Marine & Coastal Seawater cooling piping, jetty structures, and brackish water systems
Chemical Processing Storage tanks, process piping for mild chemical environments
Water Treatment Desalination plants (low-pressure), water distribution, and wastewater treatment
Paper & Pulp Pulp storage tanks and mild process environments
Food & Beverage Food processing equipment, tanks, and piping
Transportation Tank containers, cargo tanks for chemical transport
Cement & Mining Screening equipment, conveyor systems, and structural supports
Advantages of Choosing UNS S32101 Lean Duplex Tubes
Advantage Explanation
Lower Material Cost Reduced nickel (1.35-1.70%) vs 2205 (4.5-6.5%) saves 20-30% on material cost
Price Stability Less affected by nickel market volatility
High Strength Twice the strength of 304/316L allows for thinner walls and lighter structures
Good Corrosion Resistance PREN 26-30 is suitable for many industrial environments
Easy Fabrication Good formability and weldability without preheating
Wide Availability Readily available in tubes, pipes, sheets, and bars
Request a Quote for Duplex UNS S32101 Tubes

Please provide your required size (OD × WT), quantity, length, and delivery port. Our team will reply within 24 hours with a competitive price and technical datasheet.

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