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Quality 2207 Super Duplex Stainless Steel Pipe SCC Resistance For Extreme Environments factory
Quality 2207 Super Duplex Stainless Steel Pipe SCC Resistance For Extreme Environments factory
Quality 2207 Super Duplex Stainless Steel Pipe SCC Resistance For Extreme Environments factory
Quality 2207 Super Duplex Stainless Steel Pipe SCC Resistance For Extreme Environments factory

2207 Super Duplex Stainless Steel Pipe SCC Resistance For Extreme Environments

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
Tags

Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

2207 Duplex Stainless Steel Pipe
Product Summary
2207 Stainless Steel Plate， Super Duplex Grade for Extreme Environments

Product Details

Highlight:

2207 Duplex Stainless Steel Pipe

,

Duplex Stainless Steel Pipe SCC Resistance
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

Duplex 2207 stainless steel plate is a super duplex grade characterized by a balanced austenitic-ferritic microstructure (approximately 50% austenite / 50% ferrite). This unique dual-phase structure delivers approximately twice the yield strength of standard austenitic grades like 304L or 316L, combined with exceptional resistance to chloride stress corrosion cracking (SCC), pitting, and crevice corrosion.

2207 is technically equivalent to UNS S32750 / EN 1.4410, commonly known as Super Duplex 2507. It represents the highest performance tier within the duplex stainless steel family, designed for the most demanding service environments including offshore platforms, seawater systems, chemical processing, and oil & gas exploration.

Key Features

 
 
Feature Description
Microstructure Austenitic + Ferritic (≈50/50 dual-phase)
Yield Strength ≥550 MPa (~2× stronger than 316L)
PREN ≥42 (excellent pitting resistance)
Corrosion Resistance Superior against SCC, pitting, crevice corrosion
Temperature Range -50°F to 600°F (-46°C to 316°C) continuous service
Magnetic Yes (due to ferrite phase)

Equivalent Designations

 
 
Standard Grade
ASTM UNS S32750
EN 1.4410
AISI 2207
JIS SUS329J4L
DIN X2CrNiMoN25-7-4

Specifications & Size Range

 
 
Parameter Range
Thickness 0.3 mm – 60 mm (custom up to 200 mm available)
Width 50 mm – 3500 mm
Length 1000 mm – 12000 mm (custom available)
Standard Coil Widths 1000 mm, 1219 mm, 1240 mm, 1500 mm
Standard ASTM A240 / A480, ASME SA240, EN 10088-2, JIS G4304/G4305

Surface Finishes

 
 
Finish Code Characteristics Application
No.1 Hot rolled, annealed & pickled Original industrial surface Pressure vessels, industrial equipment
2B Cold rolled, bright finish Smooth, reflective General fabrication
BA Bright annealed Mirror-like reflectivity Decorative applications
No.4 Brushed Matte, fine satin finish Architectural, food processing
HL Hairline Continuous linear streaks Building facades
8K Mirror Highly reflective Luxury finishes

Chemical Composition (UNS S32750)

 
 
Element Content (%)
Carbon (C) ≤0.030
Chromium (Cr) 24.0 – 26.0
Nickel (Ni) 6.0 – 8.0
Molybdenum (Mo) 3.0 – 5.0
Manganese (Mn) ≤1.20
Silicon (Si) ≤0.80
Nitrogen (N) 0.24 – 0.32
Copper (Cu) ≤0.50
Phosphorus (P) ≤0.035
Sulfur (S) ≤0.020
Iron (Fe) Balance

PREN (Pitting Resistance Equivalent Number) = %Cr + 3.3×%Mo + 16×%N ≥ 42

Mechanical Properties

 
 
Property Value
Tensile Strength (min) ≥795 MPa (115 ksi)
Yield Strength (0.2% offset, min) ≥550 MPa (80 ksi)
Elongation (min) 15% – 25%
Hardness (max) 310 HB / 32 HRC
Density 7.75 – 7.8 g/cm³ (0.281 lb/in³)
Modulus of Elasticity 200 GPa (29.0 × 10⁶ psi)
Melting Point 1350°C (2460°F)

Corrosion Resistance Highlights

 
 
Corrosion Type Performance
Pitting / Crevice PREN ≥42 → excellent resistance in chloride-rich environments; superior to 316L and 2205
Stress Corrosion Cracking (SCC) Highly resistant in chloride and H₂S environments; NACE MR0175 compliant
General Corrosion Superior to 304/316/317L in acids (sulfuric, formic, acetic)
Intergranular Corrosion Low carbon content prevents sensitization
Seawater Resistance Outstanding; withstands long-term exposure without significant corrosion

Processing Guidelines

Hot Working

Temperature range: 1875–2150°F (1024–1177°C), followed by rapid cooling.

Cold Working

Requires a higher forming force compared to austenitic grades due to higher strength and hardness.

Heat Treatment

  • Annealing: 1900–2100°F (1038–1149°C)

  • Hardening: Not hardenable by heat treatment; only through cold working

Welding

  • Suitable with standard methods (SMAW, GTAW, GMAW)

  • Recommended filler metal: E2594-17 for super duplex grades

  • Control heat input to maintain phase balance and prevent intermetallic precipitation

  • Post-weld annealing is recommended for stress relief in critical applications

Contact Us

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