Table of Contents
- Duplex Steel S32205 Overview
- Technical Specifications
- Chemical Composition & Mechanical Properties
- Types of UNS S32205 Hex Bars
- Key Advantages of Duplex Steel S32205 Hex Bars
- Key Applications of Duplex Steel S32205 Hex Bars
- Quality Assurance & Inspection
- Global Export Markets
- Frequently Asked Questions
- Contact Aurum Overseas
Duplex Steel S32205 Overview
Aurum Overseas is a premier Duplex Steel S32205 Hex Bars Supplier delivering optimized 22% chromium nitrogen-enhanced dual-phase bar stock. Our UNS S32205 Hex Bars feature tightened chemical limits over standard S31803, ensuring high PREN (≥35) and outstanding resistance to pitting and crevice corrosion.
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As a trusted Duplex Steel S32205 Hex Bars Exporter, we supply precision-machined UNS S32205 Bright Hex Bars for CNC-machined shafting alongside heavy UNS S32205 Forged Hex Bars for high-load pressure retaining hardware. Every order includes solution-annealed bar stock, EN 10204 3.1 mill test certificates, and custom cut-to-length sawing.
We export certified duplex hex bars directly to oil and gas extraction sites, marine processing facilities, paper mills, and chemical refineries across the USA, Germany, UK, UAE, Saudi Arabia, and global markets.
Technical Specifications
| Technical Parameter | Specification Standard |
|---|---|
| Material Specifications | ASTM A276, ASTM A479, ASME SA276, ASME SA479, EN 10088-3 |
| UNS Designation | UNS S32205 |
| Werkstoff Number | W.Nr. 1.4462 |
| EN Designation | X2CrNiMoN22-5-3 |
| Across-Flats (AF) Size Range | 6.0 mm to 100.0 mm (1/4" to 4" Hexagon) |
| Length Options | 1,000 mm to 6,000 mm, Precision Sawing Cut-to-Length |
| Surface Finishes | Cold Drawn, Centerless Ground, Bright Annealed, Hot Forged, Rough Machined |
| Heat Treatment Condition | Solution Annealed (1020 °C to 1100 °C, Rapid Water Quench) |
| Dimensional Tolerances | ASTM A484 / ISO 286-2 (h9, h10, h11 hex profile tolerances) |
Chemical Composition & Mechanical Properties
Equivalent Standards
| Standard / Grade | Werkstoff Nr. | UNS Designation | EN Symbol | Common Name |
|---|---|---|---|---|
| Duplex Steel S32205 | 1.4462 | S32205 | X2CrNiMoN22-5-3 | Duplex 2205 |
Chemical Composition (%)
| Element | Specification Range (UNS S32205) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.030 max |
| Sulfur (S) | 0.020 max |
| Chromium (Cr) | 22.0 – 23.0 |
| Molybdenum (Mo) | 3.0 – 3.5 |
| Nickel (Ni) | 4.50 – 6.50 |
| Nitrogen (N) | 0.14 – 0.20 |
| Iron (Fe) | 63.54 min |
Mechanical & Physical Properties
| Property Parameter | Value (Metric / Imperial) |
|---|---|
| Density | 7.805 g/cm³ (0.285 lb/in³) |
| Melting Point | 1420 – 1465 °C (2588 – 2669 °F) |
| Tensile Strength (Min) | 620 MPa (90,000 Psi) |
| Yield Strength (0.2% Offset, Min) | 450 MPa (65,000 Psi) |
| Elongation (Min) | 25 % |
| Hardness (Max) | 290 HBW / 31 HRC |
Types of UNS S32205 Hex Bars
Aurum Overseas supplies Duplex Steel S32205 hex bars in precision bright and heavy forged conditions for aggressive chloride and high-load environments.
UNS S32205 Bright Hex Bars
UNS S32205 Forged Hex Bars
Key Advantages of Duplex Steel S32205 Hex Bars
Guaranteed Pitting Resistance (PREN ≥ 35)
Higher minimum chromium, molybdenum, and nitrogen levels maximize localized pitting protection in aggressive chloride environments.
High Structural Load Capacity
High yield strength allows engineers to downsize bolt and shafting diameters without compromising structural integrity or pressure ratings.
Stress Corrosion Cracking Resistance
Dual-phase ferrite-austenite matrix prevents catastrophic transgranular cracking under combined stress and chloride exposure.
Tight Machining Tolerances
Precision cold-drawn across-flats dimensions ensure seamless compatibility with high-speed automated CNC lathes for fastener manufacturing.
Key Applications of Duplex Steel S32205 Hex Bars
| Industry | Applications | Operational Benefit |
|---|---|---|
| Offshore Oil & Gas | Wellhead Christmas trees, subsea valve drive shafts, high-pressure hex bolts | UNS S32205 Hex Bars: Exceptional yield strength and resistance to sour gas cracking. |
| Pulp & Paper Processing | Digester liquor system fittings, bleach washer shafts, tie rods | UNS S32205 Bright Hex Bars: Superior erosion and corrosion resistance in chlorinated bleach systems. |
| Chemical Refining | Organic acid heat exchanger plugs, pump shafts, structural couplings | UNS S32205 Forged Hex Bars: High fatigue resistance under cyclic thermal and pressure loads. |
| Desalination Systems | High-pressure reverse osmosis pumps, brine intake header fasteners | UNS S32205 Hex Bars: Prevents crevice corrosion under stagnant high-salinity seawater conditions. |
Quality Assurance & Inspection
As a leading Duplex Steel S32205 Hex Bars Exporter, every heat is thoroughly tested to verify phase balance, mechanical integrity, and compliance with NACE MR0175/ISO 15156 standards:
- Spectro Chemical Analysis: Positive Material Identification (PMI) confirming controlled Cr, Mo, Ni, and N chemistry.
- Phase Ratio Analysis: Quantitative metallography per ASTM E562 ensuring a balanced 40–60% ferrite phase ratio.
- Corrosion Performance Testing: Ferric chloride pitting test per ASTM G48 Method A to verify PREN compliance.
- Ultrasonic Examination: NDT inspection per ASTM A388 on forged hex bars to verify internal structural soundness.
Global Export Markets
As an established Duplex Steel S32205 Hex Bars Exporter, Aurum Overseas supplies fully certified UNS S32205 Hex Bars to global oil & gas, pulp & paper, and desalination centers:
USA
Canada
Mexico
Germany
United Kingdom
France
Italy
Netherlands
Belgium
Spain
Poland
UAE
Saudi Arabia
Qatar
Kuwait
Oman
Bahrain
Frequently Asked Questions
UNS S32205 specifies narrower, higher minimum limits for Chromium (22.0%), Molybdenum (3.0%), and Nitrogen (0.14%), ensuring consistent PREN values above 35 and superior corrosion performance.
Hex bars feature flat parallel sides that eliminate additional machining steps when fabricating high-torque bolts, hex plugs, valve stems, and pipe couplings.
UNS S32205 hex bars are manufactured in strict compliance with ASTM A276 and ASTM A479 standards for structural and pressure-retaining applications.
No, duplex stainless steels cannot be hardened by heat treatment; their high mechanical strength is achieved through cold working and solution annealing.
All orders from Aurum Overseas include full EN 10204 3.1 Mill Test Certificates detailing heat numbers, chemical composition, mechanical test results, and corrosion test reports.
Contact Aurum Overseas
Partner with a trusted Duplex Steel S32205 Hex Bars Supplier and Duplex Steel S32205 Hex Bars Exporter for certified stock, custom sawing, and reliable global delivery.