Duplex S32205 Round Bars Supplier | UNS S32205 2205 Duplex Steel Bar
Duplex S32205 Round Bars Manufacturer and Supplier
S32205 Duplex Round Bars are known as high tensile strength alloys with very high resistance to corrosion and high physical properties. It has a two-phase structure consisting of austenite and ferrite, which makes it resistant to corrosion from pitting, crevice, and chloride stress. These bars have an approximate chemical composition of 22% chromium, 5%–6% nickel, and 3% molybdenum. These round bars are popularly supplied to oil & gas, petrochemical, marine and chemical processing industries. Stellar Alloys Steel Pipes and Tubes is an excellent supplier and manufacturer of premium quality Duplex S32205 Round Bars, which are produced with exacting dimensions, strict quality control and reliable performance in demanding industrial applications.
Table of Contents
- Specification Tables of Duplex S32205 Round Bars
- Chemical Composition Tables of Duplex S32205 Round Bars
- Mechanical Properties of Duplex S32205 Round Bars
- Equivalent Grades of Duplex S32205 Round Bars
- Types of Duplex S32205 Round Bars
- S32205 vs S31803 Comparison Table
- Weight Chart of Duplex S32205 Round Bars
- Size Chart of Duplex S32205 Round Bars
- Applicational Industries of Duplex S32205 Round Bars
- Related Products
- Frequently Asked Questions
Specification Tables of Duplex S32205 Round Bars
Parameter | Details |
Grade | UNS S32205 / Duplex 2205 |
Standards | ASTM A276, ASTM A479 |
Size Range | 3 mm – 500 mm |
Length | 1000 – 6000 mm |
Tolerance | As per ASTM A276 |
Heat Treatment | Solution Annealed: 1020–1100°C, rapid quench |
Ferrite Content | 40–60 FN (ASTM A923 Method A) |
NACE Compliance | Max 36 HRC / 310 HB (ISO 15156 / MR0175) |
Testing | ASTM A923 (A/B/C) available on request |
Chemical Composition Tables of Duplex S32205 Round Bars
| Element | Symbol | Min (%) | Max (%) |
| Chromium | Cr | 22.00 | 23.00 |
| Nickel | Ni | 4.50 | 6.50 |
| Molybdenum | Mo | 3.00 | 3.50 |
| Nitrogen | N | 0.14 | 0.20 |
| Carbon | C | — | 0.030 |
| Manganese | Mn | — | 2.00 |
| Silicon | Si | — | 1.00 |
| Phosphorus | P | — | 0.030 |
| Sulfur | S | — | 0.020 |
| Iron | Fe | Balance | Balance |
Mechanical Properties of Duplex S32205 Round Bars
Property | Value | Standard Reference |
Tensile Strength | 655 MPa min | ASTM A276 Table 2 |
Yield Strength | 450 MPa min | ASTM A276 Table 2 |
Elongation | 25% min | ASTM A276 |
Hardness | 293 HB max | ASTM A479 S1 (when specified) |
PREN | Typically ≥35 (from MTC) | Calculated value |
Equivalent Grades of Duplex S32205 Round Bars
| Standard | UNS Designation | Werkstoff Nr. (W.Nr.) | EN Standard |
| Duplex 2205 | S32205 / S31803 | 1.4462 | X2CrNiMoN22-5-3 |
Types of Duplex S32205 Round Bars
EN31 Round Bars
EN31 Round Bars
S32205 vs S31803 Comparison Table
| Diameter | Weight (kg/m) |
| 10 mm | 0.612 |
| 25 mm | 3.827 |
| 50 mm | 15.31 |
| 100 mm | 61.26 |
Weight Chart of Duplex S32205 Round Bars
Diameter | Weight (kg/m) |
10 mm | 0.612 |
25 mm | 3.827 |
50 mm | 15.31 |
100 mm | 61.26 |
Size Chart of Duplex S32205 Round Bars
Diameter (mm) | Length (mm) | Condition |
6, 8, 10, 12, 16, 20 | 1000–6000 | Annealed |
25, 32, 40, 50 | 1000–6000 | Annealed |
63, 75, 100 | 1000–6000 | Annealed |
125–500 | Mill supply | Annealed |
Applicational Industries of Duplex S32205 Round Bars
- Oil & Gas Industry
- Petrochemical Industry
- Chemical Processing Industry
- Marine Industry
- Offshore Engineering Industry
- Power Generation Industry
- Desalination Industry
- Pulp & Paper Industry
- Food Processing Industry
- Pharmaceutical Industry
Our stainless steel round bars serve mission-critical applications across multiple industries due to their exceptional strength, corrosion resistance, and reliability in harsh environments:
Common applications include:
- Oil and Gas Industry – Downhole pump shafts, valve stems, instrumentation components, and wellhead equipment
- Chemical Processing Plants – Reactor vessel shafts, agitator components, pump impellers, and corrosion-resistant fasteners
- Marine and Offshore Structures – Propeller shafts, deck equipment, rigging hardware, and saltwater-resistant fittings
- Automotive and Mechanical Engineering – Engine components, transmission shafts, precision machined parts, and suspension elements
- Pump and Valve Manufacturing – Valve stems, pump shafts, piston rods, and high-pressure fittings
- Construction and Structural Frameworks – Architectural supports, railing systems, and load-bearing structural members
- Food Processing Equipment – Mixer shafts, conveyor components, sanitary fittings, and hygienic processing machinery
- Aerospace Components – Landing gear parts, high-strength fasteners, precision machined aircraft components
Related Products:
Frequently Asked Questions
It typically contains about 22% chromium, 5–6% nickel, 3% molybdenum, and a small amount of nitrogen.
S32205 has tighter composition control with higher chromium, molybdenum, and nitrogen, giving better corrosion resistance than S31803.
“Duplex” means the steel has a mixed microstructure of both austenite and ferrite.
It is both—it has a balanced combination of austenitic and ferritic phases.
When project specifications require higher corrosion resistance or PREN ≥35.
When project specifications require higher corrosion resistance or PREN ≥35.
- 10–100 mm: 3–7 days
- 101–300 mm: 1–2 weeks
- 300+ mm: 3–5 weeks
Max 36 HRC / 310 HB as per NACE MR0175 / ISO 15156