
Duplex Steel S31803 Bars Supplier | UNS S31803 Round Bar Manufacturer
Duplex Steel S31803 Bar, also known as UNS S31803 or 2205, offers excellent corrosion resistance, high mechanical strength, and superior weldability. This duplex stainless steel is a nitrogen-enhanced alloy that combines the best properties of austenitic and ferritic stainless steels.
Widely used in demanding applications, Duplex S31803 Bars are ideal for industries such as oil and gas, chemical processing, marine engineering, power generation, and desalination plants. These bars perform exceptionally well in harsh environments, especially where resistance to chloride stress corrosion cracking is essential.
Our UNS S31803 Round Bars conform to international quality standards including ASTM A276 and ASME SA479, ensuring top-notch performance and reliability. They are available in various sizes, lengths, and finishes to meet diverse project specifications.
Key Features of Duplex S31803 Bars:
- High resistance to pitting and crevice corrosion
- Excellent tensile and yield strength
- Outstanding fatigue resistance
- Good machinability and formability
- Long service life with low maintenance requirements
As a trusted manufacturer and supplier, we offer Duplex Steel S31803 Bars with precise dimensional accuracy and superior surface finish. Custom sizes and cut-to-length options are also available upon request.
Choose us for reliable supply, competitive pricing, and on-time delivery of premium-grade Duplex S31803 Round Bars worldwide.
- ASTM A276 Duplex Steel UNS S31803 Round Bar
- Specifications of Duplex Steel UNS S31803 Round Bar
- Duplex Steel UNS S31803 Round Bar
- Duplex Steel UNS S31803 Bright Bar
- Duplex Steel UNS S31803 Square Bar
- Duplex Steel UNS S31803 Hex Bar
- Duplex Steel UNS S31803 Flat Bar
- Duplex Steel UNS S31803 Forged Bar
- Equivalent Grades
- Chemical Composition
- Mechanical & Physical Properties
- ISO Tolerance
- UNS S31803 Duplex Steel Round Bars Stock availability

Duplex Steel S31803 Bar is a type of bar made from duplex stainless steel grade S31803, also known as UNS S31803 or 2205. Duplex UNS S31803 offers a balanced combination of corrosion resistance, high strength, and excellent weldability. DIN 1.4462 is widely used in various industries including oil and gas, chemical processing, marine, and construction for applications requiring resistance to corrosion, erosion, and stress corrosion cracking in chloride environments. SS 2377 Round Bar is available in various sizes and forms such as round bars, square bars, and hexagonal bars, meeting international standards like ASTM A276 and ASME SA479 for consistent quality and performance.
Equivalent: | Duplex Steel UNS S31803 Round Bar | Duplex UNS S31803 Round Bar | UNS S31803 Round Bar | DIN 1.4462 Round Bar | UNS S31803 Round Bar | ASTM A276 UNS S31803 Duplex Steel Round Bar | ASME SA479 UNS S31803 Duplex Steel Round Bar | SS 2377 Round Bar |
Dimensions: | ASTM, ASME, DIN, BS, EN, IS, AMS, JIS, IBR & Other International Standards. |
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Standard: | ASTM A276, A479 / ASME SA276, A479 |
Inspection & Test Reports: | EN 10204 3.1, Mill Test Certificates, Chemical Reports, PMI Test Reports, Mechanical Reports, Third Party Inspection, NABL Approved Lab, Visual Inspection, Destructive Test and Non Destructive Test Reports |
Available Forms: | Round Bar, Square Bar, Hex Bar, Flat Bar, Rectangular Bar, Forged Bar, Rod |

Piyush steel is manufacturer, stockist, exporter and supplier Duplex Steel UNS S31803 round bars conforming to various national and international standards. We are one of the largest stockist of UNS S31803 Round Bars.
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- Duplex UNS S31803 Round Bar
- UNS S31803 Round Bars
- 1.4462 Round Bars
- UNS S31803 Round Bars
- ASTM A276 UNS S31803 Duplex Steel Round Bar
- ASME SA479 UNS S31803 Duplex Steel Round Bars

Piyush steel is manufacturer, stockist, exporter and supplier Duplex Steel UNS S31803 Bright bars conforming to various national and international standards. We are one of the largest stockist of UNS S31803 Bright Bars.
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- Duplex UNS S31803 Bright Bar
- UNS S31803 Bright Bars
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- ASTM A276 UNS S31803 Duplex Steel Bright Bar
- ASME SA479 UNS S31803 Duplex Steel Bright Bars

Piyush steel is manufacturer, stockist, exporter and supplier Duplex Steel UNS S31803 Square bars conforming to various national and international standards. We are one of the largest stockist of UNS S31803 Square Bars.
- Duplex Steel UNS S31803 Square Bar
- Duplex UNS S31803 Square Bar
- UNS S31803 Square Bars
- 1.4462 Square Bars
- UNS S31803 Square Bars
- ASTM A276 UNS S31803 Duplex Steel Square Bar
- ASME SA479 UNS S31803 Duplex Steel Square Bars

Piyush steel is manufacturer, stockist, exporter and supplier Duplex Steel UNS S31803 Hex bars conforming to various national and international standards. We are one of the largest stockist of UNS S31803 Hex Bars.
- Duplex Steel UNS S31803 Hex Bar
- Duplex UNS S31803 Hex Bar
- UNS S31803 Hex Bars
- 1.4462 Hex Bars
- UNS S31803 Hex Bars
- ASTM A276 UNS S31803 Duplex Steel Hex Bar
- ASME SA479 UNS S31803 Duplex Steel Hex Bars

Piyush steel is manufacturer, stockist, exporter and supplier Duplex Steel UNS S31803 Flat bars conforming to various national and international standards. We are one of the largest stockist of UNS S31803 Flat Bars.
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- Duplex UNS S31803 Flat Bar
- UNS S31803 Flat Bars
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- UNS S31803 Flat Bars
- ASTM A276 UNS S31803 Duplex Steel Flat Bar
- ASME SA479 UNS S31803 Duplex Steel Flat Bars

Piyush steel is manufacturer, stockist, exporter and supplier Duplex Steel UNS S31803 Forged bars conforming to various national and international standards. We are one of the largest stockist of UNS S31803 Forged Bars.
- Duplex Steel UNS S31803 Forged Bar
- Duplex UNS S31803 Forged Bar
- UNS S31803 Forged Bars
- 1.4462 Forged Bars
- UNS S31803 Forged Bars
- ASTM A276 UNS S31803 Duplex Steel Forged Bar
- ASME SA479 UNS S31803 Duplex Steel Forged Bars
Standard: | Duplex S31803 |
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WERKSTOFF NR. | 1.4462 |
UNS | S31803 |
Grade | UNS S31803 |
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Ni | 4.50 – 6.50 |
C | 0.030 max |
Mn | 2.00 max |
P | 0.030 max |
S | 0.020 max |
Si | 1.00 max |
Cr | 22.0 – 23.0 |
Mo | 3.0 – 3.5 |
Fe | 63.72 min |
N | 0.14 – 0.20 |
Density (g/cm 3): | 7.805 |
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Density (lb/in 3): | 0.285 |
Melting Point (°C): | 1420 – 1465 |
Melting Point (°F): | 2588 – 2669 |
h (minus), j (plus/minus), k (plus)
Over | Inc | 7 | 9 | 11 |
1mm | 3mm | 0.009 | 0.025 | 0.06 |
3 | 6 | 0.012 | 0.030 | 0.07 |
6 | 10 | 0.015 | 0.036 | 0.09 |
10 | 18 | 0.018 | 0.043 | 0.11 |
18 | 30 | 0.021 | 0.052 | 0.13 |
30 | 50 | 0.025 | 0.062 | 0.16 |
50 | 80 | 0.030 | 0.074 | 0.19 |
80 | 120 | 0.035 | 0.087 | 0.22 |
120 | 180 | 0.100 | 0.25 | |
180 | 250 | 0.29 | ||
250 | 315 | 0.32 | ||
315 | 400 | 0.36 | ||
400 | 500 | 0.40 | ||
500 | 0.44 |
Example – 100mm Ø h9 = +0/-0.087, j9 = +0.087/-0.087, k9 = +0.087/-0
90mm Ø h11 = +0/-0.22, j11 = +0.22/-0.22, k11 = +0.22/-0
We maintain ready stock of UNS S31803 Duplex Steel Round Bar, Duplex UNS S31803 Hex Bar, Duplex UNS S31803 Square Bar, UNS S31803 Duplex Steel Bright Bar, Duplex Steel Flat Bar and UNS S31803 Duplex Steel Rods. Get in touch with us with your requirement for quick quote.