Buy Large or Small Quantity Duplex 2205 Round Bar, Duplex S31803 Round Bar, Get a best quote for S32750 Round Bar, Manufacturer & Supplier of Super Duplex 2507 Round Bar.
A trusted supplier and exporter of high-quality Duplex and Super Duplex Round Bars, serving diverse industries with reliable and precision-engineered solutions. These round bars are widely used in demanding environments due to their exceptional strength, corrosion resistance, and durability. Manufactured to meet global standards, they are ideal for both domestic and international applications.
A comprehensive range of Duplex and Super Duplex Stainless Steel Round Bars is available, including popular grades such as Duplex 2205, UNS S31803, S32205, and Super Duplex UNS S32750, S32760. These bars come in different forms like cold-drawn, hot-rolled, peeled, and centerless ground, with surface finishes and dimensions customized as per project requirements. Both standard and tailored specifications can be fulfilled to suit a variety of industrial needs.
Duplex Steel round bars are known for their superior mechanical strength and excellent resistance to chloride-induced stress corrosion cracking. Their dual-phase microstructure (austenite and ferrite) provides improved toughness and durability compared to standard stainless steels. Available sizes typically range from 6mm to 100mm, and the bars conform to standards like ASTM A276, ASTM A479, and EN 10088, ensuring consistency and reliability.
With their exceptional strength and corrosion-resistant properties, Super Duplex round bars are widely utilized across industries such as oil & gas, marine, chemical processing, pulp & paper, power generation, and desalination. They are perfectly suited for demanding applications including shafts, fasteners, flanges, valves, and structural components, particularly in highly corrosive or harsh environments. These materials are engineered to deliver long-lasting performance and reliability in critical operations.
Best Supplier of S32205 Duplex Stainless Steel Round Bar in Custom Lengths Up to 12m, Super Duplex S32760 Centerless Ground Round Bar Supplier.
Duplex Steel Round Bars Specifications
| Grade | Duplex S31803, 2205, Super Duplex S32750, S32760 |
|---|---|
| Standard | ASME, ASTM, GB, API, DIN, AISI, SUS, EN, UNS |
| Specification | ASTM A276, A479 / ASME SA276, SA479 |
| Round Bars Size | Diameter: 3-~800mm |
| Hex Bars Size | 2-100mm A/F |
| Flat Bars Size | Thickness: 2 -100mm |
| Width: 10 to 500mm | |
| Square Bars Size | 4 to 100mm |
| Angle Bars Size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Channel Bars | 80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness |
| Hollow Bars | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
| Billet Size | 1/2" to 495mm Diameter |
| Rectangles Size | 33 x 30mm to 295 x 1066mm |
| Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
| Condition | Hardened & tempered, annealed |
| Technique | Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bars, Rod |
| Processing | Bars cutting to 650mm |
| Our Round Bars conforms to NACE MR0175/ISO 15156 | |
Types of Duplex Steel Round Bars
Hot Rolled Round Bars
Manufactured by hot rolling, offering excellent strength and durability.
Cold Drawn Round Bars
Precision-made with a smooth surface finish, ideal for machining.
Peeled & Polished Round Bars
Enhanced surface finish with high dimensional accuracy
Centerless Ground Round Bars
Extremely precise tolerance with a fine, smooth surface.
Forged Round Bars
High-strength bars for heavy-duty industrial applications.
Bright Round Bars
High-quality, smooth surface bars used in precision applications.
Black Round Bars
Raw, unfinished bars used in industrial applications requiring further processing.
Equivalent of Duplex Steel Round Bars
| Grade | ASTM | UNS | WNR |
|---|---|---|---|
| S31803 | ASTM A276/A479 | S31803 | 1.4462 |
| 2205 | ASTM A276/A479 | S32205 | 1.4462 |
| 2507 | ASTM A276/A479 | S32750/S32760 | 1.4410 |
Chemical Composition of Super Duplex Round Bars
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S31803 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 min |
| S32205 | 0.030 max | 2.00 max | 1.00 max | 0.030 max | 0.020 max | 21.0 – 23.0 | 2.50 – 3.50 | 4.50 – 6.50 | 0.8 – 0.20 | 63.54 min |
| S32750 | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 min |
| S32760 | 0.05 max | 1.00 max | 1.00 max | 0.030 max | 0.010 max | 24.00 – 26.00 | 3.00 – 4.00 | 6.00 – 8.00 | 0.20 – 0.30 | 57.61 min |
Mechanical Properties of Super Duplex Round Bars
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S31803 / S32205 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
| S32750 / S32760 | 7.8 | 0.281 | 1350 | 2460 |
Dimensions of Duplex Steel Round Bars
| Size & Dimensions of Super Duplex 2507 Round Bar | |||||||
|---|---|---|---|---|---|---|---|
| Metric | US Bar | ASTM/ Canadian | Japanese | ||||
| Bar Size | Diam. (mm) | Bar Size | Diam. (Inch) | Bar Size | Diam. (mm2) | Bar Size | Diam. (mm) |
| 5 | 5 | #2 | 0.250 | 10M | 100 | 6 | 6 |
| 5.5 | 5.5 | #3 | 0.375 | 15M | 200 | 10 | 10 |
| 6 | 6 | #4 | 0.500 | 20M | 300 | 13 | 13 |
| 7 | 7 | #5 | 0.625 | 25M | 500 | 16 | 16 |
| 8 | 8 | #6 | 0.750 | 30M | 700 | 19 | 19 |
| 9 | 9 | #7 | 0.875 | 35M | 1000 | 22 | 22 |
| 10 | 10 | #8 | 1.000 | 45M | 1500 | 25 | 25 |
| 11 | 11 | #9 | 1.125 | 55M | 2500 | 29 | 29 |
| 12 | 12 | #10 | 1.250 | 32 | 32 | ||
| 14 | 14 | #11 | 1.375 | 35 | 35 | ||
| 16 | 16 | #12 | 1.500 | 38 | 38 | ||
| 18 | 18 | #13 | 1.625 | 41 | 41 | ||
| 20 | 20 | #14 | 1.750 | 44 | 44 | ||
| 22 | 22 | #15 | 1.875 | 48 | 48 | ||
| 25 | 25 | #16 | 2.000 | 51 | 51 | ||
| 28 | 28 | #18 | 2.250 | 57 | 57 | ||
| 32 | 32 | ||||||
| 36 | 36 | ||||||
| 40 | 40 | ||||||
| 44 | 44 | ||||||
| 50 | 50 | ||||||
Diameter Tolerances for Duplex Steel Round Bars
| NOMINAL SIZE | h5 | h6 | h7 | h8 | h9 | H10 | H11 | h12 |
|---|---|---|---|---|---|---|---|---|
| DIAMETER mm | ||||||||
| ~ to 3 | +0.004/0 | +0.006/0 | +0.01/0 | +0.014/0 | +0.025/0 | +0.04/0 | +0.06/0 | +0.1/0 |
| over 3 to 6 | +0.005/0 | +0.008/0 | +0.012/0 | +0.018/0 | +0.03/0 | +0.048/0 | +0.075/0 | +0.12/0 |
| over 6 to 10 | +0.006/0 | +0.009/0 | +0.015/0 | +0.022/0 | +0.036/0 | +0.058/0 | +0.09/0 | +0.15/0 |
| over 10 to 18 | +0.008/0 | +0.011/0 | +0.018/0 | +0.027/0 | +0.043/0 | +0.07/0 | +0.11/0 | +0.18/0 |
| over 18 to 30 | +0.009/0 | +0.013/0 | +0.021/0 | +0.033/0 | +0.052/0 | +0.084/0 | +0.13/0 | +0.21/0 |
| over 30 to 50 | +0.011/0 | +0.016/0 | +0.025/0 | +0.039/0 | +0.062/0 | +0.1/0 | +0.16/0 | +0.25/0 |
| over 50 to 80 | +0.013/0 | +0.019/0 | +0.03/0 | +0.046/0 | +0.074/0 | +0.12/0 | +0.19/0 | +0.3/0 |
| over 80 to 120 | +0.015/0 | +0.022/0 | +0.035/0 | +0.054/0 | +0.087/0 | +0.14/0 | +0.22/0 | +0.35/0 |
| over 120 to 180 | +0.018/0 | +0.025/0 | +0.04/0 | +0.063/0 | +0.1/0 | +0.16/0 | +0.25/0 | +0.4/0 |
| over 180 to 250 | +0.02/0 | +0.029/0 | +0.046/0 | +0.072/0 | +0.115/0 | +0.185/0 | +0.29/0 | +0.46/0 |
Weight chart of Super Duplex Round Bars
| Duplex Stainless Steel 2205 Round bar | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Kgs / Foot | Kgs / Mtr | Size | Kgs / Foot | Kgs / Mtr | Size | Kgs / Foot | Kgs / Mtr |
| 3mm | 0.017 | 0.055 | 20mm | 0.753 | 2.470 | 3″ | 10.900 | 35.762 |
| 1/8″ | 0.019 | 0.062 | 22mm | 0.908 | 2.979 | 3-1/4″ | 12.800 | 41.996 |
| 5/32″ | 0.029 | 0.095 | 7/8″ | 0.926 | 3.038 | 3-1/2″ | 14.850 | 48.772 |
| 4mm | 0.030 | 0.098 | 24mm | 1.080 | 3.543 | 3-3/4″ | 17.001 | 55.780 |
| 3/16″ | 0.043 | 0.141 | 25mm | 1.180 | 3.871 | 4″ | 19.306 | 63.340 |
| 5mm | 0.047 | 0.154 | 1″ | 1.210 | 3.970 | 4-1/4″ | 21.908 | 72.249 |
| 7/32″ | 0.058 | 0.190 | 26mm | 1.271 | 4.170 | 4-1/2″ | 24.4487 | 80.340 |
| 6mm | 0.068 | 0.223 | 27mm | 1.368 | 4.490 | 4-3/4″ | 27.366 | 90.249 |
| 1/4″ | 0.076 | 0.249 | 1-1/8″ | 1.534 | 5.033 | 5″ | 30.461 | 99.940 |
| 7mm | 0.091 | 0.298 | 30mm | 1.691 | 5.548 | 5-1/2″ | 36.690 | 121.000 |
| 5/16″ | 0.118 | 0.387 | 1-1/4″ | 1.924 | 6.349 | 6″ | 43.860 | 143.900 |
| 8mm | 0.120 | 0.398 | 32mm | 1.894 | 6.314 | 6-1/2″ | 51.093 | 167.630 |
| 9mm | 0.152 | 0.498 | 1-3/8″ | 2.303 | 7.550 | 7″ | 59.432 | 196.000 |
| 3/8″ | 0.170 | 0.557 | 35mm | 2.390 | 7.553 | 7-1/2″ | 68.226 | 225.000 |
| 10mm | 0.189 | 0.620 | 36mm | 2.438 | 7.999 | 8″ | 77.586 | 254.55 |
| 11mm | 0.228 | 0.748 | 38mm | 2.792 | 8.903 | 10″ | 121.048 | 397.140 |
| 7/16″ | 0.232 | 0.761 | 1-1/2″ | 2.715 | 8.951 | |||
| 12mm | 0.271 | 0.889 | 40mm | 3.009 | 9.872 | |||
| 1/2″ | 0.303 | 0.994 | 1-5/8″ | 3.200 | 10.449 | |||
| 13mm | 0.318 | 1.043 | 1-3/4″ | 3.712 | 12.179 | |||
| 14mm | 0.368 | 1.207 | 45mm | 3.807 | 12.555 | |||
| 9/16″ | 0.383 | 1.256 | 1-7/8″ | 4.260 | 13.977 | |||
| 15mm | 0.424 | 1.391 | 48mm | 4.330 | 14.205 | |||
| 5/8″ | 0.473 | 1.551 | 50mm | 4.698 | 15.414 | |||
| 16mm | 0.481 | 1.578 | 2″ | 4.848 | 15.906 | |||
| 17mm | 0.543 | 1.791 | 2-1/8″ | 5.475 | 17.963 | |||
| 11/16″ | 0.573 | 1.880 | 2-1/4″ | 6.135 | 20.128 | |||
| 18mm | 0.610 | 2.001 | 60mm | 6.768 | 22.205 | |||
| 3/4″ | 0.682 | 2.237 | 2-3/8″ | 6.838 | 22.435 | |||
| 2-1/2″ | 7.576 | 24.856 | ||||||
| 2-5/8″ | 8.354 | 27.409 | ||||||
| 2-3/4″ | 9.169 | 30.083 | ||||||
Worldwide Supply of Duplex Steel Round Bars
Russia, Bahrain, Cyprus, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Palestine, Qatar, Saudi Arabia, Syria, Turkey, United Arab Emirates (UAE), Yemen, United States of America (USA), Albania, Andorra, Austria, Belarus, Belgium, Bosnia and Herzegovina, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Moldova, Monaco, Montenegro, Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom, Vatican City.
