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Super Duplex Steel Circles are expertly crafted components that excel in tough, corrosive industrial settings. Thanks to their unique dual-phase microstructure, which combines austenite and ferrite, these circles are highly resistant to issues like chloride-induced stress corrosion cracking, pitting, and crevice corrosion. They also boast impressive mechanical strength, toughness, and durability, outshining traditional stainless steels. Offered in a variety of diameters, thicknesses, and finishes, Super Duplex Steel Circles are produced to meet rigorous quality standards, ensuring they perform reliably in applications that require both strength and resistance to corrosion.
Typically, the makeup of Super Duplex Steel Circles includes chromium (24–26%), nickel (6–8%), molybdenum (3–5%), along with nitrogen and manganese. This well-balanced alloying results in remarkable tensile strength of about 750–850 MPa, with yield strength nearly double that of austenitic stainless steels, and excellent hardness. They also exhibit good weldability, impact toughness, and stability across a range of temperatures, making them versatile for various operating conditions. Their outstanding metallurgical properties guarantee long-lasting performance even in aggressive environments.
| Specifications | ASTM A240 / ASME SA240 |
| Dimensions | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Thickness | 1 mm To 100 mm |
| Diameter | Upto 2000 mm |
| Circle | 3″ DIA up to 38″ DIA 1500 lbs max |
| Rings | 3″ OD up to 48″ OD Up to 900 lbs max |
| Cutting | Plazma & Machined Cut |
| Finish | HR, CR, 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated) |
| Form | Cold Rolled Circle, Small Flat Circle, Industrial Circle, Perforated Circle, Forged Steel Circles, Cnc Finish Circle, Polished Unique Circle, Hot Rolled Circle, Fey Laminar Rings, Proof Machined Rings, Cold Rolled Rings, Hot Rolled Rings, McInnes Rolled Rings, Die-Formed Rings, Forging Rings, CNC Machined Rings. |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Wiraphan Sheets and Plates based in Bangkok, Thailand, is a leading supplier and stockist of high-quality metal products, including Sheets, Plates, Coils, Foils, Angles, Channels, Circles, and Slitting Coils, all offered with exceptional service and tailored to meet our customers specific requirements. With a focus on delivering superior products, we cater to a wide range of industries, providing reliable solutions for diverse applications. Our extensive inventory includes Known for our unique finishing techniques and commitment to quality. We are dedicated to ensuring customer satisfaction through dependable service and top-notch products.
You’ll find Super Duplex Steel Circles widely used in sectors like chemical processing, oil and gas, marine engineering, desalination plants, and the paper and pulp industry. They’re perfect for crafting flanges, rings, washers, seals, gaskets, and other precision components that need to withstand seawater and corrosive substances. Plus, their high strength and durability make them ideal for structural applications, heat exchangers, and subsea equipment. With low maintenance needs and a long service life, Super Duplex Steel Circles offer a cost-effective solution for industries that rely on dependable, corrosion-resistant materials.
Yes, we offer custom sizes for Super Duplex Steel Circle to meet specific project needs. Our team at Wiraphan Sheets and Plates is dedicated to providing tailored solutions for all your requirements. For more details, contact us at sales@wiraphansheetsplates.com.
| Size | 18 G. | 19 G. | 20 G. | 22 G. | 24 G. | 26 G. |
| .4.5 | .0-107 | 0-085 | 0-080 | 0-062 | 0.049 | 0-040 |
| 5 | 0-120 | 0-095 | 0-090 | 0-070 | 0-055 | 0-045 |
| 5.5 | 0-146 | 0-119 | 0-109 | 0-085 | 0-066 | 0-054 |
| 6 | 0-172 | 0-136 | 0-130 | 0-100 | 0-079 | 0-064 |
| 6.5 | 0-200 | 0-153 | 0-150 | 0-128 | 0-093 | 0-074 |
| 7 | 0-235 | 0-190 | 0-176 | 0-136 | 0-107 | 0-088 |
| 7.5 | 0.270 | 0.212 | 0.201 | 0-157 | 0-123 | 0-100 |
| 8 | 0-307 | 0-240 | 0-230 | 0-180 | 0-140 | 0-115 |
| 8.5 | 0-347 | 0-270 | 0-262 | 0-202 | 0-156 | 0-130 |
| 9 | 0-388 | 0-330 | 0-301 | 0-230 | 0-178 | 0-145 |
| 9.5 | 0-472 | 0-342 | 0-324 | 0-252 | 0-198 | 0-162 |
| 10 | 0-480 | 0-380 | 0-360 | 0-280 | 0-220 | 0-180 |
| 11 | 0-580 | 0-450 | 0-435 | 0-338 | 0-266 | 0-218 |
| 12 | 0-690 | 0-540 | 0-518 | 0-403 | 0-318 | 0-253 |
| 13 | 0-811 | 0-640 | 0-508 | 0-608 | 0-371 | 0-304 |
| 14 | 0-940 | 0-750 | 0-708 | 0-558 | 0-430 | 0-352 |
| 15 | 1-080 | 0-860 | 0-808 | 0-650 | 0-495 | 0-405 |
| 16 | 1-228 | 0-960 | 0-921 | 0-736 | 0-563 | 0-460 |
| 17 | 1-382 | 1-080 | 0-940 | 0-809 | 0-635 | 0-560 |
| 18 | 1-595 | 1-200 | 1-116 | 0-907 | 0-712 | 0-683 |
| 19 | 1-732 | 1-350 | 1-300 | 1-010 | 0-794 | 0-750 |
| 20 | 1-920 | 1-400 | 1-340 | 1-120 | 0-880 | 0-785 |
| RAW MATERIAL | MAX. HARDNESS | TEMPERATURE | ABBREVIATIONSMARKER | |
| BRUCELLOSIS | ROCKWELL | |||
| SOFT IRON | 90 | 56 | -60 540 | D |
| LOW CB STEEL | 120 | 68 | -40 540 | S |
| 304SS | 160 | 83 | -250 700b | 304 |
| 304LSS | 150 | 83 | -250 450 | 304L |
| 316SS | 160 | 83 | -200 700b | 316 |
| 316LSS | 150 | 83 | -200 450 | 316L |
| 321SS | 160 | 83 | -200 700b | 321 |
| 347SS | 160 | 83 | -200 700b | 347 |
| 410SS | 170 | 86 | -40 650 | 410 |
| 5Cr-0.5Mo | 130 | -29 650 | ||
| COPPER | 80 | -100 315 | ||
| ALUMINUM | 35 | -200 425 | ||
| INCONEL 600 | 150 | -100 1095 | ||
| INCOLOY 825 | 160 | -100 1095 | ||
| MONEL 400 | 150 | -100 760 | ||
| TITANIUM | 215 | -200 540 | ||
| NICHEL 200 | 110 | -200 760 | ||
| HASTELLOY C276 | 200 | -100 1095 | ||
Super Duplex Steel Circles are widely used in industries requiring robust and corrosion-resistant materials. In the marine sector, they are employed in shipbuilding, offshore platforms, and subsea equipment due to their resistance to seawater corrosion. In the oil and gas industry, they are utilized for pipelines, heat exchangers, and pressure vessels. Their strength and durability make them suitable for chemical processing equipment and desalination plants. Additionally, they are used in structural components, power generation, and pulp and paper industries, offering reliable performance in demanding and corrosive environments.
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