Super Duplex Steel Round Bars are the high-performance evolution of standard duplex alloys. By increasing the chromium content and lowering nickel relative to other cast steels, these bars achieve a perfect 50/50 balance of ferrite and austenite. This unique chemistry provides elite protection against chemical attack, stress corrosion, and pitting in the most volatile environments.
Known for their incredible tensile strength and dimensional accuracy, Super Duplex Steel Bars are a preferred choice for heavy industrial sectors. They offer an extended working life and cost-effectiveness because they require significantly less maintenance than standard stainless steels, even when exposed to high-chloride or acidic conditions.
Super Duplex Steel Round Bar Manufacture & Supplier in India
Jade Alloys is a firm which produces premium Super Duplex Stainless Steel round bars which are even beyond the industry specifications. With modern state-of-the-art production facilities and qualified technical staff we are able to make each round bar super duplex to a precision and long lasting durability.
We take pride in our ability to fulfill orders of any scale from small custom batches to large industrial shipments while maintaining competitive pricing. Our streamlined logistics ensure that your materials arrive on time, keeping your critical projects on track and running smoothly.
Looking to buy Duplex Steel Round Bars?
Check UNS S32506 Round Bar & UNS S32205 Round Bar Price List in India
Nuts Weight Chart
Super Duplex Steel Round Bars List
We stock and manufacture the two most vital grades of Super Duplex steel:
Super Duplex Round Bar Specification
Our Super Duplex Steel Round Bar inventory covers a wide range of sizes and shapes:
| Feature | Details |
|---|---|
| Standard Sizes | Round: 3 – 800mm | Square: 4mm – 100mm | Flat & Hex: 2mm – 100mm |
| Length | 3 to 6 Meters (Custom lengths available) |
| Operating Temp | -50°C to 300°C |
| Tolerance | H8-H11 & G5-G6 |
| Density | 7.8 g/cm³ |
| Melting Point | 1350 °C |
| Hardness | ≤ 300 HB |
Super Duplex Bar Mechanical Properties
| Grade | Elongation | Tensile Strength Rm | Yield Strength Rp0.2 | Impact, Charpy-V,-46ºC [J] | Hardness |
|---|---|---|---|---|---|
| Super Duplex | ≥ 25 % | ≥ 750 MPa | ≥ 550 MPa | ≥ 65 | ≤ 300 HB |
Chemical Composition of Super Duplex Steel Square Bar
| Grade | Mn | C | P | Si | S | Ni | Cu | PRE | N | Cr | Mo |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. | 1,20 | 0,030 | 0,025 | 0,80 | 0,010 | 8,00 | 0,50 | 0,32 | 26,0 | 4,50 |
Super Duplex Round Bar Physical Properties
| Density | Modulus of Elasticity | Thermal Expansion | Thermal Conductivity |
|---|---|---|---|
| 7.8 g/cm3 | 200 GPa | 30–100°C (86–212°F) | 31.5/μΩ. in, 80/μΩ cm |
Types of Super Duplex Forged Bars
Stainless Steel Super Duplex Round Bar Tolerance
| Dia – mm | 1 < 3 | 3 < 6 | 10 < 18 | 6 < 10 | 18 < 30 | 50 < 80 | 30 < 50 | 80 < 120 | 180 < 250 | 120 < 180 | 250 < 275 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| ISO h7 | 0.010 | 0.012 | 0.018 | 0.015 | 0.021 | 0.030 | 0.025 | 0.035 | – | – | – |
| ISO h6 | 0.006 | 0.008 | 0.011 | 0.009 | 0.013 | 0.019 | 0.016 | 0.022 | – | – | – |
| ISO h8 | 0.014 | 0.018 | 0.027 | 0.022 | 0.033 | 0.046 | 0.039 | 0.054 | 0.072 | 0.063 | 0.081 |
| ISO h10 | 0.040 | 0.048 | 0.070 | 0.058 | 0.084 | 0.120 | 0.100 | 0.140 | 0.185 | 0.160 | 0.210 |
| ISO h9 | 0.025 | 0.030 | 0.043 | 0.036 | 0.052 | 0.074 | 0.062 | 0.087 | 0.115 | 0.100 | 0.130 |
| ISO h11 | 0.060 | 0.075 | 0.110 | 0.090 | 0.130 | 0.190 | 0.160 | 0.220 | 0.290 | 0.250 | 0.320 |
Duplex vs. Super Duplex: Which is Better?
While both are dual-phase steels, Super Duplex offers superior performance for extremely caustic conditions.
| Features | Duplex Stainless Steel | Super Duplex Stainless Steel |
|---|---|---|
| Chromium Content | Approximately 22% | Approximately 25% |
| Pitting Resistance | Strong defense | Superior/Elite resistance |
| Suitability | Mild to high corrosion | Extremely caustic & high-pressure |
HS Code of Super Duplex Round Bars
| Grade | HS Code |
|---|---|
| Super Duplex Round Bar | 72222099 |
Super Duplex Steel Round Bars Weight Chart
| Size | 11 | 7 | 5/32″ | 4 | 10 | 3/16″ | 6 | 1/4″ | 5 | 7/32″ | 5/16″ | 8 | 9 | 1/8″ | 3/8″ | 3 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kgs / Foot | 0.228 | 0.091 | 0.029 | 0.03 | 0.189 | 0.043 | 0.068 | 0.076 | 0.047 | 0.058 | 0.118 | 0.12 | 0.152 | 0.019 | 0.17 | 0.017 |
| Kgs / Mtr | 0.748 | 0.298 | 0.095 | 0.098 | 0.62 | 0.141 | 0.223 | 0.249 | 0.154 | 0.19 | 0.387 | 0.398 | 0.498 | 0.062 | 0.557 | 0.055 |
| Size | 38 | 30 | 7/8″ | 24 | 36 | 25 | 27 | 1-1/8″ | 1″ | 26 | 1-1/4″ | 32 | 1-3/8″ | 22 | 35 | 20 |
| Kgs / Foot | 2.792 | 1.691 | 0.926 | 1.08 | 2.438 | 1.18 | 1.368 | 1.534 | 1.21 | 1.271 | 1.924 | 1.894 | 2.303 | 0.908 | 2.39 | 0.753 |
| Kgs / Mtr | 8.903 | 5.548 | 3.038 | 3543 | 7.999 | 3.871 | 4.49 | 5.033 | 3.97 | 4.17 | 6.319 | 6.314 | 7.55 | 2.979 | 7.553 | 2.47 |
| Size | 10″ | 5-1/2″ | 3-1/2″ | 3-3/4″ | 8″ | 4″ | 4-3/4″ | 5″ | 4-1/4″ | 4-1/2″ | 6″ | 6-1/2″ | 7″ | 3-1/4″ | 7-1/2″ | 3″ |
| Kgs / Foot | 121.048 | 36.69 | 14.85 | 17.001 | 77.586 | 19.306 | 27.366 | 30.461 | 21.908 | 24.4487 | 13.86 | 51.093 | 59.432 | 12.8 | 68.226 | 10.9 |
| Kgs / Mtr | 397.14 | 121 | 48.772 | 55.78 | 254.55 | 63.34 | 90.249 | 99-940 | 72.249 | 80.34 | 143.9 | 167.63 | 196 | 41.996 | 2,25,000 | 35.762 |
Super Duplex Stainless Steel Rod Size Chart
| US Bar | Metric | Japanese | ASTM | ||||
|---|---|---|---|---|---|---|---|
| Bar size | Diam. (inch) | Bar size | Diam. (mm) | Bar size | Diam. (mm) | Bar size | Diam. (mm) |
| #3 | 0.375 | 5.5 | 5.5 | 10 | 10 | 15M | 200 |
| #2 | 0.250 | 5 | 5 | 6 | 6 | 10M | 100 |
| #5 | 0.625 | 7 | 7 | 16 | 16 | 25M | 500 |
| #4 | 0.500 | 6 | 6 | 13 | 13 | 20M | 300 |
| #6 | 0.750 | 8 | 8 | 19 | 19 | 30M | 700 |
| #8 | 1.000 | 10 | 10 | 25 | 25 | 45M | 1500 |
| #7 | 0.875 | 9 | 9 | 22 | 22 | 35M | 1000 |
| #9 | 1.125 | 11 | 11 | 29 | 29 | 55M | 2500 |
| #11 | 1.375 | 14 | 14 | 35 | 35 | ||
| #10 | 1.250 | 12 | 12 | 32 | 32 | ||
| #12 | 1.500 | 16 | 16 | 38 | 38 | ||
| #14 | 1.750 | 20 | 20 | 44 | 44 | ||
| #13 | 1.625 | 18 | 18 | 41 | 41 | ||
Applications of Super Duplex Steel Round Bars
Super duplex steel round bars are used in critical environments where high mechanical strength must be paired with extreme resistance to corrosion. Their ability to withstand high-pressure and caustic conditions makes them essential for the following applications:
- Oil & Gas Industry
- Marine & Shipbuilding
- Desalination Plants
- Pump & Valve Parts
- Construction & Structural Engineering
- Power Generation
- Chemical & Petrochemical Plants
- Industrial Components
- Pulp & Paper Industry
Contact Jade Alloys today for a customized quote and current stock availability for Super Duplex Steel Round Bars.
