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Super duplex tube
What is super duplex tube?
The Super Duplex material has a combination of different features present in ferritic and austenitic grade stainless steel. It means that the tube possesses its high strength from the ferritic structure, whereas its corrosion resistance properties are from austenitic structure. The Super Duplex Tubing solutions also show good resistance to stress corrosion cracking. The tubes possess good toughness and are readily available at a competitive price.
They show good tensile strength and high resistance to stress corrosion cracking at moderate temperature conditions. The chemical composition of 2507 Tubing has added chromium which increases its ability to resist pitting corrosion. They are available in a wide range of sizes and can be customized according to the client requirements. Super Duplex Tubes are used for processing gas & oil and also in heat exchangers.
Alloy 2507 Seamless Tubing manufacturer in India
Advantages of super duplex seamless tube and welded tube
Advantages of Super Duplex Seamless Tubes
- They show overall good performance with more resistance to leakage due to the absence of welds.
- These are heavy and thick-walled tubes.
- Seamless tubes have better corrosion resistance and enhanced durability.
- The seamless 2507 Super Duplex Tubing can be used in high temperature and pressure applications.
Advantages of super duplex welded tubes
- Fusion metals or tests are not needed to determine the weld integrity.
- They are available in longer lengths.
- These are more affordable than the seamless tubes.
- There is no size restriction and they are readily available.
- The welded Super Duplex 2507 Tubes have thinner walls and smoother surfaces, with lighter weight.
- They have tighter tolerances and show consistency in their wall thickness.
Finding Super duplex seamless tube supplier in Gujarat? We maintain a wide stock of 2507 tubing in round and square shapes, call now to check price list
Super Duplex Tube
Super Duplex Tubing
2507 Tubing
Which is stronger super duplex round tubing or square tubing?
The round Super Duplex Heat Exchanger Tubes are stronger than the square ones. Due to the vertical edges and tension distribution pattern of the square tubes, some of its strength is lost when it is under pressure. However, the round 1.4410 Tubes has no such weak points and they have a consistent strength along their interior and exterior surfaces.
We have a range of 2507 super duplex tubing and 1.4410 tube sizes ranging from 6.35 mm to 152 mm or custom for use in petroleum and chemical plants
Table of Contents
- Specifications of Super duplex tube
- Super duplex tubing types
- 2507 tubing temperature range
- 2507 super duplex tubing welding material
- Super duplex Seamless tube wall thickness
- Weight chart of Super duplex Boiler tubes
- Super duplex Heat Exchanger tube chemical composition
- Super duplex 2507 tube equivalent
- 1.4410 tube tolerance
- Mechanical properties of Super duplex stainless steel tubes
- Duplex 2507 tube sizes
Specifications of Super duplex tube
| Outside Diameter (OD) | Wall Thickness | Size |
|---|---|---|
| .250"–1.000" | .035″–.134″ | 1/2” to 8” |
| Standards | Forms | Length |
| ASTM A 789 ASME SA 789 | Coiled, Straight, seamless, welded, ERW | 3 to 6 meter |
Searching Super duplex boiler tube supplier in India? Buy Alloy 2507 heat exchanger tube at the factory price
Super duplex tubing types
2507 Super Duplex Tubing
Super Duplex Seamless Tube
Super Duplex Boiler Tube
Super Duplex Heat Exchanger Tube
Super Duplex 2507 Tube
1.4410 Tubes
Looking for the fastest delivery of Super duplex 2507 tube in India? Find your sizes and thickness of 25cr super duplex tubing in our ready stock
2507 tubing temperature range
Grade 2507 Temperature Range: 1050–1125°C/ 1922–2057°F
| ASME BPVC | GERMAN VDTÜV | |
|---|---|---|
| 2507 | 316°C/ 600°F | 250°C/ 482°F |
2507 super duplex tubing welding material
- Submerged-arc welding (SAW)
- Shielded metal-arc welding (SMAW or MMA)
- Flux-cored arc welding (FCAW)
- Gas metal-arc welding (GMAW or MIG/MAG)
- Gas tungsten-arc welding (TIG or GTAW )
Super duplex Seamless tube wall thickness
| NOMINAL | O.D. INCHES | 40 | 80 | 80S & E.H. | 10S | 10 | 40S & STD | 160 |
|---|---|---|---|---|---|---|---|---|
| 2 | 2.375 | .154 | .218 | .218 | .109 | .109 | .154 | .343 |
| 2 1/2 | 2.875 | .203 | .276 | .276 | .120 | .120 | .203 | .375 |
| 3 | 3.500 | .216 | .300 | .300 | .120 | .120 | .216 | .437 |
| 3 1/2 | 4.000 | .226 | .318 | .318 | .120 | .120 | .226 | |
| 4 | 4.500 | .237 | .337 | .337 | .120 | .120 | .237 | .531 |
| 4 1/2 | 5.000 | .355 | .247 | |||||
| 5 | 5.563 | .258 | .375 | .375 | .134 | .134 | .258 | .625 |
| 6 | 6.625 | .280 | .432 | .432 | .134 | .134 | .280 | .718 |
| 7 | 7.625 | .500 | .301 | |||||
| 1/8 | .405 | .068 | .095 | .095 | .049 | .049 | .068 | |
| 1/4 | .540 | .088 | .119 | .119 | .065 | .065 | .088 | |
| 3/8 | .675 | .091 | .126 | .126 | .065 | .065 | .091 | |
| 1/2 | .840 | .109 | .147 | .147 | .083 | .083 | .109 | .187 |
| 3/4 | 1.050 | .113 | .154 | .154 | .083 | .083 | .113 | .218 |
| 1 | 1.315 | .133 | .179 | .179 | .109 | .109 | .133 | .250 |
| 1 1/4 | 1.660 | .140 | .191 | .191 | .109 | .109 | .140 | .250 |
| 1 1/2 | 1.900 | .145 | .200 | .200 | .109 | .109 | .145 | .281 |
| 8 | 8.625 | .322 | .500 | .500 | .148 | .148 | .322 | .906 |
| 9 | 9.625 | .500 | .342 | |||||
| 10 | 10.750 | .365 | .593 | .500 | .165 | .165 | .365 | 1.125 |
| 11 | 11.750 | .500 | .375 | |||||
| 12 | 12.750 | .406 | .687 | .500 | .180 | .180 | .375 | 1.312 |
| 14 | 14.000 | .437 | .750 | .500 | .188 | .250 | .375 | 1.406 |
| 16 | 16.000 | .500 | .843 | .500 | .188 | .250 | .375 | 1.593 |
| 18 | 18.000 | .562 | .937 | .500 | .188 | .250 | .375 | 1.781 |
Weight chart of Super duplex Boiler tubes
| OUTER DIA MM | NOMINAL SIZES | WALL THK MM | WEIGHT, KILOGRAM/M |
|---|---|---|---|
| 48.26 | 1 1/2" 40S | 3.68 | 5.49 |
| 60.33 | 2" 5S | 1.65 | 2.42 |
| 60.33 | 2" 10S | 2.77 | 3.99 |
| 60.33 | 2" 40S | 3.91 | 5.52 |
| 73 | 2 1/2" 10s | 3.05 | 5.35 |
| 73 | 2 1/2" 40S | 5.16 | 8.77 |
| 88.90 | 3" 5S | 2.11 | 4.58 |
| 88.90 | 3" 10S | 3.05 | 6.56 |
| 88.90 | 3" 40S | 5.49 | 11.47 |
| 101.60 | 3 1/2" 10s | 3.05 | 7.53 |
| 114.30 | 4" 5S | 2.11 | 5.93 |
| 114.30 | 4" 10S | 3.05 | 8.50 |
| 114.30 | 4" 40S | 6.02 | 16.32 |
| 141.3 | 5" 10S | 3.4 | 11.74 |
| 141.3 | 5" 40S | 6.55 | 22.1 |
| 168.3 | 6" 5S | 2.77 | 11.48 |
| 168.3 | 6" 10S | 3.4 | 14.04 |
| 168.3 | 6" 40S | 7.11 | 28.69 |
| 219.1 | 8" 5S | 2.77 | 15.0 |
| 219.1 | 8" 10S | 3.76 | 20.27 |
| 219.1 | 8" 40S | 8.18 | 43.2 |
| 273 | 10" 5S | 3.40 | 22.95 |
| 273 | 10" 10S | 4.19 | 28.2 |
| 21.34 | 1/2" 10S | 2.11 | 1.02 |
| 21.34 | 1/2" 40S | 2.77 | 1.29 |
| 26.67 | 3/4" 10S | 2.11 | 1.30 |
| 26.67 | 3/4" 40S | 2.87 | 1.71 |
| 33.40 | 1" 5S | 1.65 | 1.31 |
| 33.40 | 1" 10S | 2.77 | 2.13 |
| 33.40 | 1" 40S | 3.38 | 2.54 |
| 42.16 | 1 1/4" 5S | 1.65 | 1.67 |
| 42.16 | 1 1/4" 10S | 2.77 | 2.73 |
| 42.16 | 1 1/4" 40s | 3.56 | 3.44 |
| 48.26 | 1 1/2" 5S | 1.65 | 1.92 |
| 48.26 | 1 1/2" 10S | 2.77 | 3.16 |
| 273 | 10" 40S | 9.27 | 61.22 |
| 323.9 | 12" 5S | 3.96 | 31.72 |
| 323.9 | 12" 10S | 4.57 | 36.54 |
| 323.9 | 12" 40S | 9.53 | 75.02 |
| 355.6 | 14" 10S | 4.78 | 41.99 |
| 355.6 | 14" STD | 9.53 | 82.583 |
| 406.4 | 16" STD | 9.53 | 94.706 |
| 406.4 | 16" 10S | 4.78 | 48.07 |
| 457.2 | 18" 10S | 4.78 | 54.151 |
| 508.0 | 20" 10S | 5.54 | 69.702 |
| 610.0 | *24" 10S | 6.35 | 95.919 |
Super duplex Heat Exchanger tube chemical composition
| Silicon (Si) Max. | 0.80 |
| Chromium (Cr) | 24.0–26.0 |
| Nickel (Ni) | 6.0–8.0 |
| Molybdenum (Mo) | 3.0–5.0 |
| Carbon (C) Max. | 0.030 |
| Manganese (Mn) Max. | 1.20 |
| Phosphorous (P) Max. | 0.035 |
| Sulphur (S) Max. | 0.020 |
| Nitrogen (N) | 0.24–0.32 |
| Iron (Fe) | Bal. |
| Copper (Cu) | 0.50 |
| Other Elements | — |
Super duplex 2507 tube equivalent
| Alloy | Werkstoff NR. | Specifications | AFNOR | Grade | UNS Designation | 1.4410 |
|---|---|---|---|---|---|---|
| Super Duplex 2507 | 1.4410 | A/SA789, A/SA790 | Z3 CN 25.06 Az | F53 | S32750 | X2 Cr Ni MoN 25.7.4 |
1.4410 tube tolerance
| OD | Lengths | Wall |
|---|---|---|
| ±0.005" (0.127 mm) | Coils to 80,000' (24,384 m) | ±10% |
<1-1/2" (38.1 mm) ±0.005" (0.13 mm)
1-1/2" (38.1 mm) to 3" (76.2 mm) ±0.010" (0.25 mm)
3-1/2" (88.9 mm) to 4" (101.6 mm) ±0.015" (0.38 mm) |
Randoms up to +2" (50.8 mm) Cuts +1/8" (3 mm) -0" Coils to 80,000' (24,384 m) |
±10% |
Mechanical properties of Super duplex stainless steel tubes
| Yield Strength | Tensile Strength | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | UNS Designation | ksi | psi | MPa | Spec. | psi | MPa | ksi | Elongation in 2 in. (min.) % | Modulus of Elasticity (x106psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Grain Size Req. | Max. Hardness | Thermal Conductivity (BTU-in/ ft2-h-°F) |
| 2507 | S32750 | 116 | 80,000 | 550 | A789, A790 | 116,000 | 800 | 80 | 15 | 27.5 | 7.2 | - | 32 Rc | |
| 2507 | S32950 | 100 | 70,000 | 485 | A789, A790 | 100,000 | 690 | 70 | 20 | - | - | - | 30.5 Rc | - |
Duplex 2507 tube sizes
| OD mm | WT mm | Schedule | Kg/m | inch |
|---|---|---|---|---|
| 33.040 | 6.0352) | 160 | 4.030 | 1 |
| 42.016 | 2.077 | 10S | 2.073 | 1¼ |
| 42.016 | 3.056 | 40S | 3.044 | 1¼ |
| 42.016 | 4.085 | 80S | 4.053 | 1¼ |
| 42.016 | 6.0352) | 160 | 5.069 | 1¼ |
| 48.026 | 2.077 | 10S | 3.016 | 1½ |
| 48.026 | 3.068 | 40S | 4.011 | 1½ |
| 48.026 | 5.008 | 80S | 5.049 | 1½ |
| 60.033 | 2.077 | 10S | 3.099 | 2 |
| 60.033 | 3.091 | 40S | 5.052 | 2 |
| 60.033 | 5.054 | 80S | 7.060 | 2 |
| 60.033 | 8.0742) | 160 | 11.029 | 2 |
| 73.003 | 3.005 | 10S | 5.035 | 2½ |
| 73.003 | 5.016 | 40S | 8.077 | 2½ |
| 73.003 | 7.001 | 80S | 11.059 | 2½ |
| 88.090 | 3.005 | 10S | 6.056 | 3 |
| 88.090 | 5.049 | 40S | 11.047 | 3 |
| 88.090 | 7.062 | 80S | 15.051 | 3 |
| 88.090 | 11.0132) | 160 | 21.067 | 3 |
| 101.060 | 3.005 | 10S | 7.053 | 3½ |
| 13.072 | 1.065 | 10S | 0.050 | 1/4 |
| 13.072 | 2.024 | 40S | 0.064 | 1/4 |
| 13.072 | 3.002 | 80S | 0.081 | 1/4 |
| 17.015 | 1.065 | 10S | 0.064 | 3/8 |
| 17.015 | 2.031 | 40S | 0.086 | 3/8 |
| 17.015 | 3.020 | 80S | 1.012 | 3/8 |
| 21.034 | 2.011 | 10S | 1.002 | 1/2 |
| 21.034 | 2.077 | 40S | 1.029 | 1/2 |
| 21.034 | 3.073 | 80S | 1.065 | 1/2 |
| 26.067 | 2.011 | 10S | 1.030 | 3/4 |
| 26.067 | 2.087 | 40S | 1.071 | 3/4 |
| 26.067 | 3.091 | 80S | 2.023 | 3/4 |
| 33.040 | 2.077 | 10S | 2.013 | 1 |
| 33.040 | 3.038 | 40S | 2.054 | 1 |
| 33.040 | 4.055 | 80S | 3.029 | 1 |
| 101.060 | 5.074 | 40S | 13.078 | 3½ |
| 101.060 | 8.008 | 80S | 18.092 | 3½ |
| 114.030 | 3.005 | 10S | 8.050 | 4 |
| 114.030 | 6.002 | 40S | 16.032 | 4 |
| 114.030 | 8.056 | 80S | 22.067 | 4 |
| 114.030 | 13.0492) | 160 | 34.005 | 4 |
| 141.030 | 6.055 | 40S | 22.010 | 5 |
| 141.030 | 9.053 | 80S | 31.044 | 5 |
| 141.030 | 15.0882) | 160 | 49.087 | 5 |
| 168.028 | 3.04 | 10S | 14.004 | 6 |
| 168.028 | 7.011 | 40S | 28.069 | 6 |
| 168.028 | 10.097 | 80S | 43.021 | 6 |
| 168.028 | 14.027 | 120 | 54.075 | 6 |
| 168.028 | 18.0262) | 160 | 68.059 | 6 |
| 219.008 | 8.018 | 40S | 43.020 | 8 |
| 219.008 | 12.07 | 80S | 65.063 | 8 |
| 219.008 | 18.023 | 120 | 91.030 | 8 |
| 219.008 | 23.0012) | 160 | 112.097 | 8 |
Super uplex tube grade