2507 Super Duplex Tubing | 2507 Super Duplex Pipe
Guanyu Tube is specialized manufacturer of 2507 Super Duplex Tubing and 2507 Super Duplex Pipe. 2507 is super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion.
S32750 Super Duplex Pipe have enhanced pitting and crevice corrosion resistance when compared with 300-series austenitic stainless steel tube or conventional duplex alloys. This can be attributed to the enhanced levels of chromium, molybdenum and nitrogen found in these materials. Alloy 2507 is the most common “super” duplex grade.
Usage of S32750 Stainless Steel should be limited to applications below 6000°F (3160°C). Extended elevated temperature exposure can reduce both the toughness and corrosion resistance of alloy 2507. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.
S32750 Super Duplex Pipe possesses excellent mechanical properties. Often a light gauge of S32750 Stainless Steel can be used to achieve the same design strength of a thicker nickel alloy. The resulting saving in weight can reduce the overall cost of fabrication.
ASTM A789 S32750 Pipe Chemical Composition
| C % |
Si % |
Mn % |
P % |
S % |
Cr % |
Ni % |
Mo % |
N % |
Cu % |
| 0.03 max |
0.8 max |
1.2 max |
0.035 max |
0.02 max |
24.0-26.0 |
6.0-8.0 |
3.0-5.0 |
0.24-0.32 |
0.50 max |
EN 10216-5 1.4507 Chemical Composition
| C % |
Si % |
Mn % |
P % |
S % |
Cr % |
Ni % |
Mo % |
N % |
Cu % |
| 0.030 max |
0.70 max |
2.00 max |
0.035 max |
0.015 max |
24.0-26.0 |
5.50-7.50 |
2.70-4.00 |
0.15-0.30 |
1.00-2.50 |
| Tensile Strength, Mpa |
Yield Strength, MPa |
Elongation, % |
Hardness, HB |
| 800 min |
550 min |
15 min |
310 max |
| |
|
|
|
|
|
| Alloy |
UNS |
Spec. |
Modulus of Elasticity (x106 psi) |
Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) |
Thermal Conductivity (BTU-in/ ft2-h-°F) |
| Super Duplex 2507 |
S32950 |
A789, A790 |
— |
— |
— |
| Super Duplex 2507 |
S32750 |
A789, A790 |
27.5 |
7.2 |
98 |
| Standard |
ASTM A789, ASME SA789 |
| Equivalent Standards |
DIN 17458, GOST 9941-81, GOST 9940-81, EN 10216-5, ASTM A790, ASME SA790, DIN 17456 |
| Material |
S32750 2507 Pipe |
| Equivalent Materials |
X2CrNiMoN25-7-4, 1.4410, SAF 2507, F53 |
| Related Products |
stainless steel tube, stainless steel pipe, heat exchanger tube, ASTM A789 |
Standard
Item |
ASTM A789 |
ASTM A790 |
EN 10216-5 |
|
Grade |
S31803 S32205 S32750 |
S31803 S32205 S32750 |
1.4301 1.4307 1.4948 1.4315
1.4401 1.4404 1.4571 1.4541
1.4941 1.4845 1.4449 1.4438
1.4550 1.4912 1.4462 1.4410 |
Yield Strength
(Mpa) |
≥450；≥485；≥550 |
≥450；≥450；≥550 |
--- |
Tensile Strength
(Mpa) |
≥620；≥655；≥800 |
≥620；≥655；≥800 |
--- |
|
Elongation(%) |
≥25；≥25；≥15 |
≥25；≥25；≥15 |
--- |
| Hydrostatic Test |
The Hydrostatic Test shall be in accordance with ASTM A1016.
Could be replaced by ECT. |
The Hydrostatic Test shall be in accordance with ASTM A999.
Could be replaced by ECT. |
The hydrostatic test shall be carried out at a test pressure of 7MPa or
at a test pressure calculated using the following formula
P=2St/D S=70%Rp0.2 |
|
Intergranular Corrosion Test |
Usually use Pitting Corrosion Test. |
Usually use Pitting Corrosion Test. |
EN ISO 3651-2 (Optional) |
| Eddy Current Test |
Could be replaced by HT. |
Could be replaced by HT. |
EN 10246-3 |
O.D. Tolerance
(mm) |
O.D. |
O.D.Tolerance |
O.D. |
O.D.Tolerance |
O.D. Tolerance Class |
|
D<12.7 |
+/-0.13 |
10.3≤D≤48.3 |
+0.40/-0.80 |
D3 |
+/-0.75% or
+/-0.3mm |
|
12.7≤D<38.1 |
+/-0.13 |
48.3<D≤114.3 |
+0.80/-0.80 |
| whichever is the greater |
|
38.1≤D<88.9 |
+/-0.25 |
114.3<D≤219.1 |
+1.60/-0.80 |
D4 |
+/-0.5% or
+/-0.1mm |
|
88.9≤D<139.7 |
+/-0.38 |
219.1<D≤457.0 |
+2.40/-0.80 |
| whichever is the greater |
W.T. Tolerance
(mm) |
O.D. |
W.T.Tolerance |
O.D. |
W.T.Tolerance |
W.T. Tolerance Class |
| D<12.7 |
+/-15% |
10.3≤D≤73.0 |
+20.0%/-12.5% |
T3 |
+/-10% or
+/-0.2mm |
| 12.7≤D<38.1 |
+/-10% |
88.9≤D≤457.0
t/D ≤5% |
+22.5%/-12.5% |
whichever is the greater |
| 38.1≤D<88.9 |
+/-10% |
T4 |
+/-7.5% or
+/-0.15mm |
88.9≤D≤457.0
t/D >5% |
+15.0%/-12.5% |
| 88.9≤D<139.7 |
+/-10% |
| whichever is the greater |
The high chromium and molybdenum content of Super Duplex makes it extremely resistant to uniform corrosion by organic acids like formic and acetic acid. Super Duplex also provides excellent resistance to inorganic acids, especially those containing chlorides.
•High resistance to chloride stress corrosion cracking
•High Strength
•Superior resistance to chloride pitting and crevice corrosion
•Good general corrosion resistance
•Suggested for applications up to 6000 F
•Low rate of thermal expansion
•Combination of properties given by austenitic and ferritic structure
•Good weldability and workability
Heat exchangers, tubes and pipes for production and handling of gas and oil,
Heat exchangers and pipes in desalination plants,
Mechanical and structural components,
Power industry FGD systems,
Pipes in process industries handling solutions containing chlorides,
Utility and industrial systems, rotors, fans, shafts and press rolls where the high corrosion fatigue strength can be utilized,
Cargo tanks, vessels, piping and welding consumables for chemical tankers.
High-strength, highly resistant wiring.
|
Sizes |
|
Standard Tolerances |
| Products |
OD |
Wall |
Lengths and/or coils |
Grades |
OD |
Wall |
Lengths |
| Pressure & Corrosion Tubing
Heat Exchanger Tubes & Condensers Tubes
Specification: ASTM A789, ASME SA 789 |
0.5" (6 mm) to 12 " (323.85 mm)
Metric sizes available
| 0.020" (0.51 mm) to 1.312 " (33.325 mm) |
Random or cut lengths up to 40' (12.2 m)
Coils to 1-1/2" OD |
Super Duplex 2507 |
- |
±10% |
- |
| Subsea Umbilical Tubing
Specifications: ASTM-A789 and ASTM-A790 ASME SA790 |
3/8" (9.53 mm) to 1-1/2" (38.1 mm) |
0.039" (0.99 mm) to 0.125" (3.18 mm) |
Cut lengths to 60' (18.3 m)
Coils to 1-1/2" OD* |
Super Duplex 2507 |
±0.005" (0.127 mm) |
±10% |
Coils to 80,000' (24,384 m) |
|
Size:1/4″ × 0.035″ |
|
Size:3/8″ × 0.035″ |
|
Size:1/2″ × 0.035″ |
|
Size:5/8″ × 0.035″ |
|
Size:3/4″ × 0.035″ |
|
Size:1″ × 0.035″ |
|
Size:5/16″ × 0.035″ |
|
Size:1/4″ × 0.049″ |
|
Size:3/8″ × 0.049″ |
|
Size:1/2″ × 0.049″ |
|
Size:5/8″ × 0.049″ |
|
Size:3/4″ × 0.049″ |
|
Size:1″ × 0.049″ |
|
Size:1/4″ × 0.065″ |
|
Size:3/8″ × 0.065″ |
|
Size:1/2″ × 0.065″ |
|
Size:5/8″ × 0.065″ |
|
Size:3/4″ × 0.065″ |
|
Size:1″ × 0.065″ |
|
Size:1″ × 0.120″ |
Visual Testing
100% PMI Testing
Hydraustatic Testing
Plywood Cases Package
2507 Super Duplex Pipe
General Properties
Application
Standards
Chemical Composition
Resistance to Corrosion
Physical Properties
Mechanical Properties
Welding
Processing
Export Record:
Export ASTM A790 S32750 Stainless Steel Seamless Tubes finished in Pickling Annealing. Size with Outside Diameter in 1 INCH (33.4mm), Wall Thickness in SCH10 2.77mm Length in 8000mm. Total in 3000KGS.
Related References:
ASTM A789 ASME SA 789 S31803 S32205 S32101 S32750 S32760 S32304 S31500 S31260 Seamless Tubes
ASTM A790 ASME SA790 S31803 S32205 S32101 S32750 S32760 S32304 S31500 S31260 Seamless Pipe
EN 10216-5 1.4462 1.4362 1.4162 1.4410 1.4501 Seamless Tubes
1. Duplex Stainless Steel Pipe
2. Duplex Stainless Steel
3. Super-Duplex Stainless Steel
4. Principle of Duplex Stainless Steel
5. How the Austenite Ferrite Balance Achieved
6. Corrosion Resistance of Duplex Stainless Steel
7. Stress Corrosion Cracking SCC of Duplex Stainless Steel
8. Barrier to Using Duplex Stainless Steel
9. Duplex Stainless Steel Grades Comparison Table
10. S32101 | S32205/S31803 | S32304 | S32750 | S32760
11. ASTM A789/A789M
12. ASTM A 790/A 790M
13. Duplex Stainless Steel Pipe
14. Austenitic-Ferritic Stainless Steel Pipe
15. Super-Duplex Stainless Steels and their characteristics
16. 2507 S32750 Duplex Steel Pipe
17. S31803 Stainless Steel Pipe
18. S32304(1.4362) Duplex Steel
19. S32205 Stainless Steel Pipe
20. 1.4462 Stainless Steel Pipe
21. Use of stainless steel under high temperature condition refer table
22. ASTM A789 S31803 Duplex Stainless Steel Pipe
23. ASTM A789 S32205 Duplex Stainless Steel Pipe
24. Duplex Stainless Steel Pipe Specification
25. Export ASME SA789 S32750 Stainless Steel Bright Annealing Tube
26. Export ASME SA789 S32750 Stainless Steel Bright Annealing Tube
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