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Silver Tube is one of the leading manufacturing houses & dealers of Super Duplex Stainless Steel UNS S32750 Tubes, a super duplex stainless steel with higher alloy content, thus making it superior to 2205 in corrosion resistance and strength. The processing with Stainless Steel UNS S32750 Seamless Tubes is a mechanical processing of the material, which results in a significantly lower unintended deformation and increased hardness for the existing structure, such as the thermal cutting. Applications of Stainless Steel UNS S32750 Welded Tubes are Oil and gas industry equipment, offshore platforms, heat exchangers, process and service water systems, fire-fighting systems, injection, and ballast water systems. In addition, stainless steel UNS S32750 EFW Tubes have excellent resistance to uniform pitting, crevice corrosion, and chloride stress corrosion cracking. Meanwhile, in dilute sulphuric acid contaminated with chloride ions, 2507 Stainless Steel UNS S32750 ERW Tubes has better corrosion resistance than SS 904L, which is specially designed to resist pure sulphuric acid.
The machined work piece has a homogeneous structure even at the edge, which does not change in the continuation of UNS S32750 Stainless Steel Tubes. The high molybdenum and chromium content of Super Duplex UNS S32750 Tubes makes it very resistant to unchanging corrosion by organic acids such as acetic and formic acid. In addition, because the low carbon content greatly lowers the risk of carbide precipitation at the grain boundaries during heat treatment, these Stainless Steel 2507 Tubes are highly resistant to carbide-related intergranular corrosion.
| Specifications | ASTM A789 / ASME SA789 |
| Dimensions | ASTM, ASME and API. |
| Schedule | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Type | Seamless / ERW / Welded / Fabricated / CDW |
| Seamless Tubes Sizes | 1/2" NB - 8" NB |
| Welded Tubes Sizes | 6" NB - 24" NB |
| Length | Single Random, Double Random & Required Length |
| End | Plain End, Beveled End, Treaded |
| Outer Diameter | 6.0-630mm |
| Thickness | 0.3mm – 50 mm |
| STANDARD | UNS | WERKSTOFF NR. |
| Super Duplex 2507 | S32750 | 1.4410 |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| 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 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness Max | |
| HB | HRB | ||||
| S32750 | 795 | 550 | 15 | 310 | 32 |
| Density | Modulus of Elasticity | Coefficient of Thermal Expansion 68-212°F/°F |
Thermal Conductivity | Heat Capacity | Electrical Resistivity |
| lb/in3 | psi x 106 | x10-6/°F | Btu/h ft °F | Btu/lb/°F | W-in x 10-6 |
| 0.28 | 29 | 7.2 | 8.7 | 0.12 | 31.5 |
| Dimensions | Wall | Weight per | Dimensions | Wall | Weight per | |
|---|---|---|---|---|---|---|
| (mm) | (mm) | metre (kg) | (mm) | (mm) | metre (kg) | |
| 12.7 x 12.7 | 1.20 | 0.44 | 40 x40 | 1.20 | 1.49 | |
| 12.7 x 12.7 | 1.50 | 0.55 | 40 x40 | 1.50 | 1.85 | |
| 15 x 15 | 1.20 | 0.53 | 40 x40 | 2.00 | 2.45 | |
| 15 x 15 | 1.50 | 0.65 | 40 x40 | 3.00 | 3.75 | |
| 20 x 20 | 1.20 | 0.71 | 50 x50 | 1.50 | 2.32 | |
| 20 x 20 | 1.50 | 0.88 | 50 x50 | 2.00 | 3.08 | |
| 20 x 20 | 2.00 | 1.19 | 50 x50 | 3.00 | 4.65 | |
| 25 x 25 | 1.20 | 0.92 | 60 x60 | 2.00 | 3.71 | |
| 25 x 25 | 1.50 | 1.14 | 60 x60 | 3.00 | 5.49 | |
| 25 x 25 | 2.00 | 1.49 | 70 x70 | 3.00 | 6.53 | |
| 25 x 25 | 3.00 | 2.20 | 80 x80 | 2.00 | 4.98 | |
| 30 x 30 | 1.20 | 1.10 | 80 x80 | 3.00 | 7.53 | |
| 30 x 30 | 1.50 | 1.37 | 100 x 100 | 2.00 | 6.40 | |
| 30 x 30 | 2.00 | 1.84 | 100 x 100 | 3.00 | 9.53 | |
| 30 x 30 | 3.00 | 2.72 | ||||
| O.D. Inches | Wall Thickness Inches | O.D. +/- Inches |
|---|---|---|
| 1/2" to 1" incl. | .025 to .065 | .005 |
| Over .065 to .134 | .010 | |
| 1 to 1-1/2" incl. | .025 to .065 | .008 |
| Over .065 to .134 | .010 | |
| 1-1/2" to 2" incl. | .025 to .049 | .010 |
| Over .049 to .083 | .011 | |
| Over .083 to .148 | .012 | |
| 2" to 2-1/2" incl. | .032 to .065 | .012 |
| Over .065 to .109 | .013 | |
| Over .109 to .165 | .014 | |
| 2-1/2" to 3-1/2" incl. | .032 to .165 | .014 |
| Over .165 to .220 | .020 | |
| 3-1/2" to 5" incl. | .083 to .165 | .020 |
| Over .165 to .220 | .025 |
| GAUGE | THICKNESS RANGE (INCH) | TYPICAL VALUE (INCH) |
|---|---|---|
| 22 | 0.025 - 0.029 | 0.028 |
| 20 | 0.031 - 0.035 | 0.035 |
| 19 | 0.038 - 0.042 | 0.042 |
| 18 | 0.044 - 0.049 | 0.049 |
| 17 | 0.053 - 0.058 | 0.058 |
| 16 | 0.060 - 0.065 | 0.065 |
| 15 | 0.066 - 0.074 | 0.072 |
| 14 | 0.075 - 0.085 | 0.083 |
| 13 | 0.087 - 0.097 | 0.095 |
| 12 | 0.101 - 0.111 | 0.109 |
| 11 | 0.112 - 0.122 | 0.12 |
| 10 | 0.126 - 0.136 | 0.134 |
| 9 | 0.140 - 0.150 | 0.148 |
| 8 | 0.157 - 0.167 | 0.165 |
| 7 | 0.175 - 0.185 | 0.18 |
| Size Range | Standard Tolerances | ||||||
|---|---|---|---|---|---|---|---|
| Form | OD | Wall | Lengths and/or coils | Grades | OD | Wall | Lengths |
| Pressure & Corrosion Tubing
Meets or exceeds requirements for welded Specification: ASTM-A789 |
1/16" (1.59 mm) - 4" (101.6 mm)
Metric sizes also available |
0.010" (0.25 mm) - 0.220" (5.59 mm) | Random or cut lengths up - 40' (12.2 m)
Coils to 1-1/2" OD |
Super Duplex 2507 | <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) |
±10% | Randoms up to +2" (50.8 mm)
Cuts +1/8" (3 mm) -0" Coils to 80,000' (24,384 m) |
| Subsea Umbilical Tubing
Specifications: ASTM-A789 and ASTM-A790 |
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) |
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