| Type: | Round |
|---|---|
| Standard: | AISI, ASTM, DIN, JIS, GB |
| Composition: | Ferrous Steel Scrap |
| Technique: | Hot Rolled |
| Shape: | Round |
| Surface Treatment: | Black, Oiled |
| Samples: |
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| Customization: |
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JIADE Group Tube is a specialized Manufacturer of S31803 Tube and S31803 Pipe. ASTM A789 SA789 S31803 Tubes, S31803 Duplex Tube, S31803 Duplex Pipe, ASTM A790 S31803 Pipe, ASME SA 790 S31803 Pipe. S31803 Stainless Steel is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.
ASME SA789 S31803 Stainless Steel Tubes provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steel in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic stainless steel.The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy stress corrosion cracking resistance and high strength with austenitic alloy ease of fabrication and corrosion resistance.
Duplex Steel ASTM A789 S31803 is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steel. "Duplex" describes a family of stainless steel that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless steel. The structure of S31803 duplex stainless steel consists of austenitic pools surrounded by a continuous ferritic phase. In the annealing condition, S31803 contains approximately 40-50% ferrite. Often referred to as the workhorse grade, S31803 is the most widely used grade in the duplex stainless steel tube.
Usage of S31803 Stainless Steel Pipe should be limited to temperatures below 600 °F. Extended elevated temperature exposure can embrittle S31803 stainless steel.
EN-10216-5 1.4462 Composition %:
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 2,00 | max. 0,035 | max. 0,015 | 21,00 - 23,00 | 2,50 - 3,50 | 4,50 - 6,50 | 0,10-0,22 | - |
ASTM A789 ASTM A790 S32205 2205 Duplex Tubing Composition %:
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 2,00 | max. 0,030 | max. 0,020 | 22,00 - 23,00 | 3,0 - 3,5 | 4,5 - 6,50 | 0,14-0,20 | - |
ASTM A789 ASTM A790 S31803 Stainless Steel Tubing Composition %:
| C | Si | Mn | P | S | Cr | Mo | Ni | N | Cu |
| max. 0,03 | max. 1,00 | max. 2,00 | max. 0,030 | max. 0,020 | 21,00 - 23,00 | 2,5 - 3,5 | 4,50 - 6,50 | 0,08-0,20 | - |
| Tensile Strength | Yield Strength | ||||||||
| Alloy | UNS | Spec. | MPa | ksi | MPa | ksi | Elongation in 2 in. (min.) % | Grain Size Req. | Max. Hardness |
| Duplex 2205 | S32205 | A789, A790 | 655 | 95 | 485 | 70 | 25 | - | 290HBW, 30* HRC |
| Duplex S31803 | S31803 | A789, A790 | 620 | 90 | 450 | 65 | 25 | - | 290HBW, 30* HRC |
| Alloy | UNS | Spec. | Density kg/dm³ |
Modulus of Elasticity (x106 psi) | Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) | Thermal Conductivity (BTU-in/ ft2-h-°F) |
| Duplex 2205 | S32205 | A789, A790 | 7.8 | 27.5 | 7.6 | 180 |
| Duplex S31803 | S31803 | A789, A790 | 7.8 | 27.5 | 7.6 | 180 |
S31803 Stainless Steel Pipe Range
| Alloy | UNS Designation | Werkstoff NR. | Specifications* |
| 2205 | S31803 | 1.4462 | ASTM A789/ ASME SA789, ASTM A790 / ASMESA790, EN 10216 - 5 |
ASTM Standards:
A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
A1016/A1016M Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
SAE Standard:
SAE J 1086 Practice for Numbering Metals and Alloys (UNS)
S31803 Pipe Information
| Products | OD | Wall | Lengths and/or coils | Grades | OD | Wall | Lengths |
| Heat Exchanger Tubes & Condensers Tubes Specifications: ASTM A789 and ASME SA789 | 3/16″ (4.76 mm) to 12 " (323.85mm) Metric sizes available | 0.020″ (0.51 mm) to 0.220″ (5.59 mm) | Random or cut lengths up to Customer Required | Duplex 2205 | - | ±10% | - |
| 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 Hydrostatic Test. | Could be replaced by Hydrostatic Test. | EN 10246-3 |
In addition to the marking prescribed in Specification A1016/A1016M, the marking shall indicate whether the tubing is seamless or welded and the wall designation (average wall or minimum wall).
Lead time 10-15 days | 80% of output for export
Shipping Information
| FOB Port | Tianjin | ||||
|---|---|---|---|---|---|
| Weight per Unit | 1500.0 Kilograms | ||||
| HTS Code | 7304.41.90 00 | ||||
| Export Carton Dimensions L/W/H | 11.8 x 1.0 x 0.8 Meters | ||||
| Lead Time | 15-30 days | ||||
|---|---|---|---|---|---|
| Dimensions per Unit | 11.8 x 1.0 x 0.8 Meters | ||||
| Units per Export Carton | 25.0 | ||||
| Export Carton Weight | 1500.0 Kilograms | ||||
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