 |
|
|
|
|
Product Details:
Payment & Shipping Terms:
|
| Materials: | S31803/2205 | Product Name: | Duplex Stainless Steel Tube |
|---|---|---|---|
| Standard: | ASME SA789 | O.D.: | 5/8"-2" |
| W.T.: | BWG18-BWG14 | Length MAX: | 12000MM Max. |
| Pipe Finish: | TIG Welded | Type: | Welded |
| Shape: | Round | Surface: | Bright Annealed |
| Application: | Heat Exchanger | Package: | Wooden Case |
| High Light: | duplex stainless steel pipe,duplex ss pipe |
||
ASTM A789 Duplex Stainless Steel S31803/2205 Seamless Tubing 19.05x1.2mm
Duplex 2205 stainless steel (both ferritic and austenitic) is used extensively in applications that require good corrosion resistance and strength. The S31803 grade stainless steel has undergone a number of modifications resulting in UNS S32205, and was endorsed in the year 1996. This grade offers higher resistance to corrosion.
At temperatures above 300°C, the brittle micro-constituents of this grade undergo precipitation, and at temperatures below -50°C the micro-constituents undergo ductile-to-brittle transition; hence this grade of stainless steel is not suitable for use at these temperatures.
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 those of an austenitic alloy (ease of fabrication and corrosion resistance).
Usage of 2205 Duplex stainless steel should be limited to temperatures below 600° F. Extended elevated temperature exposure can embrittle 2205 stainless.
2205 Stainless Steel is far superior to standard marine grade 316 and 316L.
2205 Stainless Steel has been developed over the last 10-20 years by metallurgists that required a stainless that was not only stronger than standard marine grade 316, but offered much better corrosion resistance. (2205 is commonly used for marine propeller shafts.)
2205 Stainless achieves almost twice the corrosion resistance to ordinary 316. This is due to added levels of Nickel, Chromium, Molybdenum and Nitrogen.
Specifications:
UNS S31803
ASME SA-182 (F51), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F51),A240, A276, A479, A789, A790, A815, A928, A988
SAE J405
UNS S32205
ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F60), A240, A276, A479, A480, A798, A790, A815, A928, A988
SAE J405
Specifications of Duplex Stainless Steel Welded Tube
1. Standard: ASTM ASME
2. Grade: 630 / 631 / 2205 / 2507 / 17-4PH
ASTM A789, ASTM A790, ASTM A450, ASTM A530,
GB/T 14976, GB/T 14975, GB/T 13296, etc
3. OD: 8mm-1000mm
4. Wall thickness: 0.3mm-30mm
5. Length: max.18000mm or as demand
6. Surface finish: Polishing (180#,220#,240#,320#400#,600#), Hairline, acid pickled, etc.
Features
| Specifications (ASTM/ASME) Duplex Stainless Steel Pipe | ||||
| Alloy | UNS Designation | Material Specification |
Tubing Specification |
Pipe Specification |
| 2205 | S31803/S32205 | A 240/SA-240 | A 270 | A 790/SA-790 |
| A 789/SA-789 | A928/SA928 | |||
Chemical Compositions:
| Chemical Composition (%) Duplex Stainless Steel Pipe | ||
| Alloy | 2205 | 2205 |
| UNS Designation | S31803 | S32205 |
| Carbon (C) max. | 0.030 | 0.030 |
| Manganese (Mn) max. | 2.00 | 2.00 |
| Phosphorus (P) max. | 0.030 | 0.030 |
| Sulfur (S) max. | 0.020 | 0.020 |
| Silicon (Si) max. | 1.00 | 1.00 |
| Chromium (Cr) | 21.0 - 23.0 | 22.0 - 23.0 |
| Nickel (Ni) | 4.5 - 6.5 | 4.5 - 6.5 |
| Molybdenum (Mo) | 2.5 - 3.5 | 3.0 - 3.5 |
| Nitrogen (N) | 0.08 - 0.20 | 0.14 - 0.20 |
| Iron (Fe) | Balance | Balance |
| Steel grade | 45% MgCl at 155oC | 40% CaCl2 at 100oC | 40% CaCl2 at 100oC, 0.9 x Rp0.2 | 25% NaCl, pH 1.5, 106oC | 25% NaCl, 106oC | 1500 ppm Cl- at 100oC |
| 4307 | Probable | Probable | Probable | Probable | Probable | Probable |
| 4404 | Probable | Probable | Probable | Probable | Possible | Probable |
| 2201 | Probable | Not probable | Not probable | Not probable | Not probable | Not probable |
| 2304 | Probable | Not probable | Not probable | Not probable | Not probable | Not probable |
| 2404 | Probable | Possible | Not probable | Not probable | Not probable | Not probable |
| 2205 | Probable | Not probable | Not probable | Not probable | Not probable | Possible |
| 2507 | Probable | Not probable | Not probable | Not probable | Not probable | Not probable |
| 254 SMO | Probable | Not probable | Not probable | Not probable | Not probable | Not probable |
Contact Person: Will Ma
Tel: +86 13918539222
