Duplex Stainless Steel Seamless Tube S31803 / S32205 / S32750 /
1.4410 / 1.4462
Duplex Stainless Steel Pipe S31803 / S32205 / S32750 / 1.4410 /
1.4462 Seamless Tube
Our duplex and stainless steel tubes can easily be welded and
transformed into different structures.
RANGE
6.35 mm OD upto 254 mm OD in 0.6 TO 20 mm thickness.
ERW / Welded tubes in round .
We offer Stainless steel supplies and stainless steel supply items
for all stainless steel tube sizes. We are leading stainless steel
tube suppliers, stainless steel tubing suppliers.
2205 is a duplex (austenitic-ferritic) stainless steel containing
about 40 - 50% ferrite in the annealed condition. 2205 has been a
practical solution to chloride stress corrosion cracking problems
experienced with 304/304L or 316/316L stainless. The high chromium,
molybdenum and nitrogen contents provide corrosion resistance
superior to 316/316L and 317L stainless in most environments. 2205
is not suggested for operating temperatures above 600°F.
The design strength of 2205 is significantly higher than 316/316L,
often permitting lighter wall construction. 2205 has good notch
impact toughness down to temperatures below - 40°F.
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
Features
- High resistance to chloride stress corrosion cracking
- Chloride pitting and crevice corrosion resistance superior to 317L
stainless
- Good general corrosion resistance
- High strength
- Good sulfide stress corrosion resistance
- Useful up to 600°F
Applications
- Chemical process vessels, piping, and heat exchangers
- FGD scrubber systems
- Pulp mill digesters, bleach washers, chip presteaming vessels
- Food process equipment
- Oil field piping, heat exchangers
Chemical Composition, %
Cr | Ni | Mo | C | N |
|---|
| 22.0-23.0 | 4.50-6.50 | 3.00-3.50 | .030 Max | 0.14-0.20 |
Mn | Si | P | S | Fe |
|---|
| 2.00 Max | 1.00 Max | .030 Max | .020 Max | Balance |
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 |
