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Applications:
Oil and Gas pipeline
Heat exchangers
Boiler
Instrument industry
Pressure vessel
Product material
Alloy 2205 (UNS S32305/S31803) 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.
Alloy 2205 duple steel 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.
|
Standard |
Grade |
CHEMICAL COMPOSITION(%) |
||||||||
|
C(max) |
Mn(max) |
P(max) |
S(max) |
Si(max) |
Ni |
Cr |
Mo |
N |
||
|
ASTM A789/790 |
S32205/2205 |
0.030 |
2.00 |
0.03 |
0.02 |
1.00 |
4.5-6.5 |
22.0-23.0 |
3.0-3.5 |
0.14-0.2 |
|
S31803 |
0.03 |
2.00 |
0.03 |
0.02 |
1.00 |
4.5-6.5 |
21.0-23.0 |
2.5-3.5 |
0.08-0.2 |
|
-
Toko duplex steel seamless pipe/tube products Forms:
Straight seamless tube with annealed and pickled duplex steel.
Coiled duplex steel seamless tube with bright annealed and pickled.
Duplex steel seamless tube with annealed and pickled.
-
Toko Typical Manufacturing standard:
ASTM A790 2205, ASTM A790 S31803
ASTM A790 2205/S31803, ASTM A790 S32205
|
A789 duplex steel seamless tube dimension range: |
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|
O.D. |
Thickness inch(mm) |
|
|
|||||||
|
Inch |
mm |
0.028(0.71) |
0.035(0.89) |
0.049(1.24) |
0.065(1.65) |
0.083(2.11) |
0.095(2.41) |
0.109(2.77) |
0.12(3.05) |
0.128(3.25) |
|
1/8 |
3.18 |
X |
X |
|
|
|
|
|
|
|
|
1/4 |
6.35 |
X |
X |
X |
X |
|
|
|
|
|
|
3/16 |
4.76 |
|
X |
X |
|
|
|
|
|
|
|
5/16 |
7.94 |
|
X |
X |
X |
|
|
|
|
|
|
3/8 |
9.53 |
|
X |
X |
X |
|
|
|
|
|
|
1/2 |
12.7 |
|
X |
X |
X |
X |
|
|
|
|
|
5/8 |
15.88 |
|
|
X |
X |
X |
X |
|
|
|
|
3/4 |
19.05 |
|
X |
X |
X |
X |
X |
X |
X |
X |
|
1 |
25.4 |
|
X |
X |
X |
X |
X |
X |
X |
|
|
11/4 |
31.75 |
|
|
|
X |
X |
X |
X |
X |
|
|
11/2 |
38.1 |
|
|
|
X |
X |
X |
X |
X |
|
|
2 |
50.8 |
|
|
|
X |
X |
X |
X |
X |
|
|
ASTM A789/789M Dimension tolerance for duplex steel seamless tube |
||
|
O.D. mm |
O.D. tolerance(mm) |
Thickness Tolerance |
|
＜12.7 |
-0.13,+0.13 |
-15%,+15% |
|
≥12.7-38.1 |
-0.13,+0.13 |
-10%,+10% |
|
≥38.1-88.9 |
-0.25,+0.25 |
-10%,+10% |
|
≥88.9-139.7 |
-0.38,+0.38 |
-10%,+10% |
|
≥139.7-203.2 |
-0.76,+0.76 |
-10%,+10% |
