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Applications:
Oil and Gas pipeline
Heat exchangers
Boiler
Chemical process industries, heat exchangers, vessels, and piping
Desalination plants, high pressure RO-plant and seawater piping
Offshore platforms
Product material
Alloy 2507 is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel designed for demanding applications that require exceptional strength and corrosion resistance, such as chemical processes, petrochemical, and seawater equipment. The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity and a low coefficient of thermal expansion. The high chromium, molybdenum, and nitrogen levels provide excellent resistance to pitting, crevice, and general corrosion.
he impact strength is also high. Alloy 2507 is not recommended for applications that require long exposures to temperatures above 300℃ because of the risk of a reduction in toughness.
|
Standard |
Grade |
CHEMICAL COMPOSITION(%) |
|||||||||
|
C(max) |
Mn(max) |
P(max) |
S(max) |
Si(max) |
Ni |
Cr |
Mo |
N |
Cu(max) |
||
|
ASTM A789/790 |
S32750/2507 |
0.03 |
1.2 |
0.035 |
0.02 |
0.8 |
6.0-8.0 |
24.0-26.0 |
3.0-5.0 |
0.24-0.32 |
0.5 |
-
Toko duplex steel seamless pipe/tube products Forms:
Straight duplex steel 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 2507, ASTM A790 S32750
ASTM A790 2507/S32750
|
A789 duplex steel seamless tube dimension range: |
||||||||||
|
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% |
