Heat Exchanger ASTM Stainless Steel Pipe Seamless ASTM A790 UNS S32750
ASTM A790 UNS S32750 Stainless Steel Tube Heat Exchanger Tubes
Specifications
ASTM A790 covers seamless and straight-seam welded ferritic/austenitic stainless steel pipe intended for general-purpose applications.
ASTM A790 UNS S32750(Duplex 2507) is a super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel, it can be the Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.
| American Standard | Standard Name |
| A 790 / SA 790 | Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe |
ASTM A790 UNS S32750 Stainless Steel Tube Chemical Composition
(Sources American Standard A790 / A790M TABLE 2 Chemical Requirements)
| UNS Designation A | Type | C | Mn | P | S | Si | Ni | Cr | Mo | N | Cu |
| 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 |
ASTM A790 UNS S32750 Stainless Steel Tube Mechanical Properties
(Sources American Standard A790 / A790M TABLE 3 Tensile and Hardness Requirements)
| UNS Designation | Type | Tensile strength, | Yield strength, | Elongation | Hardness, max | |
| min, | min | in 2 in. or 50 | ||||
| ksi[MPa] | ksi[MPa] | mm, min,% | HNW | HRC | ||
| S32750 | 2507 | 116 [800] | 80 [550] | 15 | 300 | 32 |

ASTM A790 UNS S32750 Stainless Steel Tube Application
- Oil and Gas Industry
- Flowlines and Risers
- Downhole Tubing
- Process Piping
- Heat Exchanger Tubes
- Chemical and Petrochemical Processing
- Process Piping and Tubing
- Marine and Offshore Engineering
- Seawater Cooling Systems
- Desalination Plants
- Shipbuilding
- Power Generation
- Feedwater Heater Tubes
- Condenser Tubes
- Flue Gas Desulfurization (FGD) Systems
- Pulp and Paper Industry
- Digester Tubes and Piping
- Mechanical and Structural Applications
- High-Pressure Hydraulic Lines
- Instrumentation Tubing for Corrosive Environments
ASTM A790 UNS S32750 Stainless Steel Tube Packing & Loading


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