ASTM A790 UNS S31500 Stainless Steel Seamless Tube For Feedwater Heater Tubes
ASTM A790 UNS S31500 Stainless Steel Tube For Feedwater Heater Tubes
Specifications
ASTM A790 covers seamless and straight-seam welded ferritic/austenitic stainless steel pipe intended for general-purpose applications.
ASTM A790 UNS S31500 stainless steel pipe, also known as Alloy 315 SS pipe, is a versatile austenitic-ferritic duplex stainless steel product designed to balance the advantages of both austenitic and ferritic stainless steels. It is widely recognized for its excellent corrosion resistance, moderate strength, and good weldability, making it suitable for various industrial applications. Below is a detailed introduction covering its parameters, standards, specifications, similar grades, characteristics, and applications.
| American Standard | Standard Name |
| A 790 / SA 790 | Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe |
ASTM A790 UNS S31500 Stainless Steel Tube Chemical Composition
(Sources American Standard A790 / A790M TABLE 2 Chemical Requirements)
| UNS Designation A | C | Mn | P | S | Si | Ni | Cr | Mo | N |
| S31500 | 0.03 | 1.2-2.0 | 0.03 | 0.03 | 1.4-2.00 | 4.3–5.2 | 18.0–19.0 | 2.50–3.00 | 0.05–0.1 |
ASTM A790 UNS S31500 Stainless Steel Tube Mechanical Properties
(Sources American Standard A790 / A790M TABLE 3 Tensile and Hardness Requirements)
| UNS Designation | Tensile strength, | Yield strength, | Elongation | Hardness, max | |
| min, | min | in 2 in. or 50 | |||
| ksi[MPa] | ksi[MPa] | mm, min,% | HBW | HRC | |
| S31500 | 92 [630] | 64 [440] | 30 | 290 | 30 |
ASTM A790 UNS S31500 Stainless Steel Tube Application
- Oil and Gas Industry
- Flowlines and Process Piping
- Chemical Process Industry
- Process Piping and Vessel Internals
- Power Generation
- Feedwater Heater Tubes
- Auxiliary Cooling Systems
- Water and Wastewater Treatment
- Pulp and Paper Industry
- Bleach Plant Washers and Piping
- Process Tanks and Ducting
- Marine and Offshore
ASTM A790 UNS S31500 Stainless Steel Tube Packing & Loading
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