Ferritic / Austenitic Stainless Steel Pipe ASTM A790 S31200 Seamless Welded
ASTM A790 S31200 Stainless Steel Tube Seamless and Welded Ferritic / Austenitic Stainless Steel Pipe
Specifications
ASTM A790 covers seamless and straight-seam welded ferritic/austenitic stainless steel pipe intended for general-purpose applications.
UNS S31200 is a duplex stainless steel (DSS) grade, renowned for its excellent combination of corrosion resistance, mechanical strength, and weldability. It is widely specified in various industrial applications where both durability and resistance to harsh environments are critical. Below is a detailed overview of UNS S31200 stainless steel pipes, including their parameters, standards, specifications, equivalent grades, characteristics, and applications.
| American Standard | Standard Name |
| A 790 / SA 790 | Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe |
ASTM A790 S31200 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 |
| S31200 | 0.03 | 2 | 0.045 | 0.03 | 1 | 5.5–6.5 | 24.0–26.0 | 1.20–2.00 | 0.14–0.20 |
ASTM A790 S31200 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 | |
| S31200 | 100 [690] | 65 [450] | 25 | 280 | ... |
ASTM A790 S31200 Stainless Steel Tube Application
- Oil and Gas Industry
- Heat Exchanger Tubes
- Chemical Process Industry
- Petrochemical Industry
- Power Generation
- Marine and Offshore Applications
- Pulp and Paper Industry
- Pollution Control and FGD Systems
ASTM A790 S31200 Stainless Steel Tube Packing & Loading
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