UNS S32205 duplex stainless steel is a material with a ferrite and austenite structure.Containing approximately 22% chromium 3% molybdenum, and 5 to 6% nickel. This type of stainless steel is known for its excellent mechanical properties and corrosion resistance. The UNS S32205 duplex stainless steel pipe has been widely used due to its excellent performance.
What Is ASTM A790?
ASTM A790 is a standard specification for duplex stainless steel pipe. It covers the standard specifications for seamless and welded duplex (austenitic ferrite) stainless steel pipes. This standard requires that the chemical composition and mechanical properties of duplex stainless steel pipes must meet the specified range.
The ASTM A790 standard has important guiding significance for the production and use of duplex stainless steel pipes, ensuring that their quality and performance can meet the needs of specific industries. ASTM A790 standard includes UNS S31803, UNS S32205, UNS S32750, and UNS S32760 duplex stainless steel materials.
Stainless Steel Pipe Specification
Duplex Stainless Steel Pipe Schedule Chart
Feature Of UNS S32205 Duplex Stainless Steel Pipe
Chemical Composition
| C | Mn | P | S | Si | Ni | Cr | Mo | N | |
| MIN | 4.50 | 22.00 | 3.00 | 0.14 | |||||
| MAX | 0.03 | 2.00 | 0.030 | 0.020 | 1.00 | 6.50 | 23.00 | 3.50 | 0.20 |
In terms of corrosion resistance, UNS S32205 duplex stainless steel pipes have better corrosion resistance than 316L and 317L in most environments. Its corrosion resistance is mainly attributed to its chromium, molybdenum, and nitrogen content. This material has very high corrosion resistance even under acidic conditions, so it is widely used in fields such as the chemical industry.
Mechanical Properties
| MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | HARDNESS |
| ASTM A790 UNS S32205 | 655 min | 450 min | 25 min | 290max |
Inspection Of Duplex Stainless Steel Pipe
We provide customers with product factory quality inspection services. Before leaving the factory, UNS S32205 duplex stainless steel pipes need to undergo outer diameter measurement, wall thickness measurement, length measurement, and spectral testing to ensure that each batch of steel pipes produced meet standard requirements.
Package Of UNS S32205Duplex Stainless Steel Pipe
In order to ensure the safety of goods during transportation, UNS S32205 duplex stainless steel pipe are generally equipped with plastic caps at the ends and then wrapped externally with plastic cloth. This helps to prevent the surface of stainless steel pipes from being worn, scratched, and contaminated, while also providing moisture, dust, and corrosion protection.
