ASTM A789 UNS S32205 Duplex Stainless Steel Seamless Tube

GNEE is a leading supplier and manufacturer of 2205 stainless steel tubes. ASTM A789 S32205 duplex stainless steel seamless tubes are specifically designed for heat exchangers and are widely used in boilers, superheaters, and heat exchangers. We offer 2205 duplex stainless steel tubes with various surface finishes, including annealed and pickled, bright annealed, polished, and mirror polished.

We supply high-quality S32205 duplex stainless steel seamless tubes (UNS S32205/2205) conforming to ASTM A789 standards, specifically designed for heat exchangers. S32205 duplex stainless steel seamless tubes have a minimum yield strength of 448 MPa and a minimum tensile strength of 621 MPa. Therefore, WNR 1.4462 boiler tubes are stronger than ordinary stainless steel. They possess excellent resistance to localized corrosion and can operate at temperatures up to 150 degrees Celsius without chloride stress corrosion cracking. In addition, we also offer various types of 2205 duplex stainless steel welded and seamless tubes. For pricing and product details, please contact us.Email: sales@gneestainless.com

 

What are the differences between ASTM A789 UNS S32205 and UNS S31803?

UNS S32205 is essentially an upgraded version of UNS S31803. Both are duplex stainless steels containing 22% chromium (Duplex 2205), but S32205 has more stringent chemical composition control, particularly with higher minimum levels of molybdenum (Mo) and nitrogen (N). Therefore, it exhibits superior resistance to pitting corrosion and stress corrosion cracking in more demanding chloride environments or other harsh conditions. S31803 is the original standard and is often certified concurrently as S32205 for general applications where the enhanced performance of S32205 is not required.

 

Pipe Range : 6.35 Mm OD to 273 Mm OD

Outer Diameter : 9.52 mm O.D to 50.80 mm O.D

Wall Thickness : 0.70 mm to 12.70 mm

Schedules : SCH10S,SCH40S,SCH80S,SCH160S

Length : up to 12 Meters Leg Length & Customed Length

Specifications : ASTM A688 / ASTM SA688 / ASTM A249 / ASTM A789/ ASTM A213 standard for heat exchanger

Types : Heat Exchanger, U Tubes

 

Physical Properties of ASTM A789 UNS S31803 Duplex Stainless Steel Tubes

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (μm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C ( J/kg.K)	Electrical Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	at 100°C	at 500°C
UNS S32205 / 2205	782	190	13.7	14.2	-	19	-	418	850

 

 

Mechanical Composition of ASTM A789 UNS S31803 Duplex Stainless Steel Tubes

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell C (HR C)	Brinell (HB)
UNS S32205 / 2205	621	448	25	31 max	293 max

 

 

Chemical Composition of ASTM A789 UNS S31803 Duplex Stainless Steel Tubes

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
2205 (UNS S31803)	Min Max	- 0.030	- 2.00	- 1.00	- 0.030	- 0.020	21.0 - 23.0	2.5 - 3.5	4.5 - 6.5	0.08 - 0.20
2205 (UNS S32205)	Min Max	- 0.030	- 2.00	- 1.00	- 0.030	- 0.020	22.0 - 23.0	3.0 - 3.5	4.5 - 6.5	0.14 - 0.20

 

Application Of ASTM A789 S32205 duplex steel seamless tube.

1. Oil and gas industry
2. Chemical processing industry
3. Power generation industry
4. Water treatment industry
5. Marine industry
6. Food processing industry

 

Test Required
Chemical Analysis
Mechanical Properties
Hardness Test
Flattening Test
Tension Test
FlaringTest
Intergranular Corrosion Test
Hydrostatic or Nondestructive Electric Test
Ultrasonic Test

All products of our products can be transported by various means, such as full container shipping, less than container load shipping, air freight, etc. Our company will formulate the optimal transportation plan for each order to save customers' procurement costs