The ASTM SA 789 specification covers standard requirements meant for various grades of stainless steel tubing such as the SA 789 UNS S32205 for different applications. Generally, these SA789 S32205 tubes have a certain requirement in terms of nominal wall thickness, general corrosion resistance, with particular emphasis being placed on the alloys ability to resist SCC or stress corrosion cracking. Although this stainless steel duplex grade S32205 Welded Pipe can be used at high temperatures, they are susceptible to becoming brittle if used for prolonged periods at extremely elevated temperatures. Typically, most manufacturers recommend using the UNS S32205 Pipe at a temperature not more than 300 °C.
Table of Content
Heat and product analyses which has been performed on the stainless steel Duplex S32205 Seamless Pipe must conform to the required chemical composition as mentioned in the ASTM SA 789 specification. Chemically, the composition of Duplex grade S32205 Stainless Steel Pipe contains elements such as carbon, manganese, phosphorus, nickel, chromium, copper, molybdenum, nitrogen, sulphur, silicon, and others in trace quantities. The three main alloying materials of all duplex grade stainless steel includes chromium, molybdenum, and nickel. These elements enhance the properties of this particular stainless steel grade. Since the tensile strength of the Duplex grade SA 789 UNS S32205 is higher than most conventional stainless steel grades, S32205 Pipe Suppliers can place orders for a light gauged product. An added benefit of lighter gauged product is that the fabrication for Duplex S32205 Pipe Price is lower.
All S32205 Stainless Steel Pipe need to be furnished in the heat treated condition. According to the ASTM SA 789 specification the alloy needs to be heated at specified temperature as well as maintain quench conditions as required. The final heat treatment is performed in a continuous furnace, or the heat treated alloy can be is obtained directly in a quenched condition after hot forming the SA 789 UNS S32205 pipe. The number of tubes of the same pr similar sizes which have been produced from the same heat in a lot shall be determined from the prearranged sizes of the tubes. The stainless steel SA 789 UNS S32205 material must conform to the prescribed tensile strength as well as hardness properties. Mechanical tests such as tension test, flaring test which is meant for seamless tubes or flange test i.e. meant for welded tubes, hardness test, and reverse flattening test as well have to be performed on the Duplex grade S32205 Stainless Steel Pipe. Each SA789 S32205 tube according to the ASTM SA 789 specification needs to also be subjected to either the non - destructive electric test or the hydrostatic test.
The ASTM A790 specification covers seamless as well as straight seam welded ferritic- austenitic such as the ASTM A790 UNS S32205 , or otherwise referred to as duplex category of stainless steel pipe. The ASTM A790 UNS S3 2205 specification pipes are meant for general corrosive environment application, particularly with emphasis placed on resistance to stress corrosion cracking. Since this duplex stainless steel grade A790 S32205 tends to resist chlorine ion containing soulutions, these pipes can be used in the marine industry. The Duplex UNS S32205 Pipe according to this specification must be manufactured by either the seamless or an automatic welding process. The specified A790 S32205 Pipe specifies that there will be no addition of filler metals to be used in the welding operation. Heat analysis of this duplex grade SA790 S32205 needs to be made in order to determine the percentages of the elements specified in that alloy. Several tests such as Tension tests, hardening tests, flattening tests as well as hydrostatic tests and non - destructive electric tests are conducted on the ASTM A790 UNS S32205. These tests have been administered to the Duplex S32205 Pipe in order that the pipe be made in such a manner that it conforms to the specified requirements.
ASTM / ASME Standards | ASTM A790 / ASME SA790 |
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EFW Pipe size | 5.0 mm - 1219.2 mm |
Pipe Schedule | SCH5, SCH10, SCH40, STD, SCH80, SCH160 |
Pipe Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
Pipe Form | Round, Square, Hollow, Rectangular, Hydraulic, Straight Pipes Etc. |
Pipe Length | Single Random, Double Random & Cut Length. |
End | Plain End, Beveled End, Treaded. |
Marking | All Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
Material Test Certificates (MTC) | Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2 |
Welded Tube Size | 6.35 mm OD To 152 mm OD |
Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
tubing wall thickness | 0.020" –0.220", (special wall thicknesses available) |
tube Length | Single Random, Double Random, Standard & Cut length |
Tube Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
tube Form | Round, Coil, Square, Rectangular, Boiler, Hydraulic, Straight or ‘U’ bent Tubes, Hollow, LSAW Tubes Etc. |
Tube Type | Seamless, ERW, EFW, Welded, Fabricated |
End | Plain End, Beveled End, Treaded |
Marking | All tubes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
ASME SA790 DIN 1.4462 Welded Pipe
UNS S32205 Boiler Tube
Duplex S32205 Heat Exchanger Tube
ASTM A790 UNS S32205 Welded Pipe
Duplex Steel S32205 ERW pipe
Duplex UNS S32205 Cold Drawn Tubes
ASTM A790 UNS S32205 Seamless Pipe
ASME SA790 UNS S32205 Square Tube
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
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 |
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 |
Grade | UNS, No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
BS | En | No | Name | ||||
2205 | S31803 / S32205 | 318S13 | – | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
Grade 2205 | 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 | 782 | 190 | 13.7 | 14.2 | – | 19 | – | 418 | 850 |
NPS Designator | Permissible Variations in Outside Diameter | |
---|---|---|
Over In. | Under In. | |
1/8 to 1-1/2, incl | 1/64 (0.015) | 1/32 (0.031) |
Over 1-1/2 to 4, incl | 1/32 (0.031) | 1/32 (0.031) |
Over 4 to 8, incl | 1/16 (0.062) | 1/32 (0.031) |
Over 8 to 18, incl | 3/23 (0.093) | 1/32 (0.031) |
SA789 S32205 UNS Seamless Pipes are supplied according to ANSI/ ASME B36.19.
WT = Pipe wall thickness
OD = Pipe outside diameter
Pipe OD mm |
Pipe WT mm |
in. | Sch | Kg/m |
---|---|---|---|---|
13.72 | 1.65 | 1/4 | 10S | 0.50 |
13.72 | 2.24 | 1/4 | 40S | 0.64 |
13.72 | 3.02 | 1/4 | 80S | 0.81 |
17.15 | 1.65 | 3/8 | 10S | 0.64 |
17.15 | 2.31 | 3/8 | 40S | 0.86 |
17.15 | 3.20 | 3/8 | 80S | 1.12 |
21.34 | 2.11 | 1/2 | 10S | 1.02 |
21.34 | 2.77 | 1/2 | 40S | 1.29 |
21.34 | 3.73 | 1/2 | 80S | 1.65 |
26.67 | 2.11 | 3/4 | 10S | 1.30 |
26.67 | 2.87 | 3/4 | 40S | 1.71 |
26.67 | 3.91 | 3/4 | 80S | 2.23 |
33.40 | 2.77 | 1 | 10S | 2.13 |
33.40 | 3.38 | 1 | 40S | 2.54 |
33.40 | 4.55 | 1 | 80S | 3.29 |
33.40 | 6.352) | 1 | 160 | 4.30 |
42.16 | 2.77 | 1¼ | 10S | 2.73 |
42.16 | 3.56 | 1¼ | 40S | 3.44 |
42.16 | 4.85 | 1¼ | 80S | 4.53 |
42.16 | 6.352) | 1¼ | 160 | 5.69 |
48.26 | 2.77 | 1½ | 10S | 3.16 |
48.26 | 3.68 | 1½ | 40S | 4.11 |
48.26 | 5.08 | 1½ | 80S | 5.49 |
60.33 | 2.77 | 2 | 10S | 3.99 |
60.33 | 3.91 | 2 | 40S | 5.52 |
60.33 | 5.54 | 2 | 80S | 7.60 |
60.33 | 8.742) | 2 | 160 | 11.29 |
73.03 | 3.05 | 2½ | 10S | 5.35 |
73.03 | 5.16 | 2½ | 40S | 8.77 |
73.03 | 7.01 | 2½ | 80S | 11.59 |
88.90 | 3.05 | 3 | 10S | 6.56 |
88.90 | 5.49 | 3 | 40S | 11.47 |
88.90 | 7.62 | 3 | 80S | 15.51 |
88.90 | 11.132) | 3 | 160 | 21.67 |
101.60 | 3.05 | 3½ | 10S | 7.53 |
101.60 | 5.74 | 3½ | 40S | 13.78 |
101.60 | 8.08 | 3½ | 80S | 18.92 |
114.30 | 3.05 | 4 | 10S | 8.50 |
114.30 | 6.02 | 4 | 40S | 16.32 |
114.30 | 8.56 | 4 | 80S | 22.67 |
114.30 | 13.492) | 4 | 160 | 34.05 |
141.30 | 6.55 | 5 | 40S | 22.10 |
141.30 | 9.53 | 5 | 80S | 31.44 |
141.30 | 15.882) | 5 | 160 | 49.87 |
168.28 | 3.4 | 6 | 10S | 14.04 |
168.28 | 7.11 | 6 | 40S | 28.69 |
168.28 | 10.97 | 6 | 80S | 43.21 |
168.28 | 14.27 | 6 | 120 | 54.75 |
168.28 | 18.262) | 6 | 160 | 68.59 |
219.08 | 8.18 | 8 | 40S | 43.20 |
219.08 | 12.7 | 8 | 80S | 65.63 |
219.08 | 18.23 | 8 | 120 | 91.30 |
219.08 | 23.012) | 8 | 160 | 112.97 |
1/8" IPS(.405"O. D.) | 3 1/2" IPS( 4.000"O. D.) |
---|---|
SCH 40, 80 | SCH 10, 40, 80, 160, XXH |
1/4" IPS(.540"O. D.) | 4" IPS(4.500"O. D.) |
SCH 10, 40, 80 | SCH 10, 40, 80, 160, XXH |
3/8" IPS(.675"O. D.) | 5" IPS( 5.563"O. D.) |
SCH 10, 40, 80 | SCH 10, 40, 80, 160, XXH |
1/2" IPS(.840"O. D.) | 6" IPS(6.625"O. D.) |
SCH 5, 10, 40, 80, 160, XXH | SCH 5, 10, 40, 80, 120, 160, XXH |
3/4" IPS(1.050"O. D.) | 8 ” IPS(8.625"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH 5, 10, 40, 80, 120, 160, XXH |
1" IPS:(1.315′O. D.) | 10" IPS(10.750"O. D.) |
SCH 5, 10, 40, 80, 160, XXH | SCH 10, 20, 40, 80 (.500), TRUE 80(.500) |
1-1/4" IPS(1.660"O. D.) | 12" IPS(12.750"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH 10, 20, 40(.375), TRUE40(.406), SCH80(.500) |
1-1/2" IPS(1.900"O. D.) | 14" IPS(14.000"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH10 (.188), SCH40 (.375) |
2" IPS(2.375"O. D.) | 16" IPS(16.000"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH10(.188), SCH40(.375) |
2 1/2" IPS(2.875"O. D.) | 18" IPS (18.000"O. D.) |
SCH 10, 40, 80, 160, XXH | SCH-40 (.375) |
3" IPS( 3.500"O. D.) | |
SCH 5, 10, 40, 80, 160, XXH |
Duplex S32205 UNS Rectangular Pipe | Small diameter Duplex SS UNS S32205 pipe |
UNS S32205 Stainless Steel Hexagonal Pipe | UNS S32205 Stainless Steel Pipe material |
Duplex SS UNS S32205 Bush Hex Pipe | DSS UNS S32205 Clad Pipe |
SA789 S32205 UNS Seamless Pipe | A790 S32205 UNS Thick Wall Pipe |
UNS S32205 DSS CDW Pipe | Cold Drawn UNS S32205 Seamless Pipe |
UNS S32205 Duplex Steel Welded Pipe | UNS S32205 Duplex Large Pipe |
A790 S32205 UNS ERW Pipe | Schedule 5S SA 789 UNS S32205 Pipe |
SA789 S32205 UNS Cold Drawn Pipe | Cold Drawn UNS S32205 Welded Pipe |
UNS S32205 Duplex EFW Pipe | Schedule 40 Duplex UNS S32205 Pipe |
SA 789 UNS S32205 SMLS Pipe | SA790 S32205 UNS Polished Pipe |
UNS S32205 Pipe | 4 inch UNS S32205 Duplex Steel Pipe |
Duplex UNS S32205 Hollow Pipe | ASTM A790 UNS S32205 Electropolished Pipe |
Stainless Duplex UNS S32205 Custom Pipe | UNS S32205 Capillary Pipe |
ASTM A790 UNS S32205 Square Pipe | UNS S32205 Stainless Steel Thin Wall Pipe |
Capillary UNS S32205 Thin Pipe | High pressure SA789 S32205 UNS Pipe |
UNS S32205 Stainless Steel Fabricated Pipe | Stainless Duplex UNS S32205 Annealed pipe |
DSS UNS S32205 Beveled End Pipe | UNS S32205 DSS Rectangle Pipe |
SA790 S32205 UNS Round Pipe | Duplex S32205 UNS Exhaust Pipe |