Alloy 20 has chromium, nickel & iron in its composition and shows excellent corrosion resistance in different aggressive chemical environments. The Alloy 20 pipe material is stabilized by niobium and thus, can resist intergranular corrosion. They can also resist chloride and sulfuric acid stress corrosion cracking. They have copper in the alloy which enhances the general corrosion resistance properties. The 20CB-3® annealed pipe can withstand different types of corrosion like pitting and crevice. Due to all these properties, the WNR 2.4660 square pipe can be found in pickling equipment, heat exchangers, etc.
The INCOLOY® alloy 20 round pipe can be formed by hot or cold working with traditional methods. Hot forging is done within the temperature range of 2100-2250 °F but it should be controlled properly. The alloy 22 is then annealed at the heating temperature of 1725 and 1850 °F for min 30 minutes/ inch thickness. This is followed by colling the material with a water quench. The heat treatment on the UNS N08020 welded pipe depends on the specific mechanical properties required by an application.
UNS N08020 pipe
Alloy 20 seamless pipe
WNR 2.4660 tubing
The alloy 20 stainless steel pipe standard specifications are ASTM B366, ASTM SB 366, ASTM B564, ASTM B473, ASME SB564. The equivalent material are UNS N08020 and WNR 2.4660.
|1/2 to 4 "||6 to 12 meter||Sch 40 to Sch 80|
|ASTM B729 | ASME SB729||seamless, hot rolled, annealed, welded||petroleum processing equipmeny|
Tubo alloy 20
Carpenter 20 pipe
Alloy 20 tube
|Alloy 20||Cu||Ni||Fe||Cr||Mo||C||Cb/Nb + Ta||Mn||S||Si||P||-|
|Min||3.00||32.00||Bal||19.00||2.00||-||8 x C%||-||-||-||-||%|
|Tensile Strength |
|Yield Strength (0.2% offset) min||Elongation in 2" |
|Reduction in Area|
|KSI min||MPa min||KSI min||MPa min||% min||%|
The alloy 20 seamless pipe is used in different important industries like chemical processing, petrochemical, refining, marine, pharmaceutical and food & beverage. They are used in pumps and valves, mixing and storage tanks, fittings, agitators, food processing equipment and fasteners. They can be given different heat treatments per the application requirement by Alloy 20 and can show good performance in temperatures up to 1000 °F.
The alloy 20 tube is quite expensive compared to standard stainless steel grades. The alloy 20 seamless tube price is higher and can vary with the suppliers depending on their internal costing. The alloy 20 price can also depend on the market conditions, size & dimensions, customization, quantity purchase, added testing requirements and delivery location. To know the exact cost, contact reputed and reliable tubo alloy 20 suppliers like Regent Steel & Engineering Co. They offer the best quality tubes at the most competitive prices.
Yes, carpenter 20 pipes can be welded to carbon steel pipes with certain considerations and precautions. This includes considering the corrosive environments where the pipe will be used. Also, selecting the right welding procedure depending on the wall thickness, pipe diameter and joint configuration is very crucial.
|Description||Manufacture Method||Schedule||Pipe Size||Specification|
|4 SCH 80||SEAMLESS & DRAWN||80||4||ASTM B729 ASME SB729|
|1 SCH 80||80||1|
|1/2 SCH 40||40||0.5|
|2 SCH 80||80||2|
|1 SCH 40||40||1|
|3 SCH 80||80||3|
|OD||Wall Tolerance||OD Tolerance|
|.375”||± 15%||± .005”|
|.250”||± 15%||± .005”|
|.500”||± 15%||± .005”|
|Density||Electrical Resistivity||Specific Heat||Thermal Conductivity|
|Annealing||1725°F and 1850°F|
|Hot working||950 °C (1740 °F)|
| OD |
|Wall Thickness (Inches)|
1688 ºF to 1760 ºF
Schedule 40 to Schedule 80
<0.13 mm a−1