Penn Stainless offers alloy 20 (UNS N08020) in the following tubular forms:
- Welded Alloy 20 Pipe
- Welded Alloy 20 Tube
- Seamless Alloy 20 Pipe
- Seamless Alloy 20 Tube
Please click on each of the below tabs to review different sections of the data sheet.
Alloy 20 is an iron-base, austenitic alloy with excellent corrosion resistance in a number of applications. When carefully compared to higher-cost alloys, Alloy 20 can be a cost-effective solution.
- flue-gas desulfurization
- chemical processing
- food processing and storage
- pharmaceutical applications
ASTM/ASME……….. UNS N08020
DIN…………………. . 2.4660
- Alloy 20 has exceptional resistance to sulfuric acid but the alloy shows useful resistance in phosphoric acid, nitric acid as well as in chloride environments.
- Alloy 20 is an excellent option when chloride stress corrosion cracking is an issue and resists pitting and crevice corrosion
- Welding Alloy 20 is commonly performed via, TIG, MIG as well as submerged arc welding (SAW) using a matching filler metal.
- Alloy 20 can be formed by either hot-working or cold-work using traditional methods. Hot forged material should be heated between 2100°F and 2250°F with careful temperature control insuring that the material not fall below 1800°F prior to forging.
After hot working, anneal the material by heating to 1725°F and 1850°F for a minimum of 30 minutes per inch of thickness followed by water quench.
||Tensile Strength (ksi) min
||Yield Strength 0.2% offset (ksi) min
||Elongation (% in 50mm) min
Thermal Expansion (min/in)-°F
|Thermal Conductivity BTU/hr-ft-°F
||Specific Heat BTU/lbm -°F
|at 68 °F
||at 68 – 212°F
||at 68 – 212°F
(20 – 100°C)
|at 32 – 212°F
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