VRC20Nb3 (Alloy 20 / Alloy 20Cb3 / UNS N08020)

Corrosion resistant special alloy

Alloy stabilized with niobium to prevent sensitization and intergranular corrosion. The alloy has good resistance to general corrosion, with remarkable performance in solutions containing sulfuric acid. It is mainly used for tanks, heat exchangers, pumps and valves in chemical processes.

  • ABTN | ASTM | SAE | AISI: Alloy 20 | ASTM B473 | UNS NO8020
  • DIN | WNr: WNr 2.4660
  • Chemical composition:

C %

Si %

Mn %

Cr %

Ni %

Fe %

Cu %

Ti %

Al %

OTHERS %

max. 0.05

1.0

2.0

20.0

35.0

rest

3.50

-

-

Mo=2.50
Nb=0.70

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