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Brief introduction:
Alloy 20 is a Ni-Fe-Cr alloy with additions of Cu and Mo, and it also contains Nb for stabilization against sensitization and resultant intergranular corrosion.
Alloy 20 has excellent resistance to general corrosion, pitting and crevice corrosion in chemicals containing chlorides and sulfuric,phosphoric and nitric acids.
Alloy 20 is used for heat exchangers, tanks, piping, pumps, valves and other process equipment.
Main specifications:
USA Chinese UNS Werkstoff Nr. Alloy 20 NS143 N08020 2.4660 Chemical composition under ASTM B473-07 standard:
Grade chemical composition,% Ni Cr Fe Mo Nb+Ta Mn C Cu Si S P UNS N08020 32.0-38.0 19.0-21.0 Remainder 2.0-3.0 8*C-1.0 ≤2.0 ≤0.07 3.0-4.0 ≤1.0 ≤0.035 ≤0.045 Main product types:
wire,rod,forging, bar,strip,sheet/plate,tube/pipe.
Main produce standards:
Wire,Rod, Bar Forging Plate/Sheet/Strip Tube/Pipe Fitting ASTM B472
ASTM B473
ASME SB472
ASME SB473ASTM B462
ASME SB462ASTM B463 ASME SB463 ASTM B464/B464M ASTM B468
ASTM B729ASTM B366/B366M-16
