ASTM B729 UNS N08020 Pipe,alloy 20 seamless pipe and tube ,Alloy 20 pipes
Available Dimensions of Alloy 20 Pipe & Tubes
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For ASTM B729 Alloy 20 seamless pipes & tubes: 1/2″~16″, SCH10~SCH160.
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For ASTM B464 Alloy 20 welded pipes: 1/2″~6″, SCH 5S, SCH 10S, SCH 40S, SCH 80S (custom-design welded pipes up to 30″).
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For ASTM B468 Alloy 20 welded tubes: 1/2″~5″, wall thickness range: 0.38~12.7 mm.
Alloy 20 Pipe ASTM B729 N08020 DIN 17751 2.4660 is a high-corrosion resistant alloy, which shows very good resistance to phosphoric acid, nitric acid, sulfuric acid in chloric media. DIN 17751 2.4660 Alloy 20 is chiefly used in the chemical industry, apparatus engineering and heat exchanger.
Alloy 20 Carpenter 20, is a nickel-iron-chromium austenitic alloy that was developed for maximum resistance to acid attack, specifically sulfuric acid. This superalloy has excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric, and nitric acids. It also contains niobium for stabilization against sensitization and resultant intergranular corrosion.
ASME SB 729 N08020 Alloy 20 Pipe Chemical Composition
|
Alloy
|
%
|
C
|
Mn
|
P
|
S
|
Si
|
Ni
|
Cr
|
Mo
|
Cu
|
Nb+Ta
|
Fe
|
|
ASME SB 729 N08020
|
min.
|
–
|
–
|
–
|
–
|
–
|
32.00
|
19.00
|
2.00
|
3.00
|
8×C
|
Rest
|
|
max.
|
0.07
|
2.00
|
0.045
|
0.035
|
1.00
|
38.00
|
21.00
|
3.00
|
4.00
|
1.00
|
DIN 17744 2.4660 Alloy 20 Tube Chemical Composition
|
Alloy
|
%
|
Ni
|
C
|
Co
|
Cr
|
Cu
|
Fe
|
Mn
|
Mo
|
Nb+Ta
|
P
|
S
|
Si
|
|
DIN 17751 2.4660
|
min.
|
32.0
|
–
|
–
|
19.0
|
3.0
|
Rest
|
–
|
2.0
|
8×C
|
–
|
–
|
–
|
|
max.
|
38.0
|
0.07
|
1.5
|
21.0
|
4.0
|
–
|
2.0
|
3.0
|
1.00
|
0.025
|
0.015
|
1.00
|
ASME SB 729 N08020 Alloy 20 Pipe Mechanical Properties
|
Alloy
|
Rp0. 2N/mm²
ksi (MPa) min |
Elongation in 2in. (50.8mm)
or 4D min, % |
|
|
ASME SB 729 N08020
|
80 (550)
|
35 (240)
|
30.0
|
