CARPENTER® alloy 20Cb-3® (UNS N08020)
Ni 35, Fe 37, Cr 20, Cu 3.5, Mo 2.5 Mn 2.00 C 0.07 Si 1.00 Cu 3.5 S 0.035 P 0.045
High Performance Alloys stocks and
produces this grade in the following forms: Bar, wire, sheet, plate, coil, fasteners and forgings. Request quote on this grade.
Alloy 20 is a highly alloyed iron-base nickel-chromium-molybdenum stainless steel developed primarily for use in the sulfuric acid related processes. Besides sulfuric acid related processes, some typical corrosion resistant applications for the alloy include chemical, pharmaceutical, food, plastics, synthetic fibers, pickling and FGD systems plus many others.
Although normally considered a stainless steel, it has been classified as a nickel base.
Chemical Requirements |
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|---|---|---|---|---|---|---|---|
|
Ni |
Cr |
Mo |
Mn |
C |
Si |
Fe |
|
|
Max |
38.00 |
21.00 |
3.00 |
2.00 |
0.07 |
1.00 |
Bal. |
|
Min |
32.00 |
19.00 |
2.00 |
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Mechanical Property Requirements |
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|---|---|---|---|---|---|
|
Ultimate Tensile, min. |
Yield Strength,min. (0.2% OS) |
Elong. in 2 in. ( 50.8 mm), min.% |
R/A min. |
Hardness |
|
|
Cold Finished/Annealed |
|||||
|
Min |
80 KSi |
35 KSi |
30.0 |
50.0 |
|
|
Max |
|||||
|
Min |
551 Mpa |
241 MPa |
|||
|
Max |
|||||
|
Hot Finished/Annealed |
|||||
|
Min |
80 KSi |
35 KSi |
30.0 |
50.0 |
|
|
Max |
|||||
|
Min |
551 MPa |
241 MPa |
|||
|
Max |
|||||
|
Form |
Standard |
|---|---|
|
Metal Type |
UNS N08020 |
|
Bar |
ASTM B473 |
|
Wire |
ASTM B471 |
|
Sheet |
ASTM B463 |
|
Plate |
ASTM B463 |
|
Fitting |
ASTM B366 |
|
Forging |
ASTM B462 |
|
Weld Wire |
ER320LR |
|
Weld Electrode |
E320LR |
CARPENTER® and 20Cb-3® are registered trademarks of Carpenter Technology.
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