Alloy 20, also known as 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.
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Alloy 20 Round Bar Specifications
|
| Specifications |
ASTM B473 / ASTM SB473 |
| Dimensions |
EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Size |
5 mm To 500 mm |
| Diameter |
0.1 mm to 100 mm |
| Length |
100 mm To 3000 mm Long & Above |
| Finish |
Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Tolerance |
H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Form |
Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc. |
Alloy 20 Round Bar Chemical Composition
| Grade |
C |
Mn |
Si |
Cu |
S |
Fe |
Mo |
Ni |
Cr |
| Alloy 20 |
0.02 max |
1.0-2.0 |
0.7 max |
3.0-4.0 |
0.005 max |
bal |
2.0-3.0 |
32 – 38 |
19 – 21 |
Alloy 20 Rods Mechanical Properties
| Density |
Melting Point |
Tensile Strength |
Yield Strength (0.2%Offset) |
Elongation |
| 8.1 g/cm3 |
1443 °C (2430 °F) |
Psi – 80000 , MPa – 551 |
Psi – 35000 , MPa – 241 |
30 % |
Equivalent Grades for Alloy 20 Round Bar
| STANDARD |
WERKSTOFF NR. |
UNS |
AFNOR |
EN |
| Alloy 20 |
2.4660 |
N08020 |
Z2NCUD31-20AZ |
NiCr20CuMo |
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