Austenitic SS Alloy 20 Round Bar
Incoloy Alloy 20 bar is an austenitic super alloy with nickel, iron, chromium with additions of Copper and Molybdenum which make it resistant to hostile environments, pitting, and crevice corrosion.
CHEMICAL COMPOSITION
|
GRADE |
Ni |
Cr |
Si |
C |
Mn |
P |
S |
Fe |
Cu |
Mo |
Nb |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
NICKEL ALLOY 20 |
MIN % |
32 |
19 |
– |
– |
– |
– |
3 |
2 |
|||
|
MAX % |
38 |
21 |
≤1 |
≤0.07 |
≤2 |
≤0.045 |
≤0.035 |
35 |
4 |
3 |
≤1 |
Properties
The composition of copper and molybdenum in Alloy 20 Round Bar make it resistant to reducing environments also Molybdenum makes it resistant to pitting and crevice corrosion. The chromium content makes it resistant in oxidized environments just like nitric acid. Carpenter 20 steel is best resistant with superior mechanical properties and relatively easy fabrication.
MECHANICAL PROPERTIES
|
Grade |
Tensile Strength |
Yield Strength |
Elongation |
Reduction of area |
|---|---|---|---|---|
|
[MPA] |
[MPA] |
(% in 50mm) min |
min % |
|
|
Alloy 20 |
551 |
241 |
30 |
50 |
Incoloy 20 was designed to make it maximum resistant to acid attack and demonstrates superior resistance to cracking due to stress-corrosion in boiling 20% to 40% sulfuric acid and also has superior general corrosion resistance to chloride stress and sulfuric acid corrosion cracking.
PHYSICAL PROPERTIES
|
Grade |
Density (g/cm3) |
Elastic Modulus (GPa) |
Co-eff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat (J/Kg.K) |
Electrical Resistivity (nΩ.m) |
|---|---|---|---|---|---|---|
|
25-100°C |
at 100°C |
0-100°C |
||||
|
ALLOY 20 |
8.05 |
193 |
14.7 |
12.3 |
500 |
1.08 |
Specification
The Specification for Alloy 20 Round Bar as per astm Standard is ASTM B 473/ASME SB-473, the arelloo categorised into different form and shape such as Alloy 20 Round Bar, Rod, Channel Bar, T-Bar, Flat Bar, Blocks, Square, bar, Triangle, Threaded, Hex (A/F), Profiles, Half Ingot, Billet, I/H Bar, etc. These are available at any Alloy 20 round bar supplier.
When considering wrought stainless round bars, material shall be furnished in the following way such as Hot-worked, Hot-worked and Annealed, Hot-worked- Annealed and cold worked or Hot-worked-Annealed and heat treated.
Alloy 20 bar depending upon their treatment and their use and application they can also be available in different surface finishes such as Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish, 2B, 2D, etc.
Application
Alloy 20 bar is now a popular choice for a wide variety of industries including the chemical, food, pharmaceutical, and plastics industries. In addition, this superalloy is used in heat exchangers, mixing tanks, metal cleaning and pickling equipment, and piping.
