Ferritic SS 446 Round Bar
SS 446 Round Bar is a high chromium ferritic heat resistant alloy with excellent resistance to oxidation, sulfidation and other forms of hot corrosion. The grade 446 stainless steel is a non-heat treatable, ferritic stainless steel which provides good resistance to high temperature corrosion and oxidation.
Chemical properties for SS 446
|
GRADE |
Cu |
Ni |
Mn |
Si |
Ni |
C |
P |
S |
Fe |
|
|---|---|---|---|---|---|---|---|---|---|---|
|
SS 446 |
MIN |
23 |
– |
– |
– |
– |
BALANCE |
|||
|
MAX |
27 |
0.25 |
1.5 |
1 |
0.25 |
0.2 |
0.04 |
0.03 |
Properties
SS 446 Bars are a low interstitial version of stainless steel due to the presence of more carbon content. These stainless steels are harder, and have improved tensile stress but it also decreases ductility & weldability. The presence of silicon decreases hysteresis losses & improves magnetic permeability.
Mechanical Properties
|
Grade |
Tensile Strength |
Yield Strength |
Elongation |
|---|---|---|---|
|
[MPA] |
[MPA] |
(% in 50mm) min |
|
|
SS 446 |
450 |
275 |
16 |
Solution treated and aged SS 446 Bar possesses excellent resistance to stress corrosion cracking. SS 446 has good resistance to sulphuric gases & oxidation in atmospheric conditions. Alloy 446 Stainless Steel also has better resistance to oil ash corrosion.
Physical Properties
|
Grade |
Density (g/cm3) |
Elastic Modulus (GPa) |
Coeff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
|---|---|---|---|---|
|
0-100°C |
||||
|
SS 446 |
7.8 |
200 |
10.4 |
21.6 |
SS 446 Round Bar is a high chromium ferritic heat resistant alloy which has excellent resistance to sulfidation, oxidation and other forms of hot corrosion. Because of the excellent oxidation resistance at high temperatures this grade is widely used as furnace parts and boiler baffles.
Specification
The Specification for Wrought Stainless steel Bars as per astm Standard is ASTM A276/ASME SA-276, they are categorised into different form and shape such as SS 446 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.
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.
Round bars 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
SS 446 Bars are used in Medical equipment, Food industry, Construction material, Marine Environment, Building construction & Electric equipment are some diversified applications of the SS 446 The sustainability of SS 446 at high temperature is good hence used in elevated temperature application in non sulphuric environment.
