Ferritic SS 444 Round Bar
Ferritic SS 444 Bar is a low-carbon (C), low nitrogen (N), dual-stabilized ferritic stainless steel. It is equivalent to Type 304 in many corrosion environments and has a lower coefficient of expansion and better thermal conductivity.
Chemical Composition
|
GRADE |
Cr |
Ni |
Mo |
Fe |
Si |
C |
Mn |
|
|---|---|---|---|---|---|---|---|---|
|
SS 444 |
Min |
– |
– |
– |
– |
– |
– |
|
|
Max |
18.5 |
1 |
2 |
77.475 |
1 |
0.025 |
1 |
Properties
SS 444 Bar chemical composition provides it with excellent corrosion resistance in moderately severe environments of many types that include chlorides and organic acids found in foods and beverages.
Mechanical Properties
|
Grade |
Tensile Strength |
Yield Strength |
Elongation |
Reduction of area |
Hardness, MAX |
|
|---|---|---|---|---|---|---|
|
[MPA] |
[MPA] |
(% in 50mm) min |
min % |
HBW |
HRB |
|
|
SS 444 |
415 |
310 |
20 |
45 |
219 |
|
The ferritic class of stainless steel is generally considered to be weldable by common fusion and resistance techniques. SS 444 Bar material properties also provide satisfactory resistance to dilute sulfuric acid solutions and to highly concentrated sodium hydroxide.
Physical Properties
|
Grade |
Density (g/cm3) |
Mean Co-eff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific Heat ( J/Kg.K) |
Electrical Resistivity (μΩ.m) |
|---|---|---|---|---|---|
|
0-100°C |
at 93°C |
0-100°C |
at 21°C |
||
|
SS 444 |
7.82 |
11 |
26.8 |
427 |
57 |
Specification
The Specification for Wrought Ferritic SS 444 Bar as per astm Standard is ASTM A-276/ASME SA-276, they are categorised into different form and shape such as SS 444 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 SS 444 Round Bar, 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.
These Ferritic SS 444 Round 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
SS 444 Bars are mainly used in Food processing and wine making equipment, roofing and cladding in marine environments, hot water tanks and geysers, automotive components and heat exchanger tubings.
