Stainless Steel 446 is a high-chromium ferritic stainless steel specifically engineered for extreme heat and severe oxidation conditions. With outstanding resistance to scaling, sulfur-bearing gases, and continuous high-temperature exposure, Grade 446 is extensively used in furnace components, kiln linings, heat treatment equipment, and combustion systems. Its superior thermal stability and oxidation resistance make it ideal for continuous service above temperatures where most standard stainless steels fail. Stainless Steel 446 is the ultimate choice for critical high-temperature industrial environments.
Forged SS 446 bars for heavy-duty industrial applications
Heat treated for high hardness and mechanical strength
Material: UNS S44600 stainless steel
Commonly used in bearings, valves, and precision machinery
446 STAINLESS STEEL ROUND BAR EQUIVALENT GRADES
STANDARD
UNS
WNR.
JIS
SS 446
S44600
1.4762
SUS 446
SPECIFICATION OF STAINLESS STEEL 446 ROUND BAR
Stainless Steel Round Bar Specification
ASTM A276 / A479, ASME SA276 / A479
Dimension Standard
EN, DIN, JIS, ASTM, BS, ASME, AISI
Size
14 mm – 300 mm
Thickness
50 mm to 6000 mm Long
Length
1 to 6 Meters, Custom Cut Length
Form
Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.
CHEMICAL COMPOSITION OF STAINLESS STEEL 446 ROUND BAR
Grade
C %
Mn %
Si %
P %
S %
Cr %
Ni %
446
0.20 max
1.50 max
0.75 max
0.040 max
0.030 max
23.0 – 27.0
0.50 max
MECHANICAL PROPERTIES OF STAINLESS STEEL 446 ROUND BAR
Tensile Strength (MPa) min
Yield Strength 0.2% Offset (MPa) min
Elongation (%)
485
275
20
💡 Practical Difference in Use
Use Stainless Steel 446 Round Bars when: excellent corrosion resistance, high-temperature oxidation resistance, moderate hardness, and good wear resistance are required. SS 446 is a high-chromium ferritic stainless steel designed for applications where durability, hygiene, and long-term corrosion protection are essential, especially in marine, chemical, or high-temperature environments.
→ Example: heat exchangers, furnace components, chemical processing equipment, pump parts, valve components, shafts, and industrial machinery requiring corrosion resistance at elevated temperatures.
Heat Treated / Bright Finished Stainless Steel 446 Round Bars when: consistent surface finish, dimensional stability, and improved machining characteristics are required for precision components. Bright drawn or ground bars ensure tight tolerances and improved surface quality, while any stress-relief or solution treatment enhances corrosion and oxidation resistance.
→ Example: precision shafts, polished pump components, CNC machined parts, valve sleeves, high-temperature equipment components, and hygienic industrial machinery parts.
Applications of Stainless Steel 446 Round Bars
Stainless Steel 446 round bars are widely used in chemical, marine, heat-resistant, and precision equipment industries where corrosion resistance, high-temperature stability, and dependable mechanical properties are required.
Chemical & Industrial: Pumps, valves, chemical processing components, corrosion-resistant machinery parts.
Marine & Offshore: Shafts, fasteners, and components exposed to saltwater or humid environments.
