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Alloy 446 -a high chromium ferritic stainless steel
Properties

Alloy 446 is a high chromium ferritic stainless steel commonly used in high temperature applications from 1500 degF to 2200 degF. 446 is the most oxidation resistant steel among the 400 series stainless'. Its resistance to cyclic oxidation is equal to or better than 309 and 310, but has lower strength at elevated temperatures.

Applications

Alloy 446 is used to make parts and equipment that require excellent high temperature resistance to oxidation and corrosion. Examples include: burners, boiler parts, thermocouple protectors, injector nozzles in molten compounds, flame rods and metal to glass bonding parts.

GPS Inventory Spotlight: 446
Type Seamless & Welded Pipe Butt Weld Fittings Flanges & Pressure Fittings
Sizes 1/4" thru 16" 1/2" thru 12" All descriptions
Schedules Sch 10, 40, 80, 160 & XXH Sch 10, 40, 80, 160, & XXH
ASTM Standards
Bar Butt Weld Fittings Pipe, Welded & Seamless Plate
A276 A815 A268 A240
Minimum Physical Properties
Tensile Strength Yield Strength Elongation Hardness
65 KSI Min 40 KSI Min 20% Min B95 Max
Chemical Composition (wt%)
C Mn P S Si Ni Cr Fe N
0.12 Max 1.50 Max 0.04 Max 0.03 Max 0.75 Max 0.50 Max 23.0 - 30.0 Balance 0.10 - 0.25
 
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