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Alloy 825 Pipe Fittings

Chemical Composition %

C

Cr

Fe

Ni

Al

Ti

Cu

Mo

Max

 

Max

 

Max

 

Max

Max

0.15

19.25-23.5

0.50

38.0-46.0

0.2

0.6-1.2

1.5-3.0

2.5-3.5

AVAILABILITY
Seamless Pipe 1/4" – 10" 
Weld Pipe 1/2" - 48" 
Seamless Butt-Weld Fit. 1/2" - 10" 
Welded Butt-Weld Fit. 1/2" - 48" 
Threaded Fittings 1/4" - 4"
Forged Fittings 1/4" - 4" 
Outlets 1/4" - 24" 
Flanges 1/2" - 24" 

SPECIFICATIONS
ASTM - B443, 8705, 8366, B425, B564
ASME - SB443, SB705, SB366, SB925, SB564

DESCRIPTION
Alloy 825 is a Nickel-iron-chromium alloy with additions of molybdenum, copper and titanium. The alloys chemical composition provides exceptional resistance to many corrosive environments. The Nickel content is sufficient for resistance to Chloride-ion stress corrosion cracking. The nickel, combined with molybdenium and copper, also gives outstanding resistance to reducing environments such as those containing sulfuric and phosphoric acid. The molybdenium also aids resistance to pitting and crevice corrosion. The alloys Chromium content confers resistance to a variety of oxidizing substances such as nitric acid, nitrates and oxidizing salts. The titanium addition, with appropriate heat treatment, will stabilize the alloy against sensitization to intergranular corrosion.

DESIGN FEATURES
Good resistance to stress corrosion cracking.
Satisfactory resistance to pitting and crevice corrosion.
Good resistance to oxidising and non-oxidising hot acids.
Good mechanical properties at both room and elevated temperatures up to approximately 550 deg.C (1020 deg. F).
Permission for pressure-vessel use at wall temperature up to 425 deg. C (800 deg. F).

TYPICAL APPLICATIONS
Components such as heating coils, tanks, crates, baskets and chains in sulfuric acid pickling plants Fuel element dissolvers-the alloy withstands the different media (sulfuric and nitric acids, caustic hydroxide etc.) used in processing
Sea water cooled heat exchangers; offshore product piping systems tubes and components in sour gas service - resistant to chloride-ion stresscorrosion cracking Pipelines carrying wet sulphur dioxide gas and pulp digesters in the papermaking process Heat exchangers, evaporators, scrubbers, etc. used in phosphoric acid production
Air cooled heat exchangers used in the processing of liquid petroleum gas (LPG)

TENSILE REQUIREMENTS
Tensile Strength (KSI) 85
Yield Strength (KSI) 35

KSI can be converted to MPA (Megapascals) by multiplying by 6.895.

Alloy 825 45 Degree Elbow   Alloy 825 90 Degree Elbow   Alloy 825 180 Degree Elbow   Alloy 825 Equal Tee
Alloy 825 45 Degree Elbow
Alloy 825 90 Degree Elbow
Alloy 825 180 Degree Elbow
Alloy 825 Equal Tee
Alloy 825 Unequal Tee   Alloy 825 Barred Tee   Alloy 825 Concentric Reducer   Alloy 825 Eccentric Reducer
Alloy 825 Unequal Tee
Alloy 825 Barred Tee
Alloy 825 Concentric Reducer
Alloy 825 Eccentric Reducer
Alloy 825 Lateral   Alloy 825 Y   Alloy 825 Long Radius Bend   Alloy 825 Long Stubend
Alloy 825 Lateral
Alloy 825 Y
Alloy 825 Long Radius Bend
Alloy 825 Long Stubend
Alloy 825 Short Stubend   Alloy 825 Cap   Alloy 825 Swage Nipple   Alloy 825 Barrel Nipple
Alloy 825 Short Stubend
Alloy 825 Cap
Alloy 825 Swage Nipple
Alloy 825 Barrel Nipple
Alloy 825 Spool   Alloy 825 Forged Fitting   Alloy 825 Threaded Fitting   Alloy 825 Bsp Threaded Fitting
Alloy 825 Spool
Alloy 825 Forged Fitting
Alloy 825 Threaded Fitting
Alloy 825 Bsp Threaded Fitting
Alloy 825 Bspt Threaded Fitting   Alloy 825 Npt Threaded Fittings   Alloy 825 Sockolet   Alloy 825 Weldolet
Alloy 825 Bspt Threaded Fitting
Alloy 825 Npt Threaded Fittings
Alloy 825 Sockolet
Alloy 825 Weldolet
Alloy 825 Elbolet   Alloy 825 Latrolet   Alloy 825 Nipolet   Alloy 825 Flangeolet
Alloy 825 Elbolet
Alloy 825 Latrolet
Alloy 825 Nipolet
Alloy 825 Flangeolet
Alloy 825 Sweepolet   Alloy 825 Socketweld Flange   Alloy 825 Weldneck Flange   Alloy 825 Blind Flange
Alloy 825 Sweepolet
Alloy 825 Socketweld Flange
Alloy 825 Weldneck Flange
Alloy 825 Blind Flange
Alloy 825 Lap Joint Flange   Alloy 825 Weldneck Rtj Flange   Alloy 825 Threaded Flange   Alloy 825 Orifice Flange
Alloy 825 Lap Joint Flange
Alloy 825 Weldneck Rtj Flange
Alloy 825 Threaded Flange
Alloy 825 Orifice Flange
Alloy 825 Spectacle Blind Flange   Alloy 825 Pipe        
Alloy 825 Spectacle Blind Flange
  Alloy 825 Pipe        


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