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Nickel Alloy/Titanium

Below you can find our current stock of Alloy 825 (Incoloy 825). We Specialise in Round Bars, Hex Bars, Hex Bolts, Nuts, Washers, Wire Rods and Flanges.

Characteristics

ALLOY825 is a titanium-stabilized fully austenitic
Ni-Fe-Cr alloy with additions of Cu + Mo

  • good resistance to stress-corrosion cracking
  • satisfactory resistance to pitting and crevice corrosion
  • good resistance to oxidizing and non-oxidizing hot acids
  • good mechanical properties at both room and elevated temperatures, up to approximately 550 ‹C (1020 ‹F)
  • approval for pressure vessels with wall temperatures up to 450 ‹C (842 ‹F)
Density

8.14

Stock Form and Sizes

Round BarSpecification:ASTM B425/B564¦@ASME SB425/SB564¦@NACE MR0175(ISO 15156)
¦B564/SB564 Apply to Forged Bar Only
Dia.1mm-10mm
1.2 1.6 2 2.6 3 3.5 4 4.4 5 5.3 6 7.1 8 8.95 10
                            š
Dia.12mm-38mm
12 13 16 18 19 20 22 24 25 28 30 32 35 36 38
š š š     š š   š š š š š   š
Dia.40mm-105mm
40 42 45 50 55 60 65 70 75 80 85 90 95 100 105
š š š š š š š š š š š š š š  
Dia.110mm-200mm
110 115 120 125 130 135 140 145 150 160 165 170 180 190 200
š   š   š   š   š š     š   š
Dia.210mm-300mm
210 220 230 250 280 300                  
    š š                      

¦@Ÿ1000‡o@2000‡o@£3000‡o@¡3500‡o@œ4000‡o@š2500‡o`3990‡o
¦@Rolling Thread sizes available in C276(M4 to M10)

Hex BarSpecification: B425
A/F(mm) 10 13 14 17 19 21 22 24 26 27 30 32 36
/ š š   š š     š          

¦@š2500‡o`3990‡o

Sourcable Ex-Stock Material for Other Forms from Japanese Distributor

Plate @Pipe Welding
Rod & Wire
Wire
Min Max
3`12mm N/A ™ N/A

¦@¢EEELimited Sizes Only@™EEEPlease enquire

Corrosion resistance

Alloy 825 is a versatile general engineering alloy with resistance to corrosion in acids and alkalis under both oxidizing and reducing conditions.
High nickel content gives the alloy virtual immunity to stress corrosion cracking.
Alloy 825 is good in media as diverse as sulphuric, sulphurous, phosphoric, nitric and organic acids, alkalis such as sodium or potassium hydroxide, and acidic chloride solutions.
The versatility of Alloy 825 is illustrated by its use in nuclear fuel element dissolvers where a variety of corrosive media, e. g. sulphuric and nitric acids and sodium hydroxide, are handled in the same equipment.

Applications

Alloy 825 is used in a wide variety of applications up to a temperature of approximately 550 ‹C (1020 ‹F).

Typical applications are:

  • components such as heating coils, tanks, crates, baskets and chains in sulphuric acid pickling plants
  • fuel element dissolvers
  • sea-water-cooled heat exchangers, offshore product piping systems; tubes and components in sour gas service
  • heat exchangers, evaporators, scrubbers, dip pipes etc. in phosphoric acid production
  • air-cooled heat exchangers in petroleum refineries
  • food processing
  • chemical plant
  • combustion-resistant alloy for high pressure O2 applications

Chemical composition

  Ni Cr Fe C Mn Si Cu Mo Al Ti P S
min(%) 38.0 19.5 bal.       1.5 2.5   0.6    
max(%) 46.0 23.5 0.025 1.0 0.5 3.0 3.5 0.2 1.2 0.020 0.010

Mechanical propertiesiRound Barj

  Condition Yield Strength(Mpa) Tensile Strength(Mpa) Elongation(%) Hardness(HB)
ASTM Min Value Soft Annealed 241 586 30  
Typical Values at RT Soft Annealed 333 647 33 160

Please contact us with any questions about reference or value of plate and pipe.

International Specification Comparison chart

  Material Round Bar Plate Pipe
Seamless Welded
ASTM UNS
N08825
B425 B424 B423 B163/704/705
ASTM Min Value SB425 SB424 SB423 SB163
JIS NCF825 H4553 G4901 H4552  
DIN 2.4858 17752 17750 17751  
Disclaimer:
All the information on this website is published in good faith and for general information purpose only and not for technical design purposes. We do not make any warranties about the completeness, reliability and accuracy of this information. Any action you take upon the information on our website is strictly at your own risk. and we will not be liable for any losses and damages in connection with the use of our website.

     
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