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Nickel Alloy/Titanium

Below you can find our current stock of Carpenter 20Cb3 (Alloy 20). We Specialise in Round Bars, Hex Bars, Hex Bolts, Nuts, Washers, Wire Rods and Flanges.

Characteristics

ALLOY20 is a low carbon, Nb stabilised austentic Ni-Fe-Cr alloy with alloying additions of Cu & Mo.

  • excellent resistance to sulphuric and phosphoric acids
  • good resistance to intergranular corrosion
  • very good resistance to chloride-ion induced stress-corrosion cracking
  • good resistance to pitting and crevice corrosion
  • good mechanical properties at both ambient and elevated temperatures, up to approximately 500 ‹C (930 ‹F).
Density

8.08

Stock Form and Sizes

Round BarSpecification:ASTM B473@ASME SB473@NACE MR0175(ISO 15156)
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
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-190mm
110 115 120 125 130 135 140 145 150 155 160 165 170 180 190
š   š   š   š   š   š   š š š
Dia.200mm-300mm
200 210 220 230 250 280 300                
š     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:ASTM B473
A/F(mm) 10 13 14 17 19 21 22 24 26 27 30 32 36
/       š š     š     š    

¦@š2500‡o`3990‡o

Nut & WasherSpecification: Nut JIS B1181 Class1    Washer, JIS B1256 Normal Series Grade.A
M4 M5 M6 M8 M10 M12 M16 M20 M24
  œ œ œ œ œ œ    

Sourcable Ex-Stock Material for Other Forms from Japanese Distributor

Plate Pipe/Tube Welding
Rod & Wire
Wire
Min Max
2`12mm N/A ™ ™

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

Corrosion resistance

ALLOY20has excellent corrosion resistance to sulphuric, phosphoric and organic acids and to aqueous solutions of their salts. Resistance to nitric acid is also good. Due to the controlled chemical composition, the alloy also has excellent resistance to such forms of corrosion as intergranular corrosion and stress corrosion. The molybdenum content ensures good resistance to pitting and crevice corrosion. Optimum corrosion resistance can only be obtained if the material is in the correct metallurgical condition and clean.

Applications

ALLOY20 is used in a wide variety of applications up to temperatures of approximately 500 ‹C (930 ‹F).

Typical applications are:

  • equipment for the manufacture of sulphuric acid and for processes based on sulphuric acid
  • extraction columns in the production of amines and the processing of pharmaceuticals
  • production of plastics and synthetic fibres
  • equipment for food processing to protect against contamination

Chemical composition

  Ni Cr Fe C Mn Si Cu Mo Nb P S
min(%) 36.5 19.0 bal.   1.0   3.0 2.0 0.1    
max(%) 38.0 21.0 0.02 2.0 0.7 4.0 3 0.3 0.020 0.005

Mechanical propertiesiRound Barj

  Condition Yield Strength(Mpa) Tensile Strength(Mpa) Elongation(%) Hardness(HB)
ASTM Min Value Soft Annealed 241 551 30  
Typical Values at RT Soft Annealed 274 617 50 184

International Specification Comparison chart

  Material Round Bar Plate Pipe
Seamless Welded
ASTM UNS
N08020
B473 B463 B729 B464/468/474
ASME SB473 SB463   SB464/SB468
JIS - - - -  
DIN 2.4660        
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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