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Nickel Alloy/Titanium

Below you can find our current stock of Alloy 718 (Inconel 718). We Specialise in Round Bars, Hex Bars, Hex Bolts, Nuts, Washers, Wire Rods and Flanges.

Characteristics

ALLOY718 is a precipitation-hardenable Ni-Cr-Fe alloy containing significant amounts of Nb & Mo as well as lesser amounts of Al+Ti. The alloy has good ductility in the
annealed condition and high strength up to 700 ‹C (1300 ‹F).

  • good fabrication characteristics in the annealed condition
  • good tensile, fatigue and creep-rupture strengths
  • high-temperature strength up to 700 ‹C (1300 ‹F)
  • good oxidation resistance up to 1000 ‹C (1830 ‹F)
  • excellent mechanical properties in cryogenic environments
  • excellent corrosion resistance at high and low temperatures and good resistance to stress-corrosion cracking and pitting corrosion
  • good weldability by arc and resistance welding processes without susceptibility to post-weld cracking
Density

8.19

Stock Form and Sizes

Round BarSpecification: ASTM B637@ASME SB637@AMS 5662@GE C50TF13@¦GE B50T69@GE B50TF15 A&D@GE S-1000

š/£ALLOY718 ST šALLOY718 AG

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
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NEW
Dia.12mm-38mm
12 13 16 18 19 20 22 24 25 28 30 32 35 36 38
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Dia.40mm-105mm
40 42 45 50 55 60 65 70 75 80 85 90 95 100 105
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101.6
 
Dia.110mm-200mm
110 115 120 125 130 135 140 145 150 160 165 170 180 190 200
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NEW
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Dia.210mm-300mm
210 220 230 250 280 300                  
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¦@Ÿ1000‡o@2000‡o@£3000‡o@¡3500‡o@œ4000‡o@š2500‡o`3990‡o
¦@Rolling Thread sizes available in C276(M4 to M10)

Sourcable Ex-Stock Material for Other Forms from Japanese Distributor

Plate Pipe Welding
Rod & Wire
Wire
Min Max
N/A N/A ™ ™

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

Corrosion resistance

The high chromium and molybdenum contents of Alloy 718 impart excellent resistance to uniform and localized corrosion, such as pitting in many media at both high and low temperatures. The chromium also enables it to withstand chloride-ion stress-corrosion cracking which makes it an excellent alloy for service in oil and sour gas (H2S containing) environments as well as seawater.
Alloy 718 is generally only used for applications not exceeding 700 ‹C (1300 ‹F). However, oxidation resistance up to 1000 ‹C (1830 ‹F) is particularly high and comparable to that of other gamma-prime (ƒÁ') strengthened superalloys

Applications

Due to its high-temperature strength up to 700 ‹C (1300 ‹F), excellent corrosion resistance and ease of fabrication ALLOY718 finds applications in many fields. Initially it was used as a turbine disk material in aircraft jet engines. Here resistance to creep and stress rupture was most important.
Because of its properties, fabricability and cost effectiveness it has since gained wider acceptance. To-day applications vary from highly stressed rotating and static components in gas turbines and rocket engines to high-strength bolting, springs and fasteners, components in nuclear reactors and space vehicles as well as high-temperature tooling for extrusion, of for example copper, and shearing. Another more recent important application involves pump shafts and other highly stressed well head and downhole components in offshore
and marine engineering. Particularly useful is the alloy for drilling equipment in sour (containing H2S, CO2 and chlorides) oil and gas wells.

Chemical composition

  Ni Cr Fe C Mn Si Cu Mo Co N‚‚ Al Ti B
min(%) 50.0 17.0 bal.         2.80   4.75 0.20 0.65  
max(%) 55.0 21.0 0.08 0.35 0.35 0.30 3.30 1.0 5.50 0.80 1.15 0.006
  P S Pb Se Bi Ta
min(%)           0.05
max(%) 0.015 0.015 5ppm 3ppm 0.3ppm

Mechanical propertiesiRound Barj

  Condition Yield Strength
(Mpa)
Tensile Strength
(Mpa)
Elongation(%) Reduction of Area(%) Hardness(HB)
ASTM Min Value Solution Annealed + Aged 1034 1275 12 15 331
Typical Values at RT Solution Annealed + Aged 1176 1343 17   382

International Specification Comparison chart

  Material Round Bar Plate Pipe
Seamless Welded
ASTM UNS
N07718
B673 B670    
ASME SB673 SB670    
JIS NCF718 H4553 G4901 H4552  
DIN 2.4668 17752 17750 17751  
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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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