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Alloy 718 Round Bar

    Standard : EN, DIN, JIS, ASTM, BS, ASME, AISI Range : 3.17 MM TO 350 MM DIA Length : 1 to 6 Meters, Custom Cut Lengths Round Bars : Outside Diameter in the range of 4mm to 500mm Bright Bars : Outside Diameter in the range of 4mm to 100mm Hex Bars : 18mm – 57mm (11/16″ to 2-3/4″) Square Bars : 18mm – 47mm (11/16″ to 1-3/4″) Form : Round, Square, Hex (A/F), Rectangle, Flat, Billet, Ingot, Forging Etc.
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Alloy 718 Chemical Composition

ElementPercent by Weight
CCarbon0.08 maximum
MnManganese0.35 maximum
PPhosphorus0.015 maximum
SSulfur0.015 maximum
SiSilicon0.35 maximum
CrChromium17.00 - 21.00
NiNickel50.00 - 55.00
MoMolybdenum2.80 - 3.30
NbColumbium4.75 - 5.50
TiTitanium0.65 - 1.15
AlAluminum0.20 - 0.80
CoCobalt1.00 maximum
BBoron0.006 maximum
CuCopper0.30 maximum
TaTantalum0.05 maximum
FeIronBalance

Alloy 718 Physical Properties

  

Density and Specific Gravity
 Annealed ConditionAged Condition
Density0.296 lb./in3 (8.19 g/cm3)0.297 lb./in3 (8.22 g/cm3)
Specific Gravity8.198.22

  

Thermal Conductivity
Temperature RangeCoefficients
°C°FW/m·KBtu/(hr/ft²/in/°F)
0-10032-2126.511.2


Electrical Resistivity at 68°F (20°C)

  • Annealed: 127 microhm-cm

  • Aged: 121 microhm-cm

Mechanical Properties and Yield Strength of Alloy 718

  

ProductYield Strength Max (0.2% Offset)Ultimate Tensile Strength MaxElongation (% in 2")
Sheet and Strip80,000 psi (550 MPa)14,000 (965 MPa)30 (min)
Plate105,000 psi (725 MPa)150,000 (1,035 MPa)30 (min)

 

Solution Treated plus Precipitation Heat Treatment
Yield Strength Min (0.2% Offset)Ultimate Tensile Strength MinElongation (% in 2")
150,000 (1,035 MPa)180,000 (1,240 MPa)12 (min)


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