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Inconel 625 vs 718

Inconel 625 vs 718

Table of Content




Inconel 625 vs 718 Material Properties


Inconel 625 vs 718 Material Properties
Properties Inconel 625 Inconel 718
Melting Range 2350-2460°F (1290-1350°C) 2300-2437°F (1260-1336°C)
Curie Temperature -320°F (-196°C)
  • -320°F (-196°C) (Annealed)
  • 170°F (-112°C) (Annealed and Aged)
Density 0.305lb/cu (8.44gram/cc)
  • 0.296 (Annealed)
  • 0.297 (Annealed and Aged)
Permeability at 200 1.0006
  • 1.0013 (Annealed)
  • 1.0011(-112°C) (Annealed and Aged)
Specific Heat 70°F at( 21°) 0.098 (410) 0.104 (435)

Check Application Wise Difference Between Alloy 625 and 718 Here


Alloy 718 and 625 Application

Alloy 718 and 625 Application
Alloy Application
625
  • Molds
  • Gas-Turbine Engine Aircraft
  • Pumps
  • Nuclear Reactors
718
  • Aerospace
  • Medical Devices
  • Combustion Chambers

Refer How Chemical Composition Wise Inconel 625 and 718 Differ With Each Other

Nickel 625 vs 718 Chemical Composition


Nickel 625 vs 718 Chemical Composition
Element Inconel 625  Inconel 718
Chromium (Cr) 22 17-21
Iron (Fe) 4 Balance
Titanium (Ti) 0.3 0.65-1.15
Aluminum (Al) 0.3 0.20-0.80
Carbon (C ) 0.05 0.08 max
Phosphorous (P) 0.01 0.015max
Boron (B) - 0.006 max
Nickel (Ni) 60 50-55
Molybdenum (Mo) 9 2.80-3.30
Niobium (Nb) 3.5 4.75-5.50
Manganese (Mn) 0.3 0.35 max
Silicon (Si) 0.25 0.35 max
Sulfur (S) 0.003 0.015 max
Cobalt (Co) - 1.00 max
Tantalum (Ta) - 0.30 max

Find Strength Wise Difference Between Inconel 625 vs 718 Here

Mechanical Properties of Inco 718 & 625


Mechanical Properties of Inco 718 & 625
Properties Inconel 625 Inconel 718
Elongation at Break 33 to 34 % 12 to 50 %
Poisson's Ratio 0.29 0.29
Shear Strength 530 to 600 MPa (77 to 87x 103psi) 660 to 950 MPa (96 to 140x 103psi)
Yield Strength 320 to 450 MPa (47 to 65x 103 psi) 510 to 1330 MPa (74 to 190 x 103 psi)
Elastic Modulus 190 GPa (28 x 106 psi) 200 GPa (30 x 106 psi)
Fatigue Strength 240 to 320 MPa (34 to 47 x 103 psi) 460 to 760 MPa (67 to 110 x 103 psi)
Shear Modulus 530 to 600 MPa (77 to 87 x 103 psi) 75 GPa (11 x 106 psi)
Tensile Strength 790 to 910 MPa (120 to 130 x 103 psi) 930 to 1530 MPa (130 to 220 x 103 psi)

Thermal Properties of UNS N06625 & N07718


Thermal Properties of UNS N06625 & N07718
Thermal Properties UNS N06625 UNS N07718
Maximum Temp.: Mechanical 980 °C ( 1800 °F) 980 °C ( 1790 °F)
Meltin Onset (Solidus) 1290°C (2350°F) 1260 °C (2300 °F)
Thermal Conductivity 11 W/m-K (6.4 BTU/h-ft-°F) 11 W/m-K (6.5 BTU/h-ft-°F)
Latent Heat of Fusion 330 J/g 310 J/g
Melting Completion (Liquidus) 1350 °C (2460 °F) 1340 °C (2440 °F)
Specific Heat Capacity 440 J/kg-K (0.1 BTU/lb-°F) 450 J/kg-K (0.11 BTU/lb-°F)
Thermal Expansion 13 µm/m-K 13 µm/m-K
Curie Temperature -200 °C (-320 °F) -110 °C (-170 °F)

Electical Properties of Alloy 718 and 625


Electical Properties of Alloy 718 and 625
Electrical Properties Inconel 625 Inconel 718
With Equal Weight 1.4 % IACS 1.5 % IACS
With Equal Volume 1.3 % IACS 1.4 % IACS

Check Difference Between Suitable Temperature of UNS N06625 and UNS N07718 Material

Inconel Temperature Range


Inconel Temperature Range
Grades Temperature
N06625 1149-1176°C (2100-2150°F)
N07718 Upto Around 1300°F

Refer the Machinability Difference of Inconel 625 and 718 Below

Inconel Alloy 625 vs 718 Machinability

Inconel718 vs 625 Machinability


Coated Carbide
Feed Surface Speed
Mm/rev lpr m/min fpm
0.13-0.51 0.005-0.020 14-34 45-110
High Speed
Feed Surface Speed
Mm/rev lpr m/min fpm
0.13-0.51 0.005-0.020 4.0-10.7 13-35

Nickel 625 Yield Strength


Nickel 625 Yield Strength
Form And Condition Tensile Strength Yield Strength (0.2% Offset) Elongation Reduction Of Area Hardness,Brinell
ksi MPa ksi MPa % %
Rod, Bar, Plate
Annealed 120-150 827-1034 60-95 414-655 60-30 60-40 145-220
Sheet And Strip
Solution-Treated 100-120 689-827 40-60 276-414 60-40 (-) (-)
Tube And Pipe
Solution-Treated 105-130 724-896 42-60 290-414 65-40 90-60 116-194
Annealed 120-150 827-1034 60-90 414-621 55-30 (-) 145-240
Annealed 120-140 827-965 60-75 414-517 55-30 (-) (-)
As-Rolled 120-160 827-1103 60-110 414-758 60-30 60-40 175-240

FAQ


Frequently Asked Question Values
Inconel 718 Density 0.296 lb/in3 (Solution Treated)
Inconel 625 Yield Strength ≥ 414 MPa
Yield Strength Of Inconel 718 827 MPa
Inconel 625 Hardness 84
Inconel 718 Thermal Conductivity 0-100 °C (6.5 W/m.K)
Inconel 718 Rockwell Hardness 24
Inconel 625 & 718 Melting Point 1330°C & 1370-1430°C
Is Inconel Stronger Than Titanium No
Is Inconel 718 Magnetic No