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Nickel 693 vs. SAE-AISI 8740 Steel

Nickel 693 belongs to the nickel alloys classification, while SAE-AISI 8740 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is nickel 693 and the bottom bar is SAE-AISI 8740 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
11 to 23
Fatigue Strength, MPa 230
270 to 350
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Shear Strength, MPa 440
370 to 400
Tensile Strength: Ultimate (UTS), MPa 660
580 to 670
Tensile Strength: Yield (Proof), MPa 310
380 to 570

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 1010
410
Melting Completion (Liquidus), °C 1350
1460
Melting Onset (Solidus), °C 1310
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 9.1
39
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 60
2.6
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 9.9
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 320
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
71 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 250
390 to 850
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23
20 to 24
Strength to Weight: Bending, points 21
20 to 22
Thermal Diffusivity, mm2/s 2.3
10
Thermal Shock Resistance, points 19
17 to 20

Alloy Composition

Aluminum (Al), % 2.5 to 4.0
0
Carbon (C), % 0 to 0.15
0.38 to 0.43
Chromium (Cr), % 27 to 31
0.4 to 0.6
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 2.5 to 6.0
96.5 to 97.7
Manganese (Mn), % 0 to 1.0
0.75 to 1.0
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 53.3 to 67.5
0.4 to 0.7
Niobium (Nb), % 0.5 to 2.5
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.5
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.040
Titanium (Ti), % 0 to 1.0
0