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Nickel 689 vs. SAE-AISI O7 Steel

Nickel 689 belongs to the nickel alloys classification, while SAE-AISI O7 steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is nickel 689 and the bottom bar is SAE-AISI O7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 1250
680 to 2110

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Melting Completion (Liquidus), °C 1440
1480
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
6.0
Density, g/cm3 8.5
7.9
Embodied Carbon, kg CO2/kg material 11
2.3
Embodied Energy, MJ/kg 150
33
Embodied Water, L/kg 330
52

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 41
24 to 74
Strength to Weight: Bending, points 30
22 to 46
Thermal Shock Resistance, points 35
23 to 70

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
1.1 to 1.3
Chromium (Cr), % 18 to 20
0.35 to 0.85
Cobalt (Co), % 9.0 to 11
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 5.0
92.9 to 97.6
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 9.0 to 10.5
0 to 0.3
Nickel (Ni), % 48.3 to 60.9
0 to 0.3
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.6
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 2.3 to 2.8
0
Tungsten (W), % 0
1.0 to 2.0
Vanadium (V), % 0
0 to 0.4