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Nickel 693 vs. SAE-AISI P21 Steel

Nickel 693 belongs to the nickel alloys classification, while SAE-AISI P21 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is nickel 693 and the bottom bar is SAE-AISI P21 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 660
1130

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Melting Completion (Liquidus), °C 1350
1450
Melting Onset (Solidus), °C 1310
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 9.1
41
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 60
6.5
Density, g/cm3 8.1
7.9
Embodied Carbon, kg CO2/kg material 9.9
2.3
Embodied Energy, MJ/kg 140
32
Embodied Water, L/kg 320
62

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23
40
Strength to Weight: Bending, points 21
31
Thermal Diffusivity, mm2/s 2.3
11
Thermal Shock Resistance, points 19
37

Alloy Composition

Aluminum (Al), % 2.5 to 4.0
0
Carbon (C), % 0 to 0.15
0.18 to 0.22
Chromium (Cr), % 27 to 31
0 to 0.5
Cobalt (Co), % 0
1.1 to 1.3
Copper (Cu), % 0 to 0.5
0 to 0.25
Iron (Fe), % 2.5 to 6.0
92.1 to 94.2
Manganese (Mn), % 0 to 1.0
0.35 to 0.72
Nickel (Ni), % 53.3 to 67.5
3.9 to 4.3
Niobium (Nb), % 0.5 to 2.5
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 1.0
0
Vanadium (V), % 0
0.15 to 0.25