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N06985 Nickel vs. SAE-AISI 5155 Steel

N06985 nickel belongs to the nickel alloys classification, while SAE-AISI 5155 steel belongs to the iron alloys. They have a modest 21% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is N06985 nickel and the bottom bar is SAE-AISI 5155 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
21
Fatigue Strength, MPa 220
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Shear Strength, MPa 480
390
Tensile Strength: Ultimate (UTS), MPa 690
620
Tensile Strength: Yield (Proof), MPa 260
380

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 990
420
Melting Completion (Liquidus), °C 1350
1450
Melting Onset (Solidus), °C 1260
1410
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 10
49
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 55
2.1
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 8.8
1.4
Embodied Energy, MJ/kg 120
19
Embodied Water, L/kg 270
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
110
Resilience: Unit (Modulus of Resilience), kJ/m3 160
380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 23
22
Strength to Weight: Bending, points 21
21
Thermal Diffusivity, mm2/s 2.6
13
Thermal Shock Resistance, points 16
20

Alloy Composition

Carbon (C), % 0 to 0.015
0.51 to 0.59
Chromium (Cr), % 21 to 23.5
0.7 to 0.9
Cobalt (Co), % 0 to 5.0
0
Copper (Cu), % 1.5 to 2.5
0
Iron (Fe), % 18 to 21
97.2 to 97.9
Manganese (Mn), % 0 to 1.0
0.7 to 0.9
Molybdenum (Mo), % 6.0 to 8.0
0
Nickel (Ni), % 35.9 to 53.5
0
Niobium (Nb), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 0 to 1.5
0