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ACI-ASTM CT15C Steel vs. Nickel 686

ACI-ASTM CT15C steel belongs to the iron alloys classification, while nickel 686 belongs to the nickel alloys. They have 55% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CT15C steel and the bottom bar is nickel 686.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 23
51
Fatigue Strength, MPa 130
410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
77
Tensile Strength: Ultimate (UTS), MPa 500
780
Tensile Strength: Yield (Proof), MPa 190
350

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Mechanical, °C 1080
980
Melting Completion (Liquidus), °C 1410
1380
Melting Onset (Solidus), °C 1360
1340
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 12
9.8
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 36
70
Density, g/cm3 8.0
9.0
Embodied Carbon, kg CO2/kg material 6.1
12
Embodied Energy, MJ/kg 88
170
Embodied Water, L/kg 190
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
320
Resilience: Unit (Modulus of Resilience), kJ/m3 93
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 17
21
Thermal Diffusivity, mm2/s 3.2
2.6
Thermal Shock Resistance, points 12
21

Alloy Composition

Carbon (C), % 0.050 to 0.15
0 to 0.010
Chromium (Cr), % 19 to 21
19 to 23
Iron (Fe), % 40.3 to 49.2
0 to 5.0
Manganese (Mn), % 0.15 to 1.5
0 to 0.75
Molybdenum (Mo), % 0
15 to 17
Nickel (Ni), % 31 to 34
49.5 to 63
Niobium (Nb), % 0.5 to 1.5
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.15 to 1.5
0 to 0.080
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0.020 to 0.25
Tungsten (W), % 0
3.0 to 4.4