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ACI-ASTM CK20 Steel vs. N06455 Nickel

ACI-ASTM CK20 steel belongs to the iron alloys classification, while N06455 nickel belongs to the nickel alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is N06455 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 37
47
Fatigue Strength, MPa 220
290
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
82
Tensile Strength: Ultimate (UTS), MPa 530
780
Tensile Strength: Yield (Proof), MPa 260
330

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1400
1510
Melting Onset (Solidus), °C 1430
1450
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 14
10
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 25
65
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 4.4
12
Embodied Energy, MJ/kg 62
160
Embodied Water, L/kg 190
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
300
Resilience: Unit (Modulus of Resilience), kJ/m3 170
260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 19
24
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 3.7
2.7
Thermal Shock Resistance, points 13
24

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.015
Chromium (Cr), % 23 to 27
14 to 18
Cobalt (Co), % 0
0 to 2.0
Iron (Fe), % 46.7 to 58
0 to 3.0
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
14 to 17
Nickel (Ni), % 19 to 22
58.1 to 72
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.080
Sulfur (S), % 0 to 0.040
0 to 0.030
Titanium (Ti), % 0
0 to 0.7