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ACI-ASTM CK20 Steel vs. Nickel 22

ACI-ASTM CK20 steel belongs to the iron alloys classification, while nickel 22 belongs to the nickel alloys. They have 46% 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 CK20 steel and the bottom bar is nickel 22.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Elongation at Break, % 37
49
Fatigue Strength, MPa 220
330
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
84
Tensile Strength: Ultimate (UTS), MPa 530
790
Tensile Strength: Yield (Proof), MPa 260
360

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Mechanical, °C 1100
990
Melting Completion (Liquidus), °C 1400
1390
Melting Onset (Solidus), °C 1430
1360
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
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 25
70
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 4.4
12
Embodied Energy, MJ/kg 62
170
Embodied Water, L/kg 190
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
320
Resilience: Unit (Modulus of Resilience), kJ/m3 170
300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 19
25
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
20 to 22.5
Cobalt (Co), % 0
0 to 2.5
Iron (Fe), % 46.7 to 58
2.0 to 6.0
Manganese (Mn), % 0 to 2.0
0 to 0.015
Molybdenum (Mo), % 0 to 0.5
12.5 to 14.5
Nickel (Ni), % 19 to 22
50.8 to 63
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 2.0
0 to 0.080
Sulfur (S), % 0 to 0.040
0 to 0.020
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0
0 to 0.35