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ACI-ASTM CK20 Steel vs. 60Cr-40Ni Alloy

ACI-ASTM CK20 steel belongs to the iron alloys classification, while 60Cr-40Ni alloy belongs to the otherwise unclassified metals. They have 47% of their average alloy composition in common. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is 60Cr-40Ni alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
220
Poisson's Ratio 0.28
0.25
Shear Modulus, GPa 78
87
Tensile Strength: Ultimate (UTS), MPa 530
870
Tensile Strength: Yield (Proof), MPa 260
660

Thermal Properties

Latent Heat of Fusion, J/g 310
370
Specific Heat Capacity, J/kg-K 480
490
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 25
49
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
7.4
Embodied Energy, MJ/kg 62
110
Embodied Water, L/kg 190
380

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 170
1000
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 19
31
Strength to Weight: Bending, points 19
26
Thermal Shock Resistance, points 13
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.25
Carbon (C), % 0 to 0.2
0 to 0.1
Chromium (Cr), % 23 to 27
58 to 62
Iron (Fe), % 46.7 to 58
0 to 1.0
Manganese (Mn), % 0 to 2.0
0 to 0.3
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 19 to 22
34.5 to 42
Nitrogen (N), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.020
Titanium (Ti), % 0
0 to 0.5