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ACI-ASTM CK20 Steel vs. CC382H Copper-nickel

ACI-ASTM CK20 steel belongs to the iron alloys classification, while CC382H copper-nickel belongs to the copper alloys. They have a modest 24% 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 (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is CC382H copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
130
Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 37
20
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
53
Tensile Strength: Ultimate (UTS), MPa 530
490
Tensile Strength: Yield (Proof), MPa 260
290

Thermal Properties

Latent Heat of Fusion, J/g 310
240
Maximum Temperature: Mechanical, °C 1100
260
Melting Completion (Liquidus), °C 1400
1180
Melting Onset (Solidus), °C 1430
1120
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 14
30
Thermal Expansion, µm/m-K 15
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
5.6

Otherwise Unclassified Properties

Base Metal Price, % relative 25
41
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 4.4
5.2
Embodied Energy, MJ/kg 62
76
Embodied Water, L/kg 190
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
85
Resilience: Unit (Modulus of Resilience), kJ/m3 170
290
Stiffness to Weight: Axial, points 14
8.8
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 19
15
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 3.7
8.2
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Bismuth (Bi), % 0
0 to 0.0020
Boron (B), % 0
0 to 0.010
Carbon (C), % 0 to 0.2
0 to 0.030
Chromium (Cr), % 23 to 27
1.5 to 2.0
Copper (Cu), % 0
62.8 to 68.4
Iron (Fe), % 46.7 to 58
0.5 to 1.0
Lead (Pb), % 0
0 to 0.0050
Magnesium (Mg), % 0
0 to 0.010
Manganese (Mn), % 0 to 2.0
0.5 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 19 to 22
29 to 32
Phosphorus (P), % 0 to 0.040
0 to 0.010
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 2.0
0.15 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.010
Tellurium (Te), % 0
0 to 0.0050
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0 to 0.15