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ACI-ASTM CK20 Steel vs. C87200 Bronze

ACI-ASTM CK20 steel belongs to the iron alloys classification, while C87200 bronze belongs to the copper alloys. 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 C87200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
85
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 37
30
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 78
43
Tensile Strength: Ultimate (UTS), MPa 530
380
Tensile Strength: Yield (Proof), MPa 260
170

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Maximum Temperature: Mechanical, °C 1100
200
Melting Completion (Liquidus), °C 1400
970
Melting Onset (Solidus), °C 1430
860
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 14
28
Thermal Expansion, µm/m-K 15
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
6.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 25
29
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 4.4
2.7
Embodied Energy, MJ/kg 62
44
Embodied Water, L/kg 190
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
93
Resilience: Unit (Modulus of Resilience), kJ/m3 170
130
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 19
12
Strength to Weight: Bending, points 19
14
Thermal Diffusivity, mm2/s 3.7
8.0
Thermal Shock Resistance, points 13
14

Alloy Composition

Aluminum (Al), % 0
0 to 1.5
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 23 to 27
0
Copper (Cu), % 0
89 to 99
Iron (Fe), % 46.7 to 58
0 to 2.5
Lead (Pb), % 0
0 to 0.5
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 19 to 22
0
Phosphorus (P), % 0 to 0.040
0 to 0.5
Silicon (Si), % 0 to 2.0
1.0 to 5.0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 1.0
Zinc (Zn), % 0
0 to 5.0