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ACI-ASTM CF20 Steel vs. C67400 Bronze

ACI-ASTM CF20 steel belongs to the iron alloys classification, while C67400 bronze belongs to the copper alloys. There are 28 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 CF20 steel and the bottom bar is C67400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 50
22 to 28
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
41
Tensile Strength: Ultimate (UTS), MPa 530
480 to 610
Tensile Strength: Yield (Proof), MPa 250
250 to 370

Thermal Properties

Latent Heat of Fusion, J/g 300
190
Maximum Temperature: Mechanical, °C 970
130
Melting Completion (Liquidus), °C 1420
890
Melting Onset (Solidus), °C 1410
870
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 16
100
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
23
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
26

Otherwise Unclassified Properties

Base Metal Price, % relative 16
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.1
2.8
Embodied Energy, MJ/kg 44
48
Embodied Water, L/kg 150
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 160
300 to 660
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 19
17 to 22
Strength to Weight: Bending, points 19
17 to 20
Thermal Diffusivity, mm2/s 4.3
32
Thermal Shock Resistance, points 11
16 to 20

Alloy Composition

Aluminum (Al), % 0
0.5 to 2.0
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 18 to 21
0
Copper (Cu), % 0
57 to 60
Iron (Fe), % 64.2 to 74
0 to 0.35
Lead (Pb), % 0
0 to 0.5
Manganese (Mn), % 0 to 1.5
2.0 to 3.5
Nickel (Ni), % 8.0 to 11
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0.5 to 1.5
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0
31.1 to 40
Residuals, % 0
0 to 0.5