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ACI-ASTM CK20 Steel vs. C51100 Bronze

ACI-ASTM CK20 steel belongs to the iron alloys classification, while C51100 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is C51100 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 37
2.5 to 50
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 78
42
Tensile Strength: Ultimate (UTS), MPa 530
330 to 720
Tensile Strength: Yield (Proof), MPa 260
93 to 700

Thermal Properties

Latent Heat of Fusion, J/g 310
200
Maximum Temperature: Mechanical, °C 1100
190
Melting Completion (Liquidus), °C 1400
1060
Melting Onset (Solidus), °C 1430
970
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 14
84
Thermal Expansion, µm/m-K 15
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
20
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
20

Otherwise Unclassified Properties

Base Metal Price, % relative 25
32
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 4.4
3.0
Embodied Energy, MJ/kg 62
48
Embodied Water, L/kg 190
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
18 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 170
38 to 2170
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 19
10 to 22
Strength to Weight: Bending, points 19
12 to 20
Thermal Diffusivity, mm2/s 3.7
25
Thermal Shock Resistance, points 13
12 to 26

Alloy Composition

Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 23 to 27
0
Copper (Cu), % 0
93.8 to 96.5
Iron (Fe), % 46.7 to 58
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 19 to 22
0
Phosphorus (P), % 0 to 0.040
0.030 to 0.35
Silicon (Si), % 0 to 2.0
0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
3.5 to 4.9
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.5