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ACI-ASTM CK20 Steel vs. CC761S Brass

ACI-ASTM CK20 steel belongs to the iron alloys classification, while CC761S brass 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 CC761S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
150
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 37
8.7
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
42
Tensile Strength: Ultimate (UTS), MPa 530
540
Tensile Strength: Yield (Proof), MPa 260
340

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1400
960
Melting Onset (Solidus), °C 1430
910
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 14
27
Thermal Expansion, µm/m-K 15
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
43

Otherwise Unclassified Properties

Base Metal Price, % relative 25
27
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 4.4
2.7
Embodied Energy, MJ/kg 62
45
Embodied Water, L/kg 190
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
41
Resilience: Unit (Modulus of Resilience), kJ/m3 170
530
Stiffness to Weight: Axial, points 14
7.4
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 19
18
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 3.7
8.0
Thermal Shock Resistance, points 13
19

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Antimony (Sb), % 0
0 to 0.050
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 23 to 27
0
Copper (Cu), % 0
78 to 83
Iron (Fe), % 46.7 to 58
0 to 0.6
Lead (Pb), % 0
0 to 0.8
Manganese (Mn), % 0 to 2.0
0 to 0.2
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 19 to 22
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
3.0 to 5.0
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0
8.9 to 19