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SAE-AISI P21 Steel vs. C95400 Bronze

SAE-AISI P21 steel belongs to the iron alloys classification, while C95400 bronze belongs to the copper alloys. There are 23 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 SAE-AISI P21 steel and the bottom bar is C95400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
43
Tensile Strength: Ultimate (UTS), MPa 1130
600 to 710

Thermal Properties

Latent Heat of Fusion, J/g 250
230
Melting Completion (Liquidus), °C 1450
1040
Melting Onset (Solidus), °C 1410
1030
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 41
59
Thermal Expansion, µm/m-K 12
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.9
13
Electrical Conductivity: Equal Weight (Specific), % IACS 9.0
14

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
27
Density, g/cm3 7.9
8.2
Embodied Carbon, kg CO2/kg material 2.3
3.2
Embodied Energy, MJ/kg 32
53
Embodied Water, L/kg 62
390

Common Calculations

Stiffness to Weight: Axial, points 13
7.7
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 40
20 to 24
Strength to Weight: Bending, points 31
19 to 22
Thermal Diffusivity, mm2/s 11
16
Thermal Shock Resistance, points 37
21 to 25

Alloy Composition

Aluminum (Al), % 0
10 to 11.5
Carbon (C), % 0.18 to 0.22
0
Chromium (Cr), % 0 to 0.5
0
Cobalt (Co), % 1.1 to 1.3
0
Copper (Cu), % 0 to 0.25
83 to 87
Iron (Fe), % 92.1 to 94.2
3.0 to 5.0
Manganese (Mn), % 0.35 to 0.72
0 to 0.5
Nickel (Ni), % 3.9 to 4.3
0 to 1.5
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.4
0
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.15 to 0.25
0
Residuals, % 0
0 to 0.5