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C51900 Bronze vs. ASTM A387 Grade 12 Steel

C51900 bronze belongs to the copper alloys classification, while ASTM A387 grade 12 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C51900 bronze and the bottom bar is ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 14 to 29
25
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 42
73
Shear Strength, MPa 320 to 370
300 to 330
Tensile Strength: Ultimate (UTS), MPa 380 to 620
470 to 520
Tensile Strength: Yield (Proof), MPa 390 to 570
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 200
250
Maximum Temperature: Mechanical, °C 180
430
Melting Completion (Liquidus), °C 1040
1470
Melting Onset (Solidus), °C 930
1420
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 66
44
Thermal Expansion, µm/m-K 18
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 14
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 33
2.8
Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 3.2
1.6
Embodied Energy, MJ/kg 51
21
Embodied Water, L/kg 360
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55 to 180
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 680 to 1450
180 to 250
Stiffness to Weight: Axial, points 7.0
13
Stiffness to Weight: Bending, points 18
24
Strength to Weight: Axial, points 12 to 19
16 to 18
Strength to Weight: Bending, points 13 to 18
17 to 18
Thermal Diffusivity, mm2/s 20
12
Thermal Shock Resistance, points 14 to 22
14 to 15

Alloy Composition

Carbon (C), % 0
0.050 to 0.17
Chromium (Cr), % 0
0.8 to 1.2
Copper (Cu), % 91.7 to 95
0
Iron (Fe), % 0 to 0.1
97 to 98.2
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0
0.4 to 0.65
Molybdenum (Mo), % 0
0.45 to 0.6
Phosphorus (P), % 0.030 to 0.35
0 to 0.025
Silicon (Si), % 0
0.15 to 0.4
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 5.0 to 7.0
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.5
0