ASTM A387 Grade 21 Steel vs. C63200 Bronze
ASTM A387 grade 21 steel belongs to the iron alloys classification, while C63200 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is ASTM A387 grade 21 steel and the bottom bar is C63200 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
120 |
Elongation at Break, % | 21 | |
17 to 18 |
Poisson's Ratio | 0.29 | |
0.34 |
Shear Modulus, GPa | 74 | |
44 |
Shear Strength, MPa | 310 to 370 | |
390 to 440 |
Tensile Strength: Ultimate (UTS), MPa | 500 to 590 | |
640 to 710 |
Tensile Strength: Yield (Proof), MPa | 230 to 350 | |
310 to 350 |
Thermal Properties
Latent Heat of Fusion, J/g | 260 | |
230 |
Maximum Temperature: Mechanical, °C | 480 | |
230 |
Melting Completion (Liquidus), °C | 1470 | |
1060 |
Melting Onset (Solidus), °C | 1430 | |
1040 |
Specific Heat Capacity, J/kg-K | 470 | |
440 |
Thermal Conductivity, W/m-K | 41 | |
35 |
Thermal Expansion, µm/m-K | 13 | |
18 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
7.0 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 | |
7.6 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 4.1 | |
29 |
Density, g/cm3 | 7.9 | |
8.3 |
Embodied Carbon, kg CO2/kg material | 1.8 | |
3.4 |
Embodied Energy, MJ/kg | 23 | |
55 |
Embodied Water, L/kg | 62 | |
380 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 to 110 | |
95 to 99 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 320 | |
400 to 510 |
Stiffness to Weight: Axial, points | 13 | |
7.9 |
Stiffness to Weight: Bending, points | 24 | |
20 |
Strength to Weight: Axial, points | 18 to 21 | |
21 to 24 |
Strength to Weight: Bending, points | 18 to 20 | |
20 to 21 |
Thermal Diffusivity, mm2/s | 11 | |
9.6 |
Thermal Shock Resistance, points | 14 to 17 | |
22 to 24 |
Alloy Composition
Aluminum (Al), % | 0 | |
8.7 to 9.5 |
Carbon (C), % | 0.050 to 0.15 | |
0 |
Chromium (Cr), % | 2.8 to 3.3 | |
0 |
Copper (Cu), % | 0 | |
78.8 to 82.6 |
Iron (Fe), % | 94.4 to 96 | |
3.5 to 4.3 |
Lead (Pb), % | 0 | |
0 to 0.020 |
Manganese (Mn), % | 0.3 to 0.6 | |
1.2 to 2.0 |
Molybdenum (Mo), % | 0.9 to 1.1 | |
0 |
Nickel (Ni), % | 0 | |
4.0 to 4.8 |
Phosphorus (P), % | 0 to 0.025 | |
0 |
Silicon (Si), % | 0 to 0.5 | |
0 to 0.1 |
Sulfur (S), % | 0 to 0.025 | |
0 |
Residuals, % | 0 | |
0 to 0.5 |