C47940 Brass vs. S21904 Stainless Steel
C47940 brass belongs to the copper alloys classification, while S21904 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is C47940 brass and the bottom bar is S21904 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 200 |
| Elongation at Break, % | 14 to 34 | |
| 17 to 51 |
| Poisson's Ratio | 0.31 | |
| 0.28 |
| Shear Modulus, GPa | 40 | |
| 78 |
| Shear Strength, MPa | 250 to 310 | |
| 510 to 620 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 520 | |
| 700 to 1000 |
| Tensile Strength: Yield (Proof), MPa | 160 to 390 | |
| 390 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 980 |
| Melting Completion (Liquidus), °C | 850 | |
| 1400 |
| Melting Onset (Solidus), °C | 800 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 380 | |
| 480 |
| Thermal Conductivity, W/m-K | 110 | |
| 14 |
| Thermal Expansion, µm/m-K | 20 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 15 |
| Density, g/cm3 | 8.2 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.8 | |
| 3.0 |
| Embodied Energy, MJ/kg | 47 | |
| 43 |
| Embodied Water, L/kg | 330 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 68 to 100 | |
| 160 to 310 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 120 to 740 | |
| 380 to 2070 |
| Stiffness to Weight: Axial, points | 7.1 | |
| 14 |
| Stiffness to Weight: Bending, points | 19 | |
| 25 |
| Strength to Weight: Axial, points | 13 to 17 | |
| 25 to 36 |
| Strength to Weight: Bending, points | 14 to 17 | |
| 23 to 29 |
| Thermal Diffusivity, mm2/s | 36 | |
| 3.8 |
| Thermal Shock Resistance, points | 13 to 17 | |
| 15 to 21 |
Alloy Composition
| Carbon (C), % | 0 | |
| 0 to 0.040 |
| Chromium (Cr), % | 0 | |
| 19 to 21.5 |
| Copper (Cu), % | 63 to 66 | |
| 0 |
| Iron (Fe), % | 0.1 to 1.0 | |
| 59.5 to 67.4 |
| Lead (Pb), % | 1.0 to 2.0 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 8.0 to 10 |
| Nickel (Ni), % | 0.1 to 0.5 | |
| 5.5 to 7.5 |
| Nitrogen (N), % | 0 | |
| 0.15 to 0.4 |
| Phosphorus (P), % | 0 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Tin (Sn), % | 1.2 to 2.0 | |
| 0 |
| Zinc (Zn), % | 28.1 to 34.6 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |