S81921 Stainless Steel vs. C66900 Brass
S81921 stainless steel belongs to the iron alloys classification, while C66900 brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is S81921 stainless steel and the bottom bar is C66900 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 120 |
| Elongation at Break, % | 29 | |
| 1.1 to 26 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Shear Modulus, GPa | 79 | |
| 45 |
| Shear Strength, MPa | 460 | |
| 290 to 440 |
| Tensile Strength: Ultimate (UTS), MPa | 710 | |
| 460 to 770 |
| Tensile Strength: Yield (Proof), MPa | 500 | |
| 330 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 190 |
| Maximum Temperature: Mechanical, °C | 990 | |
| 150 |
| Melting Completion (Liquidus), °C | 1430 | |
| 860 |
| Melting Onset (Solidus), °C | 1390 | |
| 850 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 400 |
| Thermal Expansion, µm/m-K | 13 | |
| 20 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 3.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 3.8 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 14 | |
| 23 |
| Density, g/cm3 | 7.7 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 2.9 | |
| 2.8 |
| Embodied Energy, MJ/kg | 41 | |
| 46 |
| Embodied Water, L/kg | 150 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 180 | |
| 4.6 to 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 630 | |
| 460 to 2450 |
| Stiffness to Weight: Axial, points | 14 | |
| 8.1 |
| Stiffness to Weight: Bending, points | 25 | |
| 20 |
| Strength to Weight: Axial, points | 25 | |
| 15 to 26 |
| Strength to Weight: Bending, points | 23 | |
| 16 to 23 |
| Thermal Shock Resistance, points | 20 | |
| 14 to 23 |
Alloy Composition
| Carbon (C), % | 0 to 0.030 | |
| 0 |
| Chromium (Cr), % | 19 to 22 | |
| 0 |
| Copper (Cu), % | 0 | |
| 62.5 to 64.5 |
| Iron (Fe), % | 66.7 to 75.9 | |
| 0 to 0.25 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Manganese (Mn), % | 2.0 to 4.0 | |
| 11.5 to 12.5 |
| Molybdenum (Mo), % | 1.0 to 2.0 | |
| 0 |
| Nickel (Ni), % | 2.0 to 4.0 | |
| 0 |
| Nitrogen (N), % | 0.14 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 22.5 to 26 |
| Residuals, % | 0 | |
| 0 to 0.2 |