ASTM A387 Grade 91 Class 2 vs. C66200 Brass
ASTM A387 grade 91 class 2 belongs to the iron alloys classification, while C66200 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is ASTM A387 grade 91 class 2 and the bottom bar is C66200 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Elongation at Break, % | 20 | |
| 8.0 to 15 |
| Poisson's Ratio | 0.28 | |
| 0.33 |
| Shear Modulus, GPa | 75 | |
| 42 |
| Shear Strength, MPa | 420 | |
| 270 to 300 |
| Tensile Strength: Ultimate (UTS), MPa | 670 | |
| 450 to 520 |
| Tensile Strength: Yield (Proof), MPa | 470 | |
| 410 to 480 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 600 | |
| 180 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1070 |
| Melting Onset (Solidus), °C | 1420 | |
| 1030 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 390 |
| Thermal Conductivity, W/m-K | 26 | |
| 150 |
| Thermal Expansion, µm/m-K | 13 | |
| 18 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 8.9 | |
| 35 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 10 | |
| 36 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.0 | |
| 29 |
| Density, g/cm3 | 7.8 | |
| 8.7 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.7 |
| Embodied Energy, MJ/kg | 37 | |
| 43 |
| Embodied Water, L/kg | 88 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 40 to 66 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 580 | |
| 760 to 1030 |
| Stiffness to Weight: Axial, points | 14 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 25 | |
| 19 |
| Strength to Weight: Axial, points | 24 | |
| 14 to 17 |
| Strength to Weight: Bending, points | 22 | |
| 15 to 16 |
| Thermal Diffusivity, mm2/s | 6.9 | |
| 45 |
| Thermal Shock Resistance, points | 19 | |
| 16 to 18 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.020 | |
| 0 |
| Carbon (C), % | 0.080 to 0.12 | |
| 0 |
| Chromium (Cr), % | 8.0 to 9.5 | |
| 0 |
| Copper (Cu), % | 0 | |
| 86.6 to 91 |
| Iron (Fe), % | 87.3 to 90.3 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0 |
| Molybdenum (Mo), % | 0.85 to 1.1 | |
| 0 |
| Nickel (Ni), % | 0 to 0.4 | |
| 0.3 to 1.0 |
| Niobium (Nb), % | 0.060 to 0.1 | |
| 0 |
| Nitrogen (N), % | 0.030 to 0.070 | |
| 0 |
| Phosphorus (P), % | 0 to 0.020 | |
| 0.050 to 0.2 |
| Silicon (Si), % | 0.2 to 0.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |
| Tin (Sn), % | 0 | |
| 0.2 to 0.7 |
| Titanium (Ti), % | 0 to 0.010 | |
| 0 |
| Vanadium (V), % | 0.18 to 0.25 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 6.5 to 12.9 |
| Zirconium (Zr), % | 0 to 0.010 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.5 |