ASTM B817 Type II vs. C21000 Brass
ASTM B817 type II belongs to the titanium alloys classification, while C21000 brass belongs to the copper alloys. There are 24 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 ASTM B817 type II and the bottom bar is C21000 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 110 |
| Elongation at Break, % | 3.0 to 13 | |
| 2.9 to 50 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 40 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 960 | |
| 240 to 450 |
| Tensile Strength: Yield (Proof), MPa | 780 to 900 | |
| 69 to 440 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 200 |
| Maximum Temperature: Mechanical, °C | 350 | |
| 190 |
| Melting Completion (Liquidus), °C | 1580 | |
| 1070 |
| Melting Onset (Solidus), °C | 1530 | |
| 1050 |
| Specific Heat Capacity, J/kg-K | 550 | |
| 390 |
| Thermal Expansion, µm/m-K | 9.9 | |
| 18 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 37 | |
| 30 |
| Density, g/cm3 | 4.6 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 40 | |
| 2.6 |
| Embodied Energy, MJ/kg | 650 | |
| 42 |
| Embodied Water, L/kg | 220 | |
| 310 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 26 to 120 | |
| 13 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2890 to 3890 | |
| 21 to 830 |
| Stiffness to Weight: Axial, points | 13 | |
| 7.2 |
| Stiffness to Weight: Bending, points | 34 | |
| 18 |
| Strength to Weight: Axial, points | 55 to 58 | |
| 7.4 to 14 |
| Strength to Weight: Bending, points | 45 to 47 | |
| 9.6 to 15 |
| Thermal Shock Resistance, points | 62 to 66 | |
| 8.1 to 15 |
Alloy Composition
| Aluminum (Al), % | 5.0 to 6.0 | |
| 0 |
| Carbon (C), % | 0 to 0.1 | |
| 0 |
| Chlorine (Cl), % | 0 to 0.2 | |
| 0 |
| Copper (Cu), % | 0.35 to 1.0 | |
| 94 to 96 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0.35 to 1.0 | |
| 0 to 0.050 |
| Lead (Pb), % | 0 | |
| 0 to 0.030 |
| Nitrogen (N), % | 0 to 0.040 | |
| 0 |
| Oxygen (O), % | 0 to 0.3 | |
| 0 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 |
| Sodium (Na), % | 0 to 0.2 | |
| 0 |
| Tin (Sn), % | 1.5 to 2.5 | |
| 0 |
| Titanium (Ti), % | 82.1 to 87.8 | |
| 0 |
| Vanadium (V), % | 5.0 to 6.0 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 3.7 to 6.0 |
| Residuals, % | 0 | |
| 0 to 0.2 |