Annealed ASTM B685 Alloy vs. Annealed SAE-AISI H12
Annealed ASTM B685 alloy belongs to the otherwise unclassified metals classification, while annealed SAE-AISI H12 belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is annealed ASTM B685 alloy and the bottom bar is annealed SAE-AISI H12.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 190 |
| Elongation at Break, % | 23 | |
| 21 |
| Poisson's Ratio | 0.37 | |
| 0.29 |
| Shear Modulus, GPa | 43 | |
| 75 |
| Shear Strength, MPa | 410 | |
| 440 |
| Tensile Strength: Ultimate (UTS), MPa | 660 | |
| 690 |
Thermal Properties
| Latent Heat of Fusion, J/g | 180 | |
| 270 |
| Melting Completion (Liquidus), °C | 1230 | |
| 1480 |
| Melting Onset (Solidus), °C | 1200 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 300 | |
| 470 |
| Thermal Expansion, µm/m-K | 14 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 5.0 | |
| 8.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 4.1 | |
| 9.5 |
Otherwise Unclassified Properties
| Density, g/cm3 | 11 | |
| 7.9 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.1 | |
| 14 |
| Stiffness to Weight: Bending, points | 15 | |
| 24 |
| Strength to Weight: Axial, points | 17 | |
| 24 |
| Strength to Weight: Bending, points | 16 | |
| 22 |
| Thermal Shock Resistance, points | 28 | |
| 22 |
Alloy Composition
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| Aluminum (Al), % | 0 to 0.0050 | |
| 0 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 | |
| 0.3 to 0.4 |
| Chromium (Cr), % | 0 | |
| 4.8 to 5.5 |
| Copper (Cu), % | 39.5 to 40.5 | |
| 0 to 0.25 |
| Iron (Fe), % | 0 to 0.050 | |
| 87.8 to 91.7 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Manganese (Mn), % | 0 | |
| 0.2 to 0.5 |
| Molybdenum (Mo), % | 0 | |
| 1.3 to 1.8 |
| Nickel (Ni), % | 0 | |
| 0 to 0.3 |
| Palladium (Pd), % | 59 to 60.5 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 | |
| 0.8 to 1.2 |
| Silver (Ag), % | 0 to 0.1 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Tungsten (W), % | 0 | |
| 1.0 to 1.7 |
| Vanadium (V), % | 0 | |
| 0 to 0.5 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 |
| Residuals, % | 0 to 0.2 | |
| 0 |