ASTM A387 Grade 9 Class 1 vs. Annealed Type 2 Magnetic Alloy
Both ASTM A387 grade 9 class 1 and annealed Type 2 magnetic alloy are iron alloys. Both are furnished in the annealed condition. They have 52% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is ASTM A387 grade 9 class 1 and the bottom bar is annealed Type 2 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 | |
| 38 |
| Poisson's Ratio | 0.28 | |
| 0.3 |
| Shear Modulus, GPa | 75 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 500 | |
| 510 |
| Tensile Strength: Yield (Proof), MPa | 230 | |
| 260 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 270 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1420 |
| Melting Onset (Solidus), °C | 1410 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 460 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 9.0 | |
| 3.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 10 | |
| 4.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 6.5 | |
| 33 |
| Density, g/cm3 | 7.8 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 2.1 | |
| 5.9 |
| Embodied Energy, MJ/kg | 28 | |
| 81 |
| Embodied Water, L/kg | 87 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 | |
| 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 | |
| 170 |
| Stiffness to Weight: Axial, points | 14 | |
| 12 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 18 | |
| 17 |
| Strength to Weight: Bending, points | 18 | |
| 17 |
| Thermal Shock Resistance, points | 14 | |
| 16 |
Alloy Composition
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.050 |
| Chromium (Cr), % | 8.0 to 10 | |
| 0 to 0.3 |
| Cobalt (Co), % | 0 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 87.1 to 90.8 | |
| 48.2 to 53 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0.9 to 1.1 | |
| 0 to 0.3 |
| Nickel (Ni), % | 0 | |
| 47 to 49 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 to 0.040 | |
| 0 |