SAE-AISI P21 Steel vs. Type 2 Magnetic Alloy
Both SAE-AISI P21 steel and Type 2 magnetic alloy are iron alloys. They have 56% of their average alloy composition in common. There are 21 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 SAE-AISI P21 steel and the bottom bar is Type 2 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 1130 | |
| 510 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1420 |
| Melting Onset (Solidus), °C | 1410 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 460 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.9 | |
| 3.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.0 | |
| 4.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 6.5 | |
| 33 |
| Density, g/cm3 | 7.9 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 2.3 | |
| 5.9 |
| Embodied Energy, MJ/kg | 32 | |
| 81 |
| Embodied Water, L/kg | 62 | |
| 140 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 12 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 40 | |
| 17 to 30 |
| Strength to Weight: Bending, points | 31 | |
| 17 to 25 |
| Thermal Shock Resistance, points | 37 | |
| 16 to 29 |
Alloy Composition
| Carbon (C), % | 0.18 to 0.22 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0 to 0.5 | |
| 0 to 0.3 |
| Cobalt (Co), % | 1.1 to 1.3 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.3 |
| Iron (Fe), % | 92.1 to 94.2 | |
| 48.2 to 53 |
| Manganese (Mn), % | 0.35 to 0.72 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 3.9 to 4.3 | |
| 47 to 49 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.010 |
| Silicon (Si), % | 0.2 to 0.4 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Vanadium (V), % | 0.15 to 0.25 | |
| 0 |