Type 4 Magnetic Alloy vs. ASTM A387 Grade 12 Steel
Type 4 magnetic alloy belongs to the nickel alloys classification, while ASTM A387 grade 12 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is Type 4 magnetic alloy and the bottom bar is ASTM A387 grade 12 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 2.0 to 40 | |
| 25 |
| Fatigue Strength, MPa | 220 to 400 | |
| 190 to 230 |
| Poisson's Ratio | 0.31 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 420 to 630 | |
| 300 to 330 |
| Tensile Strength: Ultimate (UTS), MPa | 620 to 1100 | |
| 470 to 520 |
| Tensile Strength: Yield (Proof), MPa | 270 to 1040 | |
| 260 to 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 900 | |
| 430 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1470 |
| Melting Onset (Solidus), °C | 1370 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 470 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.0 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 60 | |
| 2.8 |
| Density, g/cm3 | 8.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 1.6 |
| Embodied Energy, MJ/kg | 140 | |
| 21 |
| Embodied Water, L/kg | 210 | |
| 51 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 22 to 200 | |
| 98 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 190 to 2840 | |
| 180 to 250 |
| Stiffness to Weight: Axial, points | 12 | |
| 13 |
| Stiffness to Weight: Bending, points | 22 | |
| 24 |
| Strength to Weight: Axial, points | 19 to 35 | |
| 16 to 18 |
| Strength to Weight: Bending, points | 18 to 27 | |
| 17 to 18 |
| Thermal Shock Resistance, points | 21 to 37 | |
| 14 to 15 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0.050 to 0.17 |
| Chromium (Cr), % | 0 to 0.3 | |
| 0.8 to 1.2 |
| Cobalt (Co), % | 0 to 0.5 | |
| 0 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 |
| Iron (Fe), % | 9.5 to 17.5 | |
| 97 to 98.2 |
| Manganese (Mn), % | 0 to 0.8 | |
| 0.4 to 0.65 |
| Molybdenum (Mo), % | 3.5 to 6.0 | |
| 0.45 to 0.6 |
| Nickel (Ni), % | 79 to 82 | |
| 0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.5 | |
| 0.15 to 0.4 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.025 |