Type 4 Magnetic Alloy vs. ASTM A372 Grade M Steel
Type 4 magnetic alloy belongs to the nickel alloys classification, while ASTM A372 grade M 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 A372 grade M steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 2.0 to 40 | |
| 18 to 21 |
| Fatigue Strength, MPa | 220 to 400 | |
| 450 to 520 |
| Poisson's Ratio | 0.31 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 420 to 630 | |
| 510 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 620 to 1100 | |
| 810 to 910 |
| Tensile Strength: Yield (Proof), MPa | 270 to 1040 | |
| 660 to 770 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 900 | |
| 450 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1460 |
| 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 | |
| 8.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.0 | |
| 9.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 60 | |
| 5.0 |
| Density, g/cm3 | 8.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 2.0 |
| Embodied Energy, MJ/kg | 140 | |
| 27 |
| Embodied Water, L/kg | 210 | |
| 61 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 22 to 200 | |
| 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 190 to 2840 | |
| 1140 to 1580 |
| Stiffness to Weight: Axial, points | 12 | |
| 13 |
| Stiffness to Weight: Bending, points | 22 | |
| 24 |
| Strength to Weight: Axial, points | 19 to 35 | |
| 29 to 32 |
| Strength to Weight: Bending, points | 18 to 27 | |
| 24 to 27 |
| Thermal Shock Resistance, points | 21 to 37 | |
| 24 to 27 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.23 |
| Chromium (Cr), % | 0 to 0.3 | |
| 1.5 to 2.0 |
| Cobalt (Co), % | 0 to 0.5 | |
| 0 |
| Copper (Cu), % | 0 to 0.3 | |
| 0 |
| Iron (Fe), % | 9.5 to 17.5 | |
| 92.5 to 95.1 |
| Manganese (Mn), % | 0 to 0.8 | |
| 0.2 to 0.4 |
| Molybdenum (Mo), % | 3.5 to 6.0 | |
| 0.4 to 0.6 |
| Nickel (Ni), % | 79 to 82 | |
| 2.8 to 3.9 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.3 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.010 |
| Vanadium (V), % | 0 | |
| 0 to 0.080 |