SAE-AISI D4 Steel vs. Type 4 Magnetic Alloy
SAE-AISI D4 steel belongs to the iron alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI D4 steel and the bottom bar is Type 4 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 8.4 to 15 | |
| 2.0 to 40 |
| Fatigue Strength, MPa | 310 to 920 | |
| 220 to 400 |
| Poisson's Ratio | 0.28 | |
| 0.31 |
| Shear Modulus, GPa | 74 | |
| 73 |
| Shear Strength, MPa | 460 to 1210 | |
| 420 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 2060 | |
| 620 to 1100 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1540 | |
| 270 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 290 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1420 |
| Melting Onset (Solidus), °C | 1380 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 440 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 4.2 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.0 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 8.0 | |
| 60 |
| Density, g/cm3 | 7.7 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 10 |
| Embodied Energy, MJ/kg | 49 | |
| 140 |
| Embodied Water, L/kg | 100 | |
| 210 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 to 160 | |
| 22 to 200 |
| Stiffness to Weight: Axial, points | 14 | |
| 12 |
| Stiffness to Weight: Bending, points | 25 | |
| 22 |
| Strength to Weight: Axial, points | 27 to 75 | |
| 19 to 35 |
| Strength to Weight: Bending, points | 24 to 47 | |
| 18 to 27 |
| Thermal Shock Resistance, points | 23 to 63 | |
| 21 to 37 |
Alloy Composition
| Carbon (C), % | 2.1 to 2.4 | |
| 0 to 0.050 |
| Chromium (Cr), % | 11 to 13 | |
| 0 to 0.3 |
| Cobalt (Co), % | 0 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.3 |
| Iron (Fe), % | 80.6 to 86.3 | |
| 9.5 to 17.5 |
| Manganese (Mn), % | 0 to 0.6 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0.7 to 1.2 | |
| 3.5 to 6.0 |
| Nickel (Ni), % | 0 to 0.3 | |
| 79 to 82 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |
| Vanadium (V), % | 0 to 1.0 | |
| 0 |