Type 3 Magnetic Alloy vs. Type 4 Magnetic Alloy
Both Type 3 magnetic alloy and Type 4 magnetic alloy are nickel alloys. They have a moderately high 91% of their average alloy composition in common.
For each property being compared, the top bar is Type 3 magnetic alloy and the bottom bar is Type 4 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 180 | |
| 190 |
| Elongation at Break, % | 43 | |
| 2.0 to 40 |
| Fatigue Strength, MPa | 170 | |
| 220 to 400 |
| Poisson's Ratio | 0.31 | |
| 0.31 |
| Shear Modulus, GPa | 70 | |
| 73 |
| Shear Strength, MPa | 380 | |
| 420 to 630 |
| Tensile Strength: Ultimate (UTS), MPa | 550 | |
| 620 to 1100 |
| Tensile Strength: Yield (Proof), MPa | 210 | |
| 270 to 1040 |
Thermal Properties
| Curie Temperature, °C | 400 | |
| 460 |
| Latent Heat of Fusion, J/g | 290 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 910 | |
| 900 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1420 |
| Melting Onset (Solidus), °C | 1320 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 440 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.9 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.0 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 55 | |
| 60 |
| Density, g/cm3 | 8.7 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 8.7 | |
| 10 |
| Embodied Energy, MJ/kg | 120 | |
| 140 |
| Embodied Water, L/kg | 220 | |
| 210 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 22 to 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 120 | |
| 190 to 2840 |
| Stiffness to Weight: Axial, points | 12 | |
| 12 |
| Stiffness to Weight: Bending, points | 22 | |
| 22 |
| Strength to Weight: Axial, points | 18 | |
| 19 to 35 |
| Strength to Weight: Bending, points | 17 | |
| 18 to 27 |
| Thermal Shock Resistance, points | 18 | |
| 21 to 37 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.050 |
| Chromium (Cr), % | 2.0 to 3.0 | |
| 0 to 0.3 |
| Cobalt (Co), % | 0 to 0.5 | |
| 0 to 0.5 |
| Copper (Cu), % | 4.0 to 6.0 | |
| 0 to 0.3 |
| Iron (Fe), % | 9.9 to 19 | |
| 9.5 to 17.5 |
| Manganese (Mn), % | 0 to 1.5 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 3.5 to 6.0 |
| Nickel (Ni), % | 75 to 78 | |
| 79 to 82 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.020 | |
| 0 to 0.020 |