ASTM Grade HN Steel vs. Type 4 Magnetic Alloy
ASTM grade HN steel belongs to the iron alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. They have a modest 40% of their average alloy composition in common, which, by itself, doesn't mean much. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is ASTM grade HN steel and the bottom bar is Type 4 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 9.0 | |
| 2.0 to 40 |
| Poisson's Ratio | 0.28 | |
| 0.31 |
| Shear Modulus, GPa | 77 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 500 | |
| 620 to 1100 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 1080 | |
| 900 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1420 |
| Melting Onset (Solidus), °C | 1350 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 440 |
| Thermal Expansion, µm/m-K | 16 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 26 | |
| 60 |
| Density, g/cm3 | 7.9 | |
| 8.8 |
| Embodied Carbon, kg CO2/kg material | 4.6 | |
| 10 |
| Embodied Energy, MJ/kg | 66 | |
| 140 |
| Embodied Water, L/kg | 180 | |
| 210 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 12 |
| Stiffness to Weight: Bending, points | 25 | |
| 22 |
| Strength to Weight: Axial, points | 17 | |
| 19 to 35 |
| Strength to Weight: Bending, points | 18 | |
| 18 to 27 |
| Thermal Shock Resistance, points | 11 | |
| 21 to 37 |
Alloy Composition
| Carbon (C), % | 0.2 to 0.5 | |
| 0 to 0.050 |
| Chromium (Cr), % | 19 to 23 | |
| 0 to 0.3 |
| Cobalt (Co), % | 0 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 44.9 to 57.8 | |
| 9.5 to 17.5 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 3.5 to 6.0 |
| Nickel (Ni), % | 23 to 27 | |
| 79 to 82 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.020 |