SAE-AISI 1144 Steel vs. Nickel 725
SAE-AISI 1144 steel belongs to the iron alloys classification, while nickel 725 belongs to the nickel alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1144 steel and the bottom bar is nickel 725.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 to 17 | |
| 34 |
| Fatigue Strength, MPa | 280 to 430 | |
| 260 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 34 to 40 | |
| 45 |
| Shear Modulus, GPa | 72 | |
| 78 |
| Shear Strength, MPa | 460 to 510 | |
| 580 |
| Tensile Strength: Ultimate (UTS), MPa | 750 to 840 | |
| 860 |
| Tensile Strength: Yield (Proof), MPa | 420 to 690 | |
| 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 980 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1340 |
| Melting Onset (Solidus), °C | 1410 | |
| 1270 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 440 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 75 |
| Density, g/cm3 | 7.8 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 13 |
| Embodied Energy, MJ/kg | 19 | |
| 190 |
| Embodied Water, L/kg | 47 | |
| 270 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 91 to 110 | |
| 240 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 480 to 1290 | |
| 300 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 27 to 30 | |
| 28 |
| Strength to Weight: Bending, points | 23 to 25 | |
| 24 |
| Thermal Shock Resistance, points | 22 to 24 | |
| 23 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.35 |
| Carbon (C), % | 0.4 to 0.48 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 19 to 22.5 |
| Iron (Fe), % | 97.5 to 98 | |
| 2.3 to 15.3 |
| Manganese (Mn), % | 1.4 to 1.7 | |
| 0 to 0.35 |
| Molybdenum (Mo), % | 0 | |
| 7.0 to 9.5 |
| Nickel (Ni), % | 0 | |
| 55 to 59 |
| Niobium (Nb), % | 0 | |
| 2.8 to 4.0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 | |
| 0 to 0.2 |
| Sulfur (S), % | 0.24 to 0.33 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 1.0 to 1.7 |