ASTM A225 Steel vs. Nickel 718
ASTM A225 steel belongs to the iron alloys classification, while nickel 718 belongs to the nickel alloys. There are 30 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 ASTM A225 steel and the bottom bar is nickel 718.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 to 23 | |
| 12 to 50 |
| Fatigue Strength, MPa | 330 to 390 | |
| 460 to 760 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Shear Strength, MPa | 390 to 520 | |
| 660 to 950 |
| Tensile Strength: Ultimate (UTS), MPa | 620 to 830 | |
| 930 to 1530 |
| Tensile Strength: Yield (Proof), MPa | 460 to 550 | |
| 510 to 1330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 310 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 980 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1340 |
| Melting Onset (Solidus), °C | 1420 | |
| 1260 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 450 |
| Thermal Conductivity, W/m-K | 52 | |
| 11 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 1.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 1.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 75 |
| Density, g/cm3 | 7.8 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 13 |
| Embodied Energy, MJ/kg | 24 to 25 | |
| 190 |
| Embodied Water, L/kg | 48 | |
| 250 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 170 | |
| 140 to 390 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 580 to 820 | |
| 660 to 4560 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 22 to 29 | |
| 31 to 51 |
| Strength to Weight: Bending, points | 21 to 25 | |
| 25 to 35 |
| Thermal Diffusivity, mm2/s | 14 | |
| 3.0 |
| Thermal Shock Resistance, points | 18 to 24 | |
| 27 to 44 |