Nickel 690 vs. ASTM A225 Steel
Nickel 690 belongs to the nickel alloys classification, while ASTM A225 steel belongs to the iron alloys.
For each property being compared, the top bar is nickel 690 and the bottom bar is ASTM A225 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 90 | |
| 190 to 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 3.4 to 34 | |
| 21 to 23 |
| Fatigue Strength, MPa | 180 to 300 | |
| 330 to 390 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 79 | |
| 73 |
| Shear Strength, MPa | 420 to 570 | |
| 390 to 520 |
| Tensile Strength: Ultimate (UTS), MPa | 640 to 990 | |
| 620 to 830 |
| Tensile Strength: Yield (Proof), MPa | 250 to 760 | |
| 460 to 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1010 | |
| 400 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1460 |
| Melting Onset (Solidus), °C | 1340 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 14 | |
| 52 |
| Thermal Expansion, µm/m-K | 14 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.5 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.6 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 2.3 |
| Density, g/cm3 | 8.3 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 1.8 |
| Embodied Energy, MJ/kg | 120 | |
| 24 to 25 |
| Embodied Water, L/kg | 290 | |
| 48 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 to 170 | |
| 120 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 to 1440 | |
| 580 to 820 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 33 | |
| 22 to 29 |
| Strength to Weight: Bending, points | 20 to 27 | |
| 21 to 25 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 14 |
| Thermal Shock Resistance, points | 16 to 25 | |
| 18 to 24 |