Nickel 690 vs. ASTM A203 Steel
Nickel 690 belongs to the nickel alloys classification, while ASTM A203 steel belongs to the iron alloys.
For each property being compared, the top bar is nickel 690 and the bottom bar is ASTM A203 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 90 | |
| 160 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 3.4 to 34 | |
| 22 to 26 |
| Fatigue Strength, MPa | 180 to 300 | |
| 210 to 280 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 79 | |
| 73 |
| Shear Strength, MPa | 420 to 570 | |
| 330 to 370 |
| Tensile Strength: Ultimate (UTS), MPa | 640 to 990 | |
| 520 to 590 |
| Tensile Strength: Yield (Proof), MPa | 250 to 760 | |
| 290 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1010 | |
| 410 |
| 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 | |
| 7.4 to 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.6 | |
| 8.5 to 8.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 3.2 to 4.0 |
| Density, g/cm3 | 8.3 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 1.6 to 1.7 |
| Embodied Energy, MJ/kg | 120 | |
| 21 to 23 |
| Embodied Water, L/kg | 290 | |
| 50 to 52 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 to 170 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 to 1440 | |
| 230 to 410 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 33 | |
| 18 to 21 |
| Strength to Weight: Bending, points | 20 to 27 | |
| 18 to 20 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 14 |
| Thermal Shock Resistance, points | 16 to 25 | |
| 15 to 17 |