Nickel 690 vs. EN 1.7725 Steel
Nickel 690 belongs to the nickel alloys classification, while EN 1.7725 steel belongs to the iron alloys. There are 30 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 nickel 690 and the bottom bar is EN 1.7725 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 90 | |
| 250 to 300 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 3.4 to 34 | |
| 14 |
| Fatigue Strength, MPa | 180 to 300 | |
| 390 to 550 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 79 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 640 to 990 | |
| 830 to 1000 |
| Tensile Strength: Yield (Proof), MPa | 250 to 760 | |
| 610 to 860 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1010 | |
| 440 |
| 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 | |
| 39 |
| Thermal Expansion, µm/m-K | 14 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.5 | |
| 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.6 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 2.9 |
| Density, g/cm3 | 8.3 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 1.8 |
| Embodied Energy, MJ/kg | 120 | |
| 24 |
| Embodied Water, L/kg | 290 | |
| 54 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 to 170 | |
| 110 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 to 1440 | |
| 980 to 1940 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 33 | |
| 29 to 35 |
| Strength to Weight: Bending, points | 20 to 27 | |
| 25 to 28 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 11 |
| Thermal Shock Resistance, points | 16 to 25 | |
| 24 to 29 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0.27 to 0.34 |
| Chromium (Cr), % | 27 to 31 | |
| 1.3 to 1.7 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 7.0 to 11 | |
| 95.7 to 97.5 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0.6 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.3 to 0.5 |
| Nickel (Ni), % | 58 to 66 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.025 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Vanadium (V), % | 0 | |
| 0.050 to 0.15 |