EN 1.7725 Steel vs. Nickel 690
EN 1.7725 steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel 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 EN 1.7725 steel and the bottom bar is nickel 690.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 250 to 300 | |
| 90 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 14 | |
| 3.4 to 34 |
| Fatigue Strength, MPa | 390 to 550 | |
| 180 to 300 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1000 | |
| 640 to 990 |
| Tensile Strength: Yield (Proof), MPa | 610 to 860 | |
| 250 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 440 | |
| 1010 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1380 |
| Melting Onset (Solidus), °C | 1420 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 39 | |
| 14 |
| Thermal Expansion, µm/m-K | 13 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.6 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 50 |
| Density, g/cm3 | 7.8 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 8.2 |
| Embodied Energy, MJ/kg | 24 | |
| 120 |
| Embodied Water, L/kg | 54 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 130 | |
| 31 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 980 to 1940 | |
| 160 to 1440 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 29 to 35 | |
| 21 to 33 |
| Strength to Weight: Bending, points | 25 to 28 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 11 | |
| 3.5 |
| Thermal Shock Resistance, points | 24 to 29 | |
| 16 to 25 |
Alloy Composition
| Carbon (C), % | 0.27 to 0.34 | |
| 0 to 0.050 |
| Chromium (Cr), % | 1.3 to 1.7 | |
| 27 to 31 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 95.7 to 97.5 | |
| 7.0 to 11 |
| Manganese (Mn), % | 0.6 to 1.0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 58 to 66 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |
| Vanadium (V), % | 0.050 to 0.15 | |
| 0 |