AISI 304N Stainless Steel vs. Nickel 690
AISI 304N stainless steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is AISI 304N stainless steel and the bottom bar is nickel 690.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 360 | |
| 90 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 9.1 to 45 | |
| 3.4 to 34 |
| Fatigue Strength, MPa | 220 to 440 | |
| 180 to 300 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 79 |
| Shear Strength, MPa | 420 to 700 | |
| 420 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 620 to 1180 | |
| 640 to 990 |
| Tensile Strength: Yield (Proof), MPa | 270 to 850 | |
| 250 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 960 | |
| 1010 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1380 |
| Melting Onset (Solidus), °C | 1380 | |
| 1340 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 16 | |
| 14 |
| Thermal Expansion, µm/m-K | 16 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.4 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 50 |
| Density, g/cm3 | 7.8 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 8.2 |
| Embodied Energy, MJ/kg | 43 | |
| 120 |
| Embodied Water, L/kg | 150 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 280 | |
| 31 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 to 1830 | |
| 160 to 1440 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 22 to 42 | |
| 21 to 33 |
| Strength to Weight: Bending, points | 21 to 32 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 4.2 | |
| 3.5 |
| Thermal Shock Resistance, points | 14 to 26 | |
| 16 to 25 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.050 |
| Chromium (Cr), % | 18 to 20 | |
| 27 to 31 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 66.4 to 73.9 | |
| 7.0 to 11 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 8.0 to 10.5 | |
| 58 to 66 |
| Nitrogen (N), % | 0.1 to 0.16 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.015 |