Nickel 690 vs. AISI 304 Stainless Steel
Nickel 690 belongs to the nickel alloys classification, while AISI 304 stainless steel belongs to the iron 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 (3, in this case) are not shown.
For each property being compared, the top bar is nickel 690 and the bottom bar is AISI 304 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 90 | |
| 170 to 360 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 3.4 to 34 | |
| 8.0 to 43 |
| Fatigue Strength, MPa | 180 to 300 | |
| 210 to 440 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 79 | |
| 77 |
| Shear Strength, MPa | 420 to 570 | |
| 400 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 640 to 990 | |
| 580 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 250 to 760 | |
| 230 to 860 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 1010 | |
| 710 |
| Melting Completion (Liquidus), °C | 1380 | |
| 1450 |
| Melting Onset (Solidus), °C | 1340 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 14 | |
| 16 |
| Thermal Expansion, µm/m-K | 14 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.5 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.6 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 50 | |
| 15 |
| Density, g/cm3 | 8.3 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 3.0 |
| Embodied Energy, MJ/kg | 120 | |
| 43 |
| Embodied Water, L/kg | 290 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 to 170 | |
| 86 to 250 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 160 to 1440 | |
| 140 to 1870 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 33 | |
| 21 to 42 |
| Strength to Weight: Bending, points | 20 to 27 | |
| 20 to 32 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 4.2 |
| Thermal Shock Resistance, points | 16 to 25 | |
| 12 to 25 |
Alloy Composition
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.080 |
| Chromium (Cr), % | 27 to 31 | |
| 18 to 20 |
| Copper (Cu), % | 0 to 0.5 | |
| 0 |
| Iron (Fe), % | 7.0 to 11 | |
| 66.5 to 74 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0 to 2.0 |
| Nickel (Ni), % | 58 to 66 | |
| 8.0 to 10.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |