ASTM A302 Alloy Steel vs. Nickel 690
ASTM A302 alloy steel belongs to the iron alloys classification, while nickel 690 belongs to the nickel alloys.
For each property being compared, the top bar is ASTM A302 alloy steel and the bottom bar is nickel 690.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 180 to 190 | |
| 90 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 20 to 23 | |
| 3.4 to 34 |
| Fatigue Strength, MPa | 250 to 280 | |
| 180 to 300 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 79 |
| Shear Strength, MPa | 370 to 390 | |
| 420 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 590 to 620 | |
| 640 to 990 |
| Tensile Strength: Yield (Proof), MPa | 350 to 390 | |
| 250 to 760 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 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 to 51 | |
| 14 |
| Thermal Expansion, µm/m-K | 13 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 to 7.4 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 to 8.4 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 to 3.0 | |
| 50 |
| Density, g/cm3 | 7.8 to 7.9 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 1.5 to 1.6 | |
| 8.2 |
| Embodied Energy, MJ/kg | 20 to 21 | |
| 120 |
| Embodied Water, L/kg | 48 to 50 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 31 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 to 410 | |
| 160 to 1440 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 21 to 22 | |
| 21 to 33 |
| Strength to Weight: Bending, points | 20 to 21 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 10 to 14 | |
| 3.5 |
| Thermal Shock Resistance, points | 17 to 18 | |
| 16 to 25 |