ASTM A203 Steel vs. Nickel 690
ASTM A203 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 A203 steel and the bottom bar is nickel 690.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 160 to 180 | |
| 90 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 22 to 26 | |
| 3.4 to 34 |
| Fatigue Strength, MPa | 210 to 280 | |
| 180 to 300 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 79 |
| Shear Strength, MPa | 330 to 370 | |
| 420 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 590 | |
| 640 to 990 |
| Tensile Strength: Yield (Proof), MPa | 290 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 | 52 | |
| 14 |
| Thermal Expansion, µm/m-K | 13 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.4 to 7.6 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.5 to 8.7 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.2 to 4.0 | |
| 50 |
| Density, g/cm3 | 7.9 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 1.6 to 1.7 | |
| 8.2 |
| Embodied Energy, MJ/kg | 21 to 23 | |
| 120 |
| Embodied Water, L/kg | 50 to 52 | |
| 290 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 31 to 170 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 230 to 410 | |
| 160 to 1440 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 21 to 33 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 20 to 27 |
| Thermal Diffusivity, mm2/s | 14 | |
| 3.5 |
| Thermal Shock Resistance, points | 15 to 17 | |
| 16 to 25 |