ASTM A266 Carbon Steel vs. SAE-AISI 1078 Steel
Both ASTM A266 carbon steel and SAE-AISI 1078 steel are iron alloys.
For each property being compared, the top bar is ASTM A266 carbon steel and the bottom bar is SAE-AISI 1078 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 180 | |
| 220 to 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 to 26 | |
| 11 to 14 |
| Fatigue Strength, MPa | 170 to 200 | |
| 270 to 350 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 34 to 43 | |
| 34 to 45 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 320 to 380 | |
| 440 to 470 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 600 | |
| 730 to 780 |
| Tensile Strength: Yield (Proof), MPa | 230 to 290 | |
| 430 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 51 to 52 | |
| 49 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 to 8.2 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 18 to 19 | |
| 18 |
| Embodied Water, L/kg | 46 to 47 | |
| 45 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 77 to 90 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 230 | |
| 490 to 860 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 26 to 28 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 23 to 24 |
| Thermal Diffusivity, mm2/s | 14 | |
| 13 |
| Thermal Shock Resistance, points | 16 to 19 | |
| 25 to 26 |