ASTM A266 Carbon Steel vs. SAE-AISI 8740 Steel
Both ASTM A266 carbon steel and SAE-AISI 8740 steel are iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is ASTM A266 carbon steel and the bottom bar is SAE-AISI 8740 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 180 | |
| 170 to 200 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 to 26 | |
| 11 to 23 |
| Fatigue Strength, MPa | 170 to 200 | |
| 270 to 350 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 320 to 380 | |
| 370 to 400 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 600 | |
| 580 to 670 |
| Tensile Strength: Yield (Proof), MPa | 230 to 290 | |
| 380 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 410 |
| 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 | |
| 39 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 to 8.2 | |
| 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 2.6 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.5 |
| Embodied Energy, MJ/kg | 18 to 19 | |
| 20 |
| Embodied Water, L/kg | 46 to 47 | |
| 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 71 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 230 | |
| 390 to 850 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 20 to 24 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 14 | |
| 10 |
| Thermal Shock Resistance, points | 16 to 19 | |
| 17 to 20 |