SAE-AISI 1025 Steel vs. ACI-ASTM CF8M Steel
Both SAE-AISI 1025 steel and ACI-ASTM CF8M steel are iron alloys. They have 66% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1025 steel and the bottom bar is ACI-ASTM CF8M steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 130 to 140 | |
| 170 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 17 to 28 | |
| 50 |
| Fatigue Strength, MPa | 190 to 280 | |
| 280 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 450 to 500 | |
| 540 |
| Tensile Strength: Yield (Proof), MPa | 250 to 420 | |
| 290 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 1000 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 52 | |
| 16 |
| Thermal Expansion, µm/m-K | 12 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 6.9 | |
| 2.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 2.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 19 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 3.8 |
| Embodied Energy, MJ/kg | 18 | |
| 53 |
| Embodied Water, L/kg | 45 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 80 to 110 | |
| 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 170 to 470 | |
| 210 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 16 to 18 | |
| 19 |
| Strength to Weight: Bending, points | 17 to 18 | |
| 19 |
| Thermal Diffusivity, mm2/s | 14 | |
| 4.3 |
| Thermal Shock Resistance, points | 14 to 16 | |
| 12 |
Alloy Composition
| Carbon (C), % | 0.22 to 0.28 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0 | |
| 18 to 21 |
| Iron (Fe), % | 99.03 to 99.48 | |
| 60.3 to 71 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 | |
| 2.0 to 3.0 |
| Nickel (Ni), % | 0 | |
| 9.0 to 12 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 2.0 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.040 |