SAE-AISI 8620 Steel vs. SAE-AISI 1038 Steel
Both SAE-AISI 8620 steel and SAE-AISI 1038 steel are iron alloys. They have a very high 98% of their average alloy composition in common. 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 SAE-AISI 8620 steel and the bottom bar is SAE-AISI 1038 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 210 | |
| 170 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 13 to 31 | |
| 14 to 20 |
| Fatigue Strength, MPa | 270 to 360 | |
| 220 to 350 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 73 |
| Shear Strength, MPa | 340 to 420 | |
| 370 to 390 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 690 | |
| 590 to 640 |
| Tensile Strength: Yield (Proof), MPa | 360 to 570 | |
| 320 to 540 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 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 | 39 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 8.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.4 |
| Embodied Energy, MJ/kg | 20 | |
| 18 |
| Embodied Water, L/kg | 50 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 86 to 150 | |
| 83 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 340 to 880 | |
| 270 to 790 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 18 to 24 | |
| 21 to 23 |
| Strength to Weight: Bending, points | 18 to 22 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 10 | |
| 14 |
| Thermal Shock Resistance, points | 15 to 20 | |
| 19 to 20 |
Alloy Composition
| Carbon (C), % | 0.18 to 0.23 | |
| 0.35 to 0.42 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 0 |
| Iron (Fe), % | 96.9 to 98 | |
| 98.6 to 99.05 |
| Manganese (Mn), % | 0.7 to 0.9 | |
| 0.6 to 0.9 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 0 |
| Nickel (Ni), % | 0.4 to 0.7 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.050 |