SAE-AISI D4 Steel vs. ASTM A302 Alloy Steel
Both SAE-AISI D4 steel and ASTM A302 alloy steel are iron alloys. There are 28 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 D4 steel and the bottom bar is ASTM A302 alloy steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 8.4 to 15 | |
| 20 to 23 |
| Fatigue Strength, MPa | 310 to 920 | |
| 250 to 280 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 74 | |
| 73 |
| Shear Strength, MPa | 460 to 1210 | |
| 370 to 390 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 2060 | |
| 590 to 620 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1540 | |
| 350 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1460 |
| Melting Onset (Solidus), °C | 1380 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 31 | |
| 39 to 51 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 4.2 | |
| 7.2 to 7.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.0 | |
| 8.2 to 8.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 8.0 | |
| 2.4 to 3.0 |
| Density, g/cm3 | 7.7 | |
| 7.8 to 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 1.5 to 1.6 |
| Embodied Energy, MJ/kg | 49 | |
| 20 to 21 |
| Embodied Water, L/kg | 100 | |
| 48 to 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 to 160 | |
| 110 to 120 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 27 to 75 | |
| 21 to 22 |
| Strength to Weight: Bending, points | 24 to 47 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 8.3 | |
| 10 to 14 |
| Thermal Shock Resistance, points | 23 to 63 | |
| 17 to 18 |