SAE-AISI D4 Steel vs. ASTM B817 Type II
SAE-AISI D4 steel belongs to the iron alloys classification, while ASTM B817 type II belongs to the titanium alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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 B817 type II.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 100 |
| Elongation at Break, % | 8.4 to 15 | |
| 3.0 to 13 |
| Fatigue Strength, MPa | 310 to 920 | |
| 390 to 530 |
| Poisson's Ratio | 0.28 | |
| 0.32 |
| Shear Modulus, GPa | 74 | |
| 40 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 2060 | |
| 900 to 960 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1540 | |
| 780 to 900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 400 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1580 |
| Melting Onset (Solidus), °C | 1380 | |
| 1530 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 550 |
| Thermal Expansion, µm/m-K | 12 | |
| 9.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 8.0 | |
| 37 |
| Density, g/cm3 | 7.7 | |
| 4.6 |
| Embodied Carbon, kg CO2/kg material | 3.3 | |
| 40 |
| Embodied Energy, MJ/kg | 49 | |
| 650 |
| Embodied Water, L/kg | 100 | |
| 220 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 to 160 | |
| 26 to 120 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 34 |
| Strength to Weight: Axial, points | 27 to 75 | |
| 55 to 58 |
| Strength to Weight: Bending, points | 24 to 47 | |
| 45 to 47 |
| Thermal Shock Resistance, points | 23 to 63 | |
| 62 to 66 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 5.0 to 6.0 |
| Carbon (C), % | 2.1 to 2.4 | |
| 0 to 0.1 |
| Chlorine (Cl), % | 0 | |
| 0 to 0.2 |
| Chromium (Cr), % | 11 to 13 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0.35 to 1.0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 80.6 to 86.3 | |
| 0.35 to 1.0 |
| Manganese (Mn), % | 0 to 0.6 | |
| 0 |
| Molybdenum (Mo), % | 0.7 to 1.2 | |
| 0 |
| Nickel (Ni), % | 0 to 0.3 | |
| 0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.040 |
| Oxygen (O), % | 0 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0 to 0.6 | |
| 0 to 0.1 |
| Sodium (Na), % | 0 | |
| 0 to 0.2 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 0 | |
| 82.1 to 87.8 |
| Vanadium (V), % | 0 to 1.0 | |
| 5.0 to 6.0 |
| Residuals, % | 0 | |
| 0 to 0.4 |