AISI 309 Stainless Steel vs. SAE-AISI D3 Steel
Both AISI 309 stainless steel and SAE-AISI D3 steel are iron alloys. They have 75% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is AISI 309 stainless steel and the bottom bar is SAE-AISI D3 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 34 to 47 | |
| 9.8 to 15 |
| Fatigue Strength, MPa | 250 to 280 | |
| 310 to 940 |
| Poisson's Ratio | 0.27 | |
| 0.28 |
| Shear Modulus, GPa | 78 | |
| 74 |
| Shear Strength, MPa | 420 to 470 | |
| 470 to 1220 |
| Tensile Strength: Ultimate (UTS), MPa | 600 to 710 | |
| 770 to 2050 |
| Tensile Strength: Yield (Proof), MPa | 260 to 350 | |
| 480 to 1550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 270 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1430 |
| Melting Onset (Solidus), °C | 1400 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 16 | |
| 31 |
| Thermal Expansion, µm/m-K | 15 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 3.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 3.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 19 | |
| 8.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 3.2 |
| Embodied Energy, MJ/kg | 51 | |
| 48 |
| Embodied Water, L/kg | 170 | |
| 100 |
Common Calculations
| PREN (Pitting Resistance) | 23 | |
| 13 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 to 230 | |
| 97 to 180 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 25 | |
| 28 to 74 |
| Strength to Weight: Bending, points | 20 to 23 | |
| 24 to 47 |
| Thermal Diffusivity, mm2/s | 4.3 | |
| 8.3 |
| Thermal Shock Resistance, points | 14 to 16 | |
| 23 to 63 |
Alloy Composition
| Carbon (C), % | 0 to 0.2 | |
| 2.0 to 2.4 |
| Chromium (Cr), % | 22 to 24 | |
| 11 to 13.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.25 |
| Iron (Fe), % | 58 to 66 | |
| 80.3 to 87 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 0.6 |
| Nickel (Ni), % | 12 to 15 | |
| 0 to 0.3 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.6 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |
| Tungsten (W), % | 0 | |
| 0 to 1.0 |
| Vanadium (V), % | 0 | |
| 0 to 1.0 |