SAE-AISI 4720 Steel vs. EN 1.4805 Stainless Steel
Both SAE-AISI 4720 steel and EN 1.4805 stainless steel are iron alloys. They have 54% of their average alloy composition in common. There are 28 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 SAE-AISI 4720 steel and the bottom bar is EN 1.4805 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 | |
| 140 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 25 | |
| 9.0 |
| Fatigue Strength, MPa | 260 | |
| 130 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 490 | |
| 490 |
| Tensile Strength: Yield (Proof), MPa | 350 | |
| 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 310 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 1000 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1390 |
| Melting Onset (Solidus), °C | 1420 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 39 | |
| 14 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.9 | |
| 26 |
| Density, g/cm3 | 7.9 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 4.7 |
| Embodied Energy, MJ/kg | 21 | |
| 66 |
| Embodied Water, L/kg | 50 | |
| 180 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 37 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 | |
| 150 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 17 | |
| 17 |
| Strength to Weight: Bending, points | 18 | |
| 18 |
| Thermal Diffusivity, mm2/s | 10 | |
| 3.7 |
| Thermal Shock Resistance, points | 14 | |
| 11 |
Alloy Composition
| Carbon (C), % | 0.17 to 0.22 | |
| 0.2 to 0.5 |
| Chromium (Cr), % | 0.35 to 0.55 | |
| 19 to 23 |
| Iron (Fe), % | 96.7 to 97.8 | |
| 44.9 to 56.8 |
| Manganese (Mn), % | 0.5 to 0.7 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0.9 to 1.2 | |
| 23 to 27 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 1.0 to 2.0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |