SAE-AISI 1090 Steel vs. EN 1.4945 Stainless Steel
Both SAE-AISI 1090 steel and EN 1.4945 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1090 steel and the bottom bar is EN 1.4945 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 280 | |
| 200 to 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 | |
| 19 to 34 |
| Fatigue Strength, MPa | 320 to 380 | |
| 230 to 350 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 72 | |
| 77 |
| Shear Strength, MPa | 470 to 570 | |
| 430 to 460 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 950 | |
| 640 to 740 |
| Tensile Strength: Yield (Proof), MPa | 520 to 610 | |
| 290 to 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 240 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 920 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1490 |
| Melting Onset (Solidus), °C | 1410 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 50 | |
| 14 |
| Thermal Expansion, µm/m-K | 12 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.2 | |
| 3.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 30 |
| Density, g/cm3 | 7.8 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 5.0 |
| Embodied Energy, MJ/kg | 19 | |
| 73 |
| Embodied Water, L/kg | 46 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 82 to 91 | |
| 130 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 730 to 1000 | |
| 210 to 760 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 34 | |
| 22 to 25 |
| Strength to Weight: Bending, points | 24 to 27 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 13 | |
| 3.7 |
| Thermal Shock Resistance, points | 25 to 31 | |
| 14 to 16 |
Alloy Composition
| Carbon (C), % | 0.85 to 1.0 | |
| 0.040 to 0.1 |
| Chromium (Cr), % | 0 | |
| 15.5 to 17.5 |
| Iron (Fe), % | 98 to 98.6 | |
| 57.9 to 65.7 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0 to 1.5 |
| Nickel (Ni), % | 0 | |
| 15.5 to 17.5 |
| Niobium (Nb), % | 0 | |
| 0.4 to 1.2 |
| Nitrogen (N), % | 0 | |
| 0.060 to 0.14 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 | |
| 0.3 to 0.6 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.015 |
| Tungsten (W), % | 0 | |
| 2.5 to 3.5 |