SAE-AISI 1144 Steel vs. S45503 Stainless Steel
Both SAE-AISI 1144 steel and S45503 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1144 steel and the bottom bar is S45503 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 230 | |
| 410 to 500 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 4.6 to 6.8 |
| Fatigue Strength, MPa | 280 to 430 | |
| 710 to 800 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 34 to 40 | |
| 17 to 28 |
| Shear Modulus, GPa | 72 | |
| 75 |
| Shear Strength, MPa | 460 to 510 | |
| 940 to 1070 |
| Tensile Strength: Ultimate (UTS), MPa | 750 to 840 | |
| 1610 to 1850 |
| Tensile Strength: Yield (Proof), MPa | 420 to 690 | |
| 1430 to 1700 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 760 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1440 |
| Melting Onset (Solidus), °C | 1410 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.9 | |
| 15 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 3.4 |
| Embodied Energy, MJ/kg | 19 | |
| 48 |
| Embodied Water, L/kg | 47 | |
| 120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 91 to 110 | |
| 82 to 110 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 27 to 30 | |
| 57 to 65 |
| Strength to Weight: Bending, points | 23 to 25 | |
| 39 to 43 |
| Thermal Shock Resistance, points | 22 to 24 | |
| 56 to 64 |
Alloy Composition
| Carbon (C), % | 0.4 to 0.48 | |
| 0 to 0.010 |
| Chromium (Cr), % | 0 | |
| 11 to 12.5 |
| Copper (Cu), % | 0 | |
| 1.5 to 2.5 |
| Iron (Fe), % | 97.5 to 98 | |
| 72.4 to 78.9 |
| Manganese (Mn), % | 1.4 to 1.7 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.5 |
| Nickel (Ni), % | 0 | |
| 7.5 to 9.5 |
| Niobium (Nb), % | 0 | |
| 0.1 to 0.5 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 | |
| 0 to 0.2 |
| Sulfur (S), % | 0.24 to 0.33 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 1.0 to 1.4 |