SAE-AISI 1045 Steel vs. S15500 Stainless Steel
Both SAE-AISI 1045 steel and S15500 stainless steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1045 steel and the bottom bar is S15500 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 180 to 190 | |
| 290 to 430 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 13 to 18 | |
| 6.8 to 16 |
| Fatigue Strength, MPa | 220 to 370 | |
| 350 to 650 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 40 to 51 | |
| 17 to 40 |
| Shear Modulus, GPa | 72 | |
| 75 |
| Shear Strength, MPa | 380 to 410 | |
| 540 to 870 |
| Tensile Strength: Ultimate (UTS), MPa | 620 to 680 | |
| 890 to 1490 |
| Tensile Strength: Yield (Proof), MPa | 330 to 580 | |
| 590 to 1310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 820 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1420 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 51 | |
| 17 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 13 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 2.7 |
| Embodied Energy, MJ/kg | 18 | |
| 39 |
| Embodied Water, L/kg | 46 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 to 93 | |
| 98 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 300 to 900 | |
| 890 to 4460 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 22 to 24 | |
| 32 to 53 |
| Strength to Weight: Bending, points | 21 to 22 | |
| 26 to 37 |
| Thermal Diffusivity, mm2/s | 14 | |
| 4.6 |
| Thermal Shock Resistance, points | 20 to 22 | |
| 30 to 50 |
Alloy Composition
| Carbon (C), % | 0.43 to 0.5 | |
| 0 to 0.070 |
| Chromium (Cr), % | 0 | |
| 14 to 15.5 |
| Copper (Cu), % | 0 | |
| 2.5 to 4.5 |
| Iron (Fe), % | 98.5 to 99 | |
| 71.9 to 79.9 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 | |
| 3.5 to 5.5 |
| Niobium (Nb), % | 0 | |
| 0.15 to 0.45 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.030 |