SAE-AISI 1045 Steel vs. S32550 Stainless Steel
Both SAE-AISI 1045 steel and S32550 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 32 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 1045 steel and the bottom bar is S32550 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 180 to 190 | |
260 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
200 |
Elongation at Break, % | 13 to 18 | |
21 |
Fatigue Strength, MPa | 220 to 370 | |
400 |
Poisson's Ratio | 0.29 | |
0.27 |
Reduction in Area, % | 40 to 51 | |
57 |
Shear Modulus, GPa | 72 | |
80 |
Shear Strength, MPa | 380 to 410 | |
540 |
Tensile Strength: Ultimate (UTS), MPa | 620 to 680 | |
860 |
Tensile Strength: Yield (Proof), MPa | 330 to 580 | |
620 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
300 |
Maximum Temperature: Mechanical, °C | 400 | |
1100 |
Melting Completion (Liquidus), °C | 1460 | |
1440 |
Melting Onset (Solidus), °C | 1420 | |
1390 |
Specific Heat Capacity, J/kg-K | 470 | |
480 |
Thermal Conductivity, W/m-K | 51 | |
16 |
Thermal Expansion, µm/m-K | 12 | |
13 |
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 | |
20 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
3.8 |
Embodied Energy, MJ/kg | 18 | |
53 |
Embodied Water, L/kg | 46 | |
180 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 to 93 | |
160 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 300 to 900 | |
940 |
Stiffness to Weight: Axial, points | 13 | |
14 |
Stiffness to Weight: Bending, points | 24 | |
25 |
Strength to Weight: Axial, points | 22 to 24 | |
31 |
Strength to Weight: Bending, points | 21 to 22 | |
26 |
Thermal Diffusivity, mm2/s | 14 | |
4.4 |
Thermal Shock Resistance, points | 20 to 22 | |
23 |
Alloy Composition
Carbon (C), % | 0.43 to 0.5 | |
0 to 0.040 |
Chromium (Cr), % | 0 | |
24 to 27 |
Copper (Cu), % | 0 | |
1.5 to 2.5 |
Iron (Fe), % | 98.5 to 99 | |
57.2 to 67 |
Manganese (Mn), % | 0.6 to 0.9 | |
0 to 1.5 |
Molybdenum (Mo), % | 0 | |
2.9 to 3.9 |
Nickel (Ni), % | 0 | |
4.5 to 6.5 |
Nitrogen (N), % | 0 | |
0.1 to 0.25 |
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 |