S45503 Stainless Steel vs. SAE-AISI 4340 Steel
Both S45503 stainless steel and SAE-AISI 4340 steel are iron alloys. They have 79% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is S45503 stainless steel and the bottom bar is SAE-AISI 4340 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 410 to 500 | |
| 210 to 360 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 4.6 to 6.8 | |
| 12 to 22 |
| Fatigue Strength, MPa | 710 to 800 | |
| 330 to 740 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 75 | |
| 73 |
| Shear Strength, MPa | 940 to 1070 | |
| 430 to 770 |
| Tensile Strength: Ultimate (UTS), MPa | 1610 to 1850 | |
| 690 to 1280 |
| Tensile Strength: Yield (Proof), MPa | 1430 to 1700 | |
| 470 to 1150 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 430 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1460 |
| Melting Onset (Solidus), °C | 1400 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 3.5 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.4 | |
| 1.7 |
| Embodied Energy, MJ/kg | 48 | |
| 22 |
| Embodied Water, L/kg | 120 | |
| 53 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 82 to 110 | |
| 79 to 170 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 57 to 65 | |
| 24 to 45 |
| Strength to Weight: Bending, points | 39 to 43 | |
| 22 to 33 |
| Thermal Shock Resistance, points | 56 to 64 | |
| 20 to 38 |
Alloy Composition
| Carbon (C), % | 0 to 0.010 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 11 to 12.5 | |
| 0.7 to 0.9 |
| Copper (Cu), % | 1.5 to 2.5 | |
| 0 |
| Iron (Fe), % | 72.4 to 78.9 | |
| 95.1 to 96.3 |
| Manganese (Mn), % | 0 to 0.5 | |
| 0.6 to 0.8 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 7.5 to 9.5 | |
| 1.7 to 2.0 |
| Niobium (Nb), % | 0.1 to 0.5 | |
| 0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.035 |
| Silicon (Si), % | 0 to 0.2 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.040 |
| Titanium (Ti), % | 1.0 to 1.4 | |
| 0 |