SAE-AISI 4340M Steel vs. S13800 Stainless Steel
Both SAE-AISI 4340M steel and S13800 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 33 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 4340M steel and the bottom bar is S13800 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 710 | |
| 290 to 480 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 6.0 | |
| 11 to 18 |
| Fatigue Strength, MPa | 690 | |
| 410 to 870 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Rockwell C Hardness | 55 | |
| 30 to 51 |
| Shear Modulus, GPa | 72 | |
| 77 |
| Shear Strength, MPa | 1360 | |
| 610 to 1030 |
| Tensile Strength: Ultimate (UTS), MPa | 2340 | |
| 980 to 1730 |
| Tensile Strength: Yield (Proof), MPa | 1240 | |
| 660 to 1580 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 810 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1450 |
| Melting Onset (Solidus), °C | 1400 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 38 | |
| 16 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.8 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.1 | |
| 2.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.9 | |
| 15 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 3.4 |
| Embodied Energy, MJ/kg | 26 | |
| 46 |
| Embodied Water, L/kg | 55 | |
| 140 |
Common Calculations
| PREN (Pitting Resistance) | 2.2 | |
| 21 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 150 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 4120 | |
| 1090 to 5490 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 84 | |
| 35 to 61 |
| Strength to Weight: Bending, points | 51 | |
| 28 to 41 |
| Thermal Diffusivity, mm2/s | 10 | |
| 4.3 |
| Thermal Shock Resistance, points | 70 | |
| 33 to 58 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0.9 to 1.4 |
| Carbon (C), % | 0.38 to 0.43 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0.7 to 1.0 | |
| 12.3 to 13.2 |
| Iron (Fe), % | 93.3 to 94.8 | |
| 73.6 to 77.3 |
| Manganese (Mn), % | 0.65 to 0.9 | |
| 0 to 0.2 |
| Molybdenum (Mo), % | 0.35 to 0.45 | |
| 2.0 to 3.0 |
| Nickel (Ni), % | 1.7 to 2.0 | |
| 7.5 to 8.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Phosphorus (P), % | 0 to 0.012 | |
| 0 to 0.010 |
| Silicon (Si), % | 1.5 to 1.8 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.012 | |
| 0 to 0.0080 |
| Vanadium (V), % | 0.050 to 0.1 | |
| 0 |