SAE-AISI 4130 Steel vs. AISI 316 Stainless Steel
Both SAE-AISI 4130 steel and AISI 316 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 4130 steel and the bottom bar is AISI 316 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 300 | |
| 160 to 360 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 13 to 26 | |
| 8.0 to 55 |
| Fatigue Strength, MPa | 320 to 660 | |
| 210 to 430 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 78 |
| Shear Strength, MPa | 340 to 640 | |
| 350 to 690 |
| Tensile Strength: Ultimate (UTS), MPa | 530 to 1040 | |
| 520 to 1180 |
| Tensile Strength: Yield (Proof), MPa | 440 to 980 | |
| 230 to 850 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 590 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1400 |
| Melting Onset (Solidus), °C | 1420 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 43 | |
| 15 |
| Thermal Expansion, µm/m-K | 13 | |
| 16 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 2.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 | |
| 19 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 3.9 |
| Embodied Energy, MJ/kg | 20 | |
| 53 |
| Embodied Water, L/kg | 50 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 83 to 180 | |
| 85 to 260 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 500 to 2550 | |
| 130 to 1820 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 19 to 37 | |
| 18 to 41 |
| Strength to Weight: Bending, points | 19 to 29 | |
| 18 to 31 |
| Thermal Diffusivity, mm2/s | 12 | |
| 4.1 |
| Thermal Shock Resistance, points | 16 to 31 | |
| 11 to 26 |
Alloy Composition
| Carbon (C), % | 0.28 to 0.33 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0.8 to 1.1 | |
| 16 to 18 |
| Iron (Fe), % | 97.3 to 98.2 | |
| 62 to 72 |
| Manganese (Mn), % | 0.4 to 0.6 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 2.0 to 3.0 |
| Nickel (Ni), % | 0 | |
| 10 to 14 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.045 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |