SAE-AISI 6150 Steel vs. AISI 321 Stainless Steel
Both SAE-AISI 6150 steel and AISI 321 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 6150 steel and the bottom bar is AISI 321 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 350 | |
| 170 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 15 to 23 | |
| 34 to 50 |
| Fatigue Strength, MPa | 300 to 750 | |
| 220 to 270 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Shear Strength, MPa | 400 to 730 | |
| 420 to 460 |
| Tensile Strength: Ultimate (UTS), MPa | 630 to 1200 | |
| 590 to 690 |
| Tensile Strength: Yield (Proof), MPa | 420 to 1160 | |
| 220 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 870 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1410 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 46 | |
| 16 |
| Thermal Expansion, µm/m-K | 12 to 13 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 16 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.0 | |
| 3.2 |
| Embodied Energy, MJ/kg | 28 | |
| 45 |
| Embodied Water, L/kg | 51 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 180 | |
| 190 to 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 to 3590 | |
| 130 to 310 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 22 to 43 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 21 to 32 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 13 | |
| 4.1 |
| Thermal Shock Resistance, points | 20 to 38 | |
| 13 to 15 |
Alloy Composition
| Carbon (C), % | 0.48 to 0.53 | |
| 0 to 0.080 |
| Chromium (Cr), % | 0.8 to 1.1 | |
| 17 to 19 |
| Iron (Fe), % | 96.7 to 97.7 | |
| 65.3 to 74 |
| Manganese (Mn), % | 0.7 to 0.9 | |
| 0 to 2.0 |
| Nickel (Ni), % | 0 | |
| 9.0 to 12 |
| 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 |
| Titanium (Ti), % | 0 | |
| 0 to 0.7 |
| Vanadium (V), % | 0.15 to 0.3 | |
| 0 |