EN 1.6580 Steel vs. AISI 321 Stainless Steel
Both EN 1.6580 steel and AISI 321 stainless steel are iron alloys. They have 74% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is EN 1.6580 steel and the bottom bar is AISI 321 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 350 | |
| 170 to 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 11 to 19 | |
| 34 to 50 |
| Fatigue Strength, MPa | 310 to 610 | |
| 220 to 270 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 77 |
| Shear Strength, MPa | 450 to 700 | |
| 420 to 460 |
| Tensile Strength: Ultimate (UTS), MPa | 720 to 1170 | |
| 590 to 690 |
| Tensile Strength: Yield (Proof), MPa | 460 to 990 | |
| 220 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 450 | |
| 870 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1430 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 40 | |
| 16 |
| Thermal Expansion, µm/m-K | 13 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.8 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.9 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.3 | |
| 16 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 3.2 |
| Embodied Energy, MJ/kg | 23 | |
| 45 |
| Embodied Water, L/kg | 59 | |
| 140 |
Common Calculations
| PREN (Pitting Resistance) | 3.3 | |
| 19 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 to 130 | |
| 190 to 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 560 to 2590 | |
| 130 to 310 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 26 to 41 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 23 to 31 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 11 | |
| 4.1 |
| Thermal Shock Resistance, points | 21 to 34 | |
| 13 to 15 |
Alloy Composition
| Carbon (C), % | 0.26 to 0.34 | |
| 0 to 0.080 |
| Chromium (Cr), % | 1.8 to 2.2 | |
| 17 to 19 |
| Iron (Fe), % | 93.7 to 95.5 | |
| 65.3 to 74 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0.3 to 0.5 | |
| 0 |
| Nickel (Ni), % | 1.8 to 2.2 | |
| 9.0 to 12 |
| Nitrogen (N), % | 0 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.035 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 0 to 0.7 |