AISI 304 Stainless Steel vs. AISI 304L Stainless Steel
Both AISI 304 stainless steel and AISI 304L stainless steel are iron alloys. Their average alloy composition is basically identical. There are 34 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 AISI 304 stainless steel and the bottom bar is AISI 304L stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 170 to 360 | |
| 160 to 350 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 8.0 to 43 | |
| 6.7 to 46 |
| Fatigue Strength, MPa | 210 to 440 | |
| 170 to 430 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 77 |
| Shear Strength, MPa | 400 to 690 | |
| 370 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 580 to 1180 | |
| 540 to 1160 |
| Tensile Strength: Yield (Proof), MPa | 230 to 860 | |
| 190 to 870 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 290 |
| Maximum Temperature: Corrosion, °C | 420 | |
| 420 |
| Maximum Temperature: Mechanical, °C | 710 | |
| 540 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1450 |
| Melting Onset (Solidus), °C | 1400 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 16 | |
| 16 |
| Thermal Expansion, µm/m-K | 17 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.4 | |
| 2.4 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.7 | |
| 2.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 16 |
| Calomel Potential, mV | -80 | |
| -80 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 3.1 |
| Embodied Energy, MJ/kg | 43 | |
| 44 |
| Embodied Water, L/kg | 150 | |
| 150 |
Common Calculations
| PREN (Pitting Resistance) | 20 | |
| 20 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 86 to 250 | |
| 71 to 240 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 1870 | |
| 92 to 1900 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 21 to 42 | |
| 19 to 41 |
| Strength to Weight: Bending, points | 20 to 32 | |
| 19 to 31 |
| Thermal Diffusivity, mm2/s | 4.2 | |
| 4.2 |
| Thermal Shock Resistance, points | 12 to 25 | |
| 12 to 25 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.030 |
| Chromium (Cr), % | 18 to 20 | |
| 18 to 20 |
| Iron (Fe), % | 66.5 to 74 | |
| 65 to 74 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 2.0 |
| Nickel (Ni), % | 8.0 to 10.5 | |
| 8.0 to 12 |
| Nitrogen (N), % | 0 to 0.1 | |
| 0 to 0.1 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.75 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |