S21904 Stainless Steel vs. AWS E308LMo
Both S21904 stainless steel and AWS E308LMo are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is S21904 stainless steel and the bottom bar is AWS E308LMo.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 17 to 51 | |
| 40 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 78 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 1000 | |
| 580 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 290 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1440 |
| Melting Onset (Solidus), °C | 1350 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 14 | |
| 16 |
| Thermal Expansion, µm/m-K | 17 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 2.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 2.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 19 |
| Density, g/cm3 | 7.7 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 3.8 |
| Embodied Energy, MJ/kg | 43 | |
| 53 |
| Embodied Water, L/kg | 160 | |
| 160 |
Common Calculations
| PREN (Pitting Resistance) | 25 | |
| 28 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 36 | |
| 21 |
| Strength to Weight: Bending, points | 23 to 29 | |
| 20 |
| Thermal Diffusivity, mm2/s | 3.8 | |
| 4.2 |
| Thermal Shock Resistance, points | 15 to 21 | |
| 15 |
Alloy Composition
| Carbon (C), % | 0 to 0.040 | |
| 0 to 0.040 |
| Chromium (Cr), % | 19 to 21.5 | |
| 18 to 21 |
| Copper (Cu), % | 0 | |
| 0 to 0.75 |
| Iron (Fe), % | 59.5 to 67.4 | |
| 59.6 to 70.5 |
| Manganese (Mn), % | 8.0 to 10 | |
| 0.5 to 2.5 |
| Molybdenum (Mo), % | 0 | |
| 2.0 to 3.0 |
| Nickel (Ni), % | 5.5 to 7.5 | |
| 9.0 to 12 |
| Nitrogen (N), % | 0.15 to 0.4 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |