S21904 Stainless Steel vs. ASTM A148 Cast Steel
Both S21904 stainless steel and ASTM A148 cast steel are iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is S21904 stainless steel and the bottom bar is ASTM A148 cast steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 to 300 | |
| 190 to 390 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 17 to 51 | |
| 5.7 to 25 |
| Fatigue Strength, MPa | 380 to 550 | |
| 280 to 670 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 78 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 1000 | |
| 630 to 1300 |
| Tensile Strength: Yield (Proof), MPa | 390 to 910 | |
| 390 to 1160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 980 | |
| 400 to 430 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1460 |
| Melting Onset (Solidus), °C | 1350 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 14 | |
| 37 to 47 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 7.3 to 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 8.3 to 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 15 | |
| 2.3 to 3.3 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.0 | |
| 1.5 to 1.7 |
| Embodied Energy, MJ/kg | 43 | |
| 20 to 22 |
| Embodied Water, L/kg | 160 | |
| 48 to 53 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 160 to 310 | |
| 71 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 380 to 2070 | |
| 400 to 3570 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 25 to 36 | |
| 22 to 46 |
| Strength to Weight: Bending, points | 23 to 29 | |
| 21 to 34 |
| Thermal Diffusivity, mm2/s | 3.8 | |
| 9.9 to 13 |
| Thermal Shock Resistance, points | 15 to 21 | |
| 18 to 38 |