ASTM A266 Carbon Steel vs. S21800 Stainless Steel
Both ASTM A266 carbon steel and S21800 stainless steel are iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is ASTM A266 carbon steel and the bottom bar is S21800 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 180 | |
| 210 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 21 to 26 | |
| 40 |
| Fatigue Strength, MPa | 170 to 200 | |
| 330 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 34 to 43 | |
| 62 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Shear Strength, MPa | 320 to 380 | |
| 510 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 600 | |
| 740 |
| Tensile Strength: Yield (Proof), MPa | 230 to 290 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 340 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 900 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1360 |
| Melting Onset (Solidus), °C | 1420 | |
| 1310 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 500 |
| Thermal Expansion, µm/m-K | 12 | |
| 16 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 15 |
| Density, g/cm3 | 7.8 | |
| 7.5 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 3.1 |
| Embodied Energy, MJ/kg | 18 to 19 | |
| 45 |
| Embodied Water, L/kg | 46 to 47 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 | |
| 250 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 230 | |
| 390 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 26 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 27 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 24 |
| Thermal Shock Resistance, points | 16 to 19 | |
| 17 |