ACI-ASTM CK20 Steel vs. AISI 310 Stainless Steel
Both ACI-ASTM CK20 steel and AISI 310 stainless steel are iron alloys. Their average alloy composition is basically identical. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is AISI 310 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 | |
| 180 to 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 37 | |
| 34 to 45 |
| Fatigue Strength, MPa | 220 | |
| 240 to 280 |
| Poisson's Ratio | 0.28 | |
| 0.27 |
| Shear Modulus, GPa | 78 | |
| 78 |
| Tensile Strength: Ultimate (UTS), MPa | 530 | |
| 600 to 710 |
| Tensile Strength: Yield (Proof), MPa | 260 | |
| 260 to 350 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 310 |
| Maximum Temperature: Corrosion, °C | 440 | |
| 440 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 1040 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1450 |
| Melting Onset (Solidus), °C | 1430 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 14 | |
| 15 |
| Thermal Expansion, µm/m-K | 15 | |
| 15 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.3 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 25 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 4.4 | |
| 4.3 |
| Embodied Energy, MJ/kg | 62 | |
| 61 |
| Embodied Water, L/kg | 190 | |
| 190 |
Common Calculations
| PREN (Pitting Resistance) | 26 | |
| 25 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 160 | |
| 200 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 170 | |
| 170 to 310 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 19 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 19 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 3.7 | |
| 3.9 |
| Thermal Shock Resistance, points | 13 | |
| 14 to 17 |
Alloy Composition
| Carbon (C), % | 0 to 0.2 | |
| 0 to 0.25 |
| Chromium (Cr), % | 23 to 27 | |
| 24 to 26 |
| Iron (Fe), % | 46.7 to 58 | |
| 48.2 to 57 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 2.0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 19 to 22 | |
| 19 to 22 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 to 1.5 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |