ACI-ASTM CB6 Steel vs. ACI-ASTM CA6N Steel
Both ACI-ASTM CB6 steel and ACI-ASTM CA6N steel are iron alloys. Both are furnished in the heat treated (HT) condition. They have a moderately high 95% of their average alloy composition in common.
For each property being compared, the top bar is ACI-ASTM CB6 steel and the bottom bar is ACI-ASTM CA6N steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 18 | |
| 17 |
| Fatigue Strength, MPa | 410 | |
| 640 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Reduction in Area, % | 40 | |
| 57 |
| Shear Modulus, GPa | 77 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 880 | |
| 1080 |
| Tensile Strength: Yield (Proof), MPa | 660 | |
| 1060 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 410 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 870 | |
| 740 |
| Melting Completion (Liquidus), °C | 1440 | |
| 1440 |
| Melting Onset (Solidus), °C | 1390 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 17 | |
| 23 |
| Thermal Expansion, µm/m-K | 10 | |
| 9.9 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 2.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.6 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 11 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.5 | |
| 2.5 |
| Embodied Energy, MJ/kg | 36 | |
| 35 |
| Embodied Water, L/kg | 130 | |
| 110 |
Common Calculations
| PREN (Pitting Resistance) | 17 | |
| 12 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 150 | |
| 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1110 | |
| 2900 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 32 | |
| 38 |
| Strength to Weight: Bending, points | 26 | |
| 30 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 6.1 |
| Thermal Shock Resistance, points | 31 | |
| 40 |
Alloy Composition
| Carbon (C), % | 0 to 0.060 | |
| 0 to 0.060 |
| Chromium (Cr), % | 15.5 to 17.5 | |
| 10.5 to 12.5 |
| Iron (Fe), % | 74.4 to 81 | |
| 77.9 to 83.5 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 0.5 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 6.0 to 8.0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.020 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.020 |