ACI-ASTM CA15M Steel vs. ACI-ASTM CA6NM Steel
Both ACI-ASTM CA15M steel and ACI-ASTM CA6NM steel are iron alloys. Both are furnished in the heat treated (HT) condition. They have a very high 96% of their average alloy composition in common.
For each property being compared, the top bar is ACI-ASTM CA15M steel and the bottom bar is ACI-ASTM CA6NM steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 | |
| 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 20 | |
| 17 |
| Fatigue Strength, MPa | 330 | |
| 380 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Reduction in Area, % | 34 | |
| 40 |
| Shear Modulus, GPa | 76 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 690 | |
| 850 |
| Tensile Strength: Yield (Proof), MPa | 510 | |
| 620 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 390 | |
| 390 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 770 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1450 |
| Melting Onset (Solidus), °C | 1410 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 27 | |
| 25 |
| Thermal Expansion, µm/m-K | 10 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 3.0 | |
| 2.8 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.5 | |
| 3.2 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 7.5 | |
| 10 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.1 | |
| 2.5 |
| Embodied Energy, MJ/kg | 29 | |
| 34 |
| Embodied Water, L/kg | 100 | |
| 110 |
Common Calculations
| PREN (Pitting Resistance) | 15 | |
| 15 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 | |
| 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 670 | |
| 1000 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 25 | |
| 30 |
| Strength to Weight: Bending, points | 22 | |
| 26 |
| Thermal Diffusivity, mm2/s | 7.2 | |
| 6.7 |
| Thermal Shock Resistance, points | 25 | |
| 31 |
Alloy Composition
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.060 |
| Chromium (Cr), % | 11.5 to 14 | |
| 11.5 to 14 |
| Iron (Fe), % | 82.1 to 88.4 | |
| 78.4 to 84.6 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0.15 to 1.0 | |
| 0.4 to 1.0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 3.5 to 4.5 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.65 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |