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