ACI-ASTM CA6NM Steel vs. AISI 440B Stainless Steel
Both ACI-ASTM CA6NM steel and AISI 440B stainless steel are iron alloys. They have a moderately high 95% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CA6NM steel and the bottom bar is AISI 440B stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
200 |
Elongation at Break, % | 17 | |
3.0 to 18 |
Fatigue Strength, MPa | 380 | |
260 to 850 |
Poisson's Ratio | 0.28 | |
0.28 |
Shear Modulus, GPa | 76 | |
77 |
Tensile Strength: Ultimate (UTS), MPa | 850 | |
740 to 1930 |
Tensile Strength: Yield (Proof), MPa | 620 | |
430 to 1860 |
Thermal Properties
Latent Heat of Fusion, J/g | 280 | |
280 |
Maximum Temperature: Corrosion, °C | 390 | |
390 |
Maximum Temperature: Mechanical, °C | 770 | |
870 |
Melting Completion (Liquidus), °C | 1450 | |
1480 |
Melting Onset (Solidus), °C | 1400 | |
1370 |
Specific Heat Capacity, J/kg-K | 480 | |
480 |
Thermal Conductivity, W/m-K | 25 | |
23 |
Thermal Expansion, µm/m-K | 10 | |
10 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 2.8 | |
2.5 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 3.2 | |
2.9 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 10 | |
9.0 |
Density, g/cm3 | 7.8 | |
7.7 |
Embodied Carbon, kg CO2/kg material | 2.5 | |
2.2 |
Embodied Energy, MJ/kg | 34 | |
31 |
Embodied Water, L/kg | 110 | |
120 |
Common Calculations
PREN (Pitting Resistance) | 15 | |
18 |
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 | |
57 to 110 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
25 |
Strength to Weight: Axial, points | 30 | |
27 to 70 |
Strength to Weight: Bending, points | 26 | |
24 to 45 |
Thermal Diffusivity, mm2/s | 6.7 | |
6.1 |
Thermal Shock Resistance, points | 31 | |
27 to 70 |
Alloy Composition
Carbon (C), % | 0 to 0.060 | |
0.75 to 1.0 |
Chromium (Cr), % | 11.5 to 14 | |
16 to 18 |
Iron (Fe), % | 78.4 to 84.6 | |
78.2 to 83.3 |
Manganese (Mn), % | 0 to 1.0 | |
0 to 1.0 |
Molybdenum (Mo), % | 0.4 to 1.0 | |
0 to 0.75 |
Nickel (Ni), % | 3.5 to 4.5 | |
0 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.040 |
Silicon (Si), % | 0 to 1.0 | |
0 to 1.0 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.015 |