ACI-ASTM CB7Cu-2 Steel vs. S17400 Stainless Steel
Both ACI-ASTM CB7Cu-2 steel and S17400 stainless steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is ACI-ASTM CB7Cu-2 steel and the bottom bar is S17400 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 300 to 420 | |
| 280 to 440 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 5.7 to 11 | |
| 11 to 21 |
| Fatigue Strength, MPa | 420 to 590 | |
| 380 to 670 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 75 | |
| 75 |
| Tensile Strength: Ultimate (UTS), MPa | 960 to 1350 | |
| 910 to 1390 |
| Tensile Strength: Yield (Proof), MPa | 760 to 1180 | |
| 580 to 1250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1440 |
| Melting Onset (Solidus), °C | 1380 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 17 | |
| 17 |
| Thermal Expansion, µm/m-K | 11 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.1 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.4 | |
| 2.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 14 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.6 | |
| 2.7 |
| Embodied Energy, MJ/kg | 38 | |
| 39 |
| Embodied Water, L/kg | 130 | |
| 130 |
Common Calculations
| PREN (Pitting Resistance) | 15 | |
| 16 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 120 | |
| 140 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1510 to 3600 | |
| 880 to 4060 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 34 to 48 | |
| 32 to 49 |
| Strength to Weight: Bending, points | 28 to 35 | |
| 27 to 35 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 4.5 |
| Thermal Shock Resistance, points | 32 to 45 | |
| 30 to 46 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.070 |
| Chromium (Cr), % | 14 to 15.5 | |
| 15 to 17 |
| Copper (Cu), % | 2.5 to 3.2 | |
| 3.0 to 5.0 |
| Iron (Fe), % | 73.6 to 79 | |
| 70.4 to 78.9 |
| Manganese (Mn), % | 0 to 0.7 | |
| 0 to 1.0 |
| Nickel (Ni), % | 4.5 to 5.5 | |
| 3.0 to 5.0 |
| Niobium (Nb), % | 0 to 0.35 | |
| 0.15 to 0.45 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |