EN 1.7077 Steel vs. Grade FDSiCr Steel
Both EN 1.7077 steel and grade FDSiCr steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is EN 1.7077 steel and the bottom bar is grade FDSiCr steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 180 | |
| 580 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 63 to 68 | |
| 42 |
| Shear Modulus, GPa | 73 | |
| 80 |
| Tensile Strength: Ultimate (UTS), MPa | 490 to 1750 | |
| 1930 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 410 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 45 | |
| 48 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.4 | |
| 8.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 2.2 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.5 |
| Embodied Energy, MJ/kg | 19 | |
| 20 |
| Embodied Water, L/kg | 51 | |
| 48 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 17 to 62 | |
| 69 |
| Strength to Weight: Bending, points | 18 to 41 | |
| 44 |
| Thermal Diffusivity, mm2/s | 12 | |
| 13 |
| Thermal Shock Resistance, points | 14 to 51 | |
| 58 |
Alloy Composition
| Boron (B), % | 0.00080 to 0.0050 | |
| 0 |
| Carbon (C), % | 0.34 to 0.38 | |
| 0.5 to 0.6 |
| Chromium (Cr), % | 0.9 to 1.2 | |
| 0.5 to 0.8 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 to 0.12 |
| Iron (Fe), % | 96.8 to 98.1 | |
| 96.5 to 97.8 |
| Manganese (Mn), % | 0.7 to 1.0 | |
| 0.5 to 0.9 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.030 |
| Silicon (Si), % | 0 to 0.3 | |
| 1.2 to 1.6 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.025 |