R30556 Alloy vs. EN 1.7380 Steel
Both R30556 alloy and EN 1.7380 steel are iron alloys. They have a modest 34% of their average alloy composition in common, which, by itself, doesn't mean much. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is R30556 alloy and the bottom bar is EN 1.7380 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 45 | |
| 19 to 20 |
| Fatigue Strength, MPa | 320 | |
| 200 to 230 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 81 | |
| 74 |
| Shear Strength, MPa | 550 | |
| 330 to 350 |
| Tensile Strength: Ultimate (UTS), MPa | 780 | |
| 540 to 550 |
| Tensile Strength: Yield (Proof), MPa | 350 | |
| 290 to 330 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 260 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 460 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1470 |
| Melting Onset (Solidus), °C | 1330 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 470 |
| Thermal Conductivity, W/m-K | 11 | |
| 39 |
| Thermal Expansion, µm/m-K | 15 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.8 | |
| 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.9 | |
| 8.7 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 70 | |
| 3.8 |
| Density, g/cm3 | 8.4 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 8.7 | |
| 1.8 |
| Embodied Energy, MJ/kg | 130 | |
| 23 |
| Embodied Water, L/kg | 300 | |
| 59 |
Common Calculations
| PREN (Pitting Resistance) | 40 | |
| 5.6 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 290 | |
| 87 to 98 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 290 | |
| 230 to 280 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 26 | |
| 19 to 20 |
| Strength to Weight: Bending, points | 22 | |
| 19 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 11 |
| Thermal Shock Resistance, points | 18 | |
| 15 to 16 |
Alloy Composition
| Aluminum (Al), % | 0.1 to 0.5 | |
| 0 |
| Boron (B), % | 0 to 0.020 | |
| 0 |
| Carbon (C), % | 0.050 to 0.15 | |
| 0.080 to 0.14 |
| Chromium (Cr), % | 21 to 23 | |
| 2.0 to 2.5 |
| Cobalt (Co), % | 16 to 21 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 20.4 to 38.2 | |
| 94.6 to 96.6 |
| Lanthanum (La), % | 0.0050 to 0.1 | |
| 0 |
| Manganese (Mn), % | 0.5 to 2.0 | |
| 0.4 to 0.8 |
| Molybdenum (Mo), % | 2.5 to 4.0 | |
| 0.9 to 1.1 |
| Nickel (Ni), % | 19 to 22.5 | |
| 0 |
| Niobium (Nb), % | 0 to 0.3 | |
| 0 |
| Nitrogen (N), % | 0.1 to 0.3 | |
| 0 to 0.012 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.020 |
| Silicon (Si), % | 0.2 to 0.8 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.010 |
| Tantalum (Ta), % | 0.3 to 1.3 | |
| 0 |
| Tungsten (W), % | 2.0 to 3.5 | |
| 0 |
| Zinc (Zn), % | 0.0010 to 0.1 | |
| 0 |