R30556 Alloy vs. S17400 Stainless Steel
Both R30556 alloy and S17400 stainless steel are iron alloys. They have 51% of their average alloy composition in common. There are 32 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 R30556 alloy and the bottom bar is S17400 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 190 |
| Elongation at Break, % | 45 | |
| 11 to 21 |
| Fatigue Strength, MPa | 320 | |
| 380 to 670 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 81 | |
| 75 |
| Shear Strength, MPa | 550 | |
| 570 to 830 |
| Tensile Strength: Ultimate (UTS), MPa | 780 | |
| 910 to 1390 |
| Tensile Strength: Yield (Proof), MPa | 350 | |
| 580 to 1250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 300 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 450 | |
| 450 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 850 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1440 |
| Melting Onset (Solidus), °C | 1330 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 480 |
| Thermal Conductivity, W/m-K | 11 | |
| 17 |
| Thermal Expansion, µm/m-K | 15 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.8 | |
| 2.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.9 | |
| 2.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 70 | |
| 14 |
| Density, g/cm3 | 8.4 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 8.7 | |
| 2.7 |
| Embodied Energy, MJ/kg | 130 | |
| 39 |
| Embodied Water, L/kg | 300 | |
| 130 |
Common Calculations
| PREN (Pitting Resistance) | 40 | |
| 16 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 290 | |
| 140 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 290 | |
| 880 to 4060 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 26 | |
| 32 to 49 |
| Strength to Weight: Bending, points | 22 | |
| 27 to 35 |
| Thermal Diffusivity, mm2/s | 2.9 | |
| 4.5 |
| Thermal Shock Resistance, points | 18 | |
| 30 to 46 |
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 to 0.070 |
| Chromium (Cr), % | 21 to 23 | |
| 15 to 17 |
| Cobalt (Co), % | 16 to 21 | |
| 0 |
| Copper (Cu), % | 0 | |
| 3.0 to 5.0 |
| Iron (Fe), % | 20.4 to 38.2 | |
| 70.4 to 78.9 |
| Lanthanum (La), % | 0.0050 to 0.1 | |
| 0 |
| Manganese (Mn), % | 0.5 to 2.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 2.5 to 4.0 | |
| 0 |
| Nickel (Ni), % | 19 to 22.5 | |
| 3.0 to 5.0 |
| Niobium (Nb), % | 0 to 0.3 | |
| 0.15 to 0.45 |
| Nitrogen (N), % | 0.1 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.2 to 0.8 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0.3 to 1.3 | |
| 0 |
| Tungsten (W), % | 2.0 to 3.5 | |
| 0 |
| Zinc (Zn), % | 0.0010 to 0.1 | |
| 0 |