ASTM Grade HH Steel vs. N08120 Nickel
ASTM grade HH steel belongs to the iron alloys classification, while N08120 nickel belongs to the nickel alloys. They have 70% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is ASTM grade HH steel and the bottom bar is N08120 nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 200 |
| Elongation at Break, % | 11 | |
| 34 |
| Fatigue Strength, MPa | 150 | |
| 230 |
| Poisson's Ratio | 0.27 | |
| 0.28 |
| Shear Modulus, GPa | 79 | |
| 79 |
| Tensile Strength: Ultimate (UTS), MPa | 580 | |
| 700 |
| Tensile Strength: Yield (Proof), MPa | 270 | |
| 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 310 |
| Maximum Temperature: Mechanical, °C | 1100 | |
| 1000 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1420 |
| Melting Onset (Solidus), °C | 1360 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 14 | |
| 11 |
| Thermal Expansion, µm/m-K | 17 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 20 | |
| 45 |
| Density, g/cm3 | 7.7 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 3.7 | |
| 7.2 |
| Embodied Energy, MJ/kg | 53 | |
| 100 |
| Embodied Water, L/kg | 180 | |
| 240 |
Common Calculations
| PREN (Pitting Resistance) | 27 | |
| 35 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 53 | |
| 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 190 | |
| 240 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 21 | |
| 24 |
| Strength to Weight: Bending, points | 20 | |
| 21 |
| Thermal Diffusivity, mm2/s | 3.8 | |
| 3.0 |
| Thermal Shock Resistance, points | 12 | |
| 17 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 0 to 0.4 |
| Boron (B), % | 0 | |
| 0 to 0.010 |
| Carbon (C), % | 0.2 to 0.5 | |
| 0.020 to 0.1 |
| Chromium (Cr), % | 24 to 28 | |
| 23 to 27 |
| Cobalt (Co), % | 0 | |
| 0 to 3.0 |
| Copper (Cu), % | 0 | |
| 0 to 0.5 |
| Iron (Fe), % | 52.9 to 64.8 | |
| 21 to 41.4 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 to 2.5 |
| Nickel (Ni), % | 11 to 14 | |
| 35 to 39 |
| Niobium (Nb), % | 0 | |
| 0.4 to 0.9 |
| Nitrogen (N), % | 0 | |
| 0.15 to 0.3 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 0 to 0.2 |
| Tungsten (W), % | 0 | |
| 0 to 2.5 |