ASTM A372 Grade J Steel vs. Grade N7M Nickel
ASTM A372 grade J steel belongs to the iron alloys classification, while grade N7M nickel belongs to the nickel alloys. There are 25 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 ASTM A372 grade J steel and the bottom bar is grade N7M nickel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 220 |
| Elongation at Break, % | 17 to 22 | |
| 22 |
| Fatigue Strength, MPa | 310 to 570 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 73 | |
| 85 |
| Tensile Strength: Ultimate (UTS), MPa | 650 to 1020 | |
| 590 |
| Tensile Strength: Yield (Proof), MPa | 430 to 850 | |
| 310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 420 | |
| 900 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1650 |
| Melting Onset (Solidus), °C | 1420 | |
| 1590 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 390 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.4 | |
| 75 |
| Density, g/cm3 | 7.8 | |
| 9.3 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 16 |
| Embodied Energy, MJ/kg | 20 | |
| 200 |
| Embodied Water, L/kg | 51 | |
| 270 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 170 | |
| 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 500 to 1930 | |
| 220 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 22 |
| Strength to Weight: Axial, points | 23 to 36 | |
| 18 |
| Strength to Weight: Bending, points | 21 to 29 | |
| 17 |
| Thermal Shock Resistance, points | 19 to 30 | |
| 19 |
Alloy Composition
| Carbon (C), % | 0.35 to 0.5 | |
| 0 to 0.070 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 0 to 1.0 |
| Iron (Fe), % | 96.7 to 97.8 | |
| 0 to 3.0 |
| Manganese (Mn), % | 0.75 to 1.1 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 30 to 33 |
| Nickel (Ni), % | 0 | |
| 60.9 to 70 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.030 |