ASTM A387 Grade 21 Steel vs. Nickel 601
ASTM A387 grade 21 steel belongs to the iron alloys classification, while nickel 601 belongs to the nickel alloys. There are 30 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 ASTM A387 grade 21 steel and the bottom bar is nickel 601.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 21 | |
| 10 to 38 |
| Fatigue Strength, MPa | 160 to 250 | |
| 220 to 380 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 74 | |
| 76 |
| Shear Strength, MPa | 310 to 370 | |
| 440 to 530 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 590 | |
| 660 to 890 |
| Tensile Strength: Yield (Proof), MPa | 230 to 350 | |
| 290 to 800 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 320 |
| Maximum Temperature: Mechanical, °C | 480 | |
| 1100 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1410 |
| Melting Onset (Solidus), °C | 1430 | |
| 1360 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 41 | |
| 11 |
| Thermal Expansion, µm/m-K | 13 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 1.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 | |
| 1.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 4.1 | |
| 49 |
| Density, g/cm3 | 7.9 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 1.8 | |
| 8.0 |
| Embodied Energy, MJ/kg | 23 | |
| 110 |
| Embodied Water, L/kg | 62 | |
| 280 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 to 110 | |
| 86 to 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 320 | |
| 210 to 1630 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 22 to 30 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 20 to 25 |
| Thermal Diffusivity, mm2/s | 11 | |
| 2.8 |
| Thermal Shock Resistance, points | 14 to 17 | |
| 17 to 23 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 1.0 to 1.7 |
| Carbon (C), % | 0.050 to 0.15 | |
| 0 to 0.1 |
| Chromium (Cr), % | 2.8 to 3.3 | |
| 21 to 25 |
| Copper (Cu), % | 0 | |
| 0 to 1.0 |
| Iron (Fe), % | 94.4 to 96 | |
| 7.7 to 20 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0.9 to 1.1 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 58 to 63 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.025 | |
| 0 to 0.015 |