Nickel Beryllium 360 vs. ASTM A387 Grade 21 Steel
Nickel beryllium 360 belongs to the nickel alloys classification, while ASTM A387 grade 21 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is nickel beryllium 360 and the bottom bar is ASTM A387 grade 21 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 1.0 to 30 | |
| 21 |
| Fatigue Strength, MPa | 260 to 710 | |
| 160 to 250 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 74 |
| Shear Strength, MPa | 510 to 1100 | |
| 310 to 370 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 1860 | |
| 500 to 590 |
| Tensile Strength: Yield (Proof), MPa | 380 to 1590 | |
| 230 to 350 |
Thermal Properties
| Melting Completion (Liquidus), °C | 1330 | |
| 1470 |
| Melting Onset (Solidus), °C | 1200 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 470 |
| Thermal Conductivity, W/m-K | 48 | |
| 41 |
| Thermal Expansion, µm/m-K | 14 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 5.0 | |
| 7.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.4 | |
| 8.8 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.3 | |
| 7.9 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 12 to 190 | |
| 84 to 110 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 to 3440 | |
| 140 to 320 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 26 to 62 | |
| 18 to 21 |
| Strength to Weight: Bending, points | 23 to 41 | |
| 18 to 20 |
| Thermal Diffusivity, mm2/s | 13 | |
| 11 |
| Thermal Shock Resistance, points | 19 to 46 | |
| 14 to 17 |