ASTM A387 Grade 21 Steel vs. K93600 Alloy
Both ASTM A387 grade 21 steel and K93600 alloy are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, 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 K93600 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 140 |
| Elongation at Break, % | 21 | |
| 5.0 to 35 |
| Shear Strength, MPa | 310 to 370 | |
| 320 to 380 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 590 | |
| 480 to 810 |
| Tensile Strength: Yield (Proof), MPa | 230 to 350 | |
| 280 to 750 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 480 | |
| 440 |
| Melting Onset (Solidus), °C | 1430 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 520 |
| Thermal Conductivity, W/m-K | 41 | |
| 13 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.3 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.6 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.8 | |
| 2.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 8.1 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 to 110 | |
| 21 to 280 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 320 | |
| 280 to 2050 |
| Stiffness to Weight: Axial, points | 13 | |
| 9.4 |
| Stiffness to Weight: Bending, points | 24 | |
| 21 |
| Strength to Weight: Axial, points | 18 to 21 | |
| 16 to 28 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 17 to 24 |
| Thermal Diffusivity, mm2/s | 11 | |
| 3.1 |
| Thermal Shock Resistance, points | 14 to 17 | |
| 34 to 57 |