SAE-AISI H21 Steel vs. K94200 Alloy
Both SAE-AISI H21 steel and K94200 alloy are iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI H21 steel and the bottom bar is K94200 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 140 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 76 | |
| 54 |
| Tensile Strength: Ultimate (UTS), MPa | 720 to 1790 | |
| 500 to 710 |
Thermal Properties
| Melting Onset (Solidus), °C | 1580 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 500 |
| Thermal Conductivity, W/m-K | 27 | |
| 15 |
| Thermal Expansion, µm/m-K | 11 | |
| 5.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.5 | |
| 8.2 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 9.8 |
| Stiffness to Weight: Bending, points | 23 | |
| 21 |
| Strength to Weight: Axial, points | 23 to 58 | |
| 17 to 24 |
| Strength to Weight: Bending, points | 21 to 38 | |
| 17 to 22 |
| Thermal Diffusivity, mm2/s | 7.1 | |
| 3.7 |
| Thermal Shock Resistance, points | 24 to 59 | |
| 49 to 70 |