K94200 Alloy vs. SAE-AISI 4140 Steel
Both K94200 alloy and SAE-AISI 4140 steel are iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is K94200 alloy and the bottom bar is SAE-AISI 4140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 190 |
| Elongation at Break, % | 5.0 to 32 | |
| 11 to 26 |
| Poisson's Ratio | 0.34 | |
| 0.29 |
| Shear Modulus, GPa | 54 | |
| 73 |
| Shear Strength, MPa | 330 to 410 | |
| 410 to 660 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 710 | |
| 690 to 1080 |
| Tensile Strength: Yield (Proof), MPa | 270 to 650 | |
| 590 to 990 |
Thermal Properties
| Melting Onset (Solidus), °C | 1440 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 43 |
| Thermal Expansion, µm/m-K | 5.0 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.7 | |
| 7.3 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.0 | |
| 8.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.2 | |
| 7.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 35 to 130 | |
| 74 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 to 1460 | |
| 920 to 2590 |
| Stiffness to Weight: Axial, points | 9.8 | |
| 13 |
| Stiffness to Weight: Bending, points | 21 | |
| 24 |
| Strength to Weight: Axial, points | 17 to 24 | |
| 25 to 38 |
| Strength to Weight: Bending, points | 17 to 22 | |
| 22 to 30 |
| Thermal Diffusivity, mm2/s | 3.7 | |
| 12 |
| Thermal Shock Resistance, points | 49 to 70 | |
| 20 to 32 |