K94200 Alloy vs. ASTM A231 Spring Steel
Both K94200 alloy and ASTM A231 spring steel 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 K94200 alloy and the bottom bar is ASTM A231 spring steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 190 |
| Elongation at Break, % | 5.0 to 32 | |
| 14 |
| Poisson's Ratio | 0.34 | |
| 0.29 |
| Shear Modulus, GPa | 54 | |
| 73 |
| Shear Strength, MPa | 330 to 410 | |
| 1080 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 710 | |
| 1790 |
| Tensile Strength: Yield (Proof), MPa | 270 to 650 | |
| 1570 |
Thermal Properties
| Melting Onset (Solidus), °C | 1440 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 52 |
| 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 | |
| 230 |
| Stiffness to Weight: Axial, points | 9.8 | |
| 13 |
| Stiffness to Weight: Bending, points | 21 | |
| 24 |
| Strength to Weight: Axial, points | 17 to 24 | |
| 64 |
| Strength to Weight: Bending, points | 17 to 22 | |
| 42 |
| Thermal Diffusivity, mm2/s | 3.7 | |
| 14 |
| Thermal Shock Resistance, points | 49 to 70 | |
| 53 |