K94200 Alloy vs. ASTM A227 Spring Steel
Both K94200 alloy and ASTM A227 spring steel are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is K94200 alloy and the bottom bar is ASTM A227 spring steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 190 |
| Elongation at Break, % | 5.0 to 32 | |
| 12 |
| Poisson's Ratio | 0.34 | |
| 0.29 |
| Shear Modulus, GPa | 54 | |
| 72 |
| Shear Strength, MPa | 330 to 410 | |
| 1030 to 1330 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 710 | |
| 1720 to 2220 |
| Tensile Strength: Yield (Proof), MPa | 270 to 650 | |
| 1430 to 1850 |
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 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.7 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.0 | |
| 8.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.2 | |
| 7.8 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 35 to 130 | |
| 200 to 260 |
| Stiffness to Weight: Axial, points | 9.8 | |
| 13 |
| Stiffness to Weight: Bending, points | 21 | |
| 24 |
| Strength to Weight: Axial, points | 17 to 24 | |
| 61 to 79 |
| Strength to Weight: Bending, points | 17 to 22 | |
| 41 to 48 |
| Thermal Diffusivity, mm2/s | 3.7 | |
| 14 |
| Thermal Shock Resistance, points | 49 to 70 | |
| 55 to 71 |