K94200 Alloy vs. ASTM A229 Spring Steel
Both K94200 alloy and ASTM A229 spring 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 ASTM A229 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 | |
| 72 |
| Shear Strength, MPa | 330 to 410 | |
| 1020 to 1140 |
| Tensile Strength: Ultimate (UTS), MPa | 500 to 710 | |
| 1690 to 1890 |
| Tensile Strength: Yield (Proof), MPa | 270 to 650 | |
| 1100 to 1230 |
Thermal Properties
| Melting Onset (Solidus), °C | 1440 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 50 |
| 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 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 250 to 1460 | |
| 3260 to 4080 |
| Stiffness to Weight: Axial, points | 9.8 | |
| 13 |
| Stiffness to Weight: Bending, points | 21 | |
| 24 |
| Strength to Weight: Axial, points | 17 to 24 | |
| 60 to 67 |
| Strength to Weight: Bending, points | 17 to 22 | |
| 40 to 43 |
| Thermal Diffusivity, mm2/s | 3.7 | |
| 14 |
| Thermal Shock Resistance, points | 49 to 70 | |
| 54 to 60 |