ASTM A227 Spring Steel vs. ASTM A148 Cast Steel
Both ASTM A227 spring steel and ASTM A148 cast steel are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is ASTM A227 spring steel and the bottom bar is ASTM A148 cast steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 500 to 640 | |
| 190 to 390 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 | |
| 5.7 to 25 |
| Fatigue Strength, MPa | 900 to 1160 | |
| 280 to 670 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 1720 to 2220 | |
| 630 to 1300 |
| Tensile Strength: Yield (Proof), MPa | 1430 to 1850 | |
| 390 to 1160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 to 430 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1460 |
| Melting Onset (Solidus), °C | 1410 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 52 | |
| 37 to 47 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 7.3 to 7.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 8.3 to 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 2.3 to 3.3 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.5 to 1.7 |
| Embodied Energy, MJ/kg | 19 | |
| 20 to 22 |
| Embodied Water, L/kg | 46 | |
| 48 to 53 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 to 260 | |
| 71 to 150 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 61 to 79 | |
| 22 to 46 |
| Strength to Weight: Bending, points | 41 to 48 | |
| 21 to 34 |
| Thermal Diffusivity, mm2/s | 14 | |
| 9.9 to 13 |
| Thermal Shock Resistance, points | 55 to 71 | |
| 18 to 38 |