ASTM A229 Spring Steel vs. Type 1 Magnetic Alloy
Both ASTM A229 spring steel and Type 1 magnetic alloy are iron alloys. They have 54% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is ASTM A229 spring steel and the bottom bar is Type 1 magnetic alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 14 | |
| 4.0 to 38 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 72 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 1690 to 1890 | |
| 500 to 830 |
| Tensile Strength: Yield (Proof), MPa | 1100 to 1230 | |
| 220 to 790 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1420 |
| Melting Onset (Solidus), °C | 1410 | |
| 1370 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 460 |
| Thermal Expansion, µm/m-K | 12 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 3.1 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 3.4 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 31 |
| Density, g/cm3 | 7.8 | |
| 8.3 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 5.6 |
| Embodied Energy, MJ/kg | 19 | |
| 77 |
| Embodied Water, L/kg | 46 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 to 230 | |
| 33 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3260 to 4080 | |
| 130 to 1690 |
| Stiffness to Weight: Axial, points | 13 | |
| 12 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 60 to 67 | |
| 17 to 28 |
| Strength to Weight: Bending, points | 40 to 43 | |
| 17 to 24 |
| Thermal Shock Resistance, points | 54 to 60 | |
| 16 to 26 |
Alloy Composition
| Carbon (C), % | 0.55 to 0.85 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0 | |
| 0 to 0.3 |
| Cobalt (Co), % | 0 | |
| 0 to 0.5 |
| Copper (Cu), % | 0 | |
| 0 to 0.3 |
| Iron (Fe), % | 97.5 to 99 | |
| 50.7 to 56.5 |
| Manganese (Mn), % | 0.3 to 1.2 | |
| 0 to 0.8 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.3 |
| Nickel (Ni), % | 0 | |
| 43.5 to 46.5 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.010 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.5 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.030 |