ASTM A227 Spring Steel vs. EN 1.4612 Stainless Steel
Both ASTM A227 spring steel and EN 1.4612 stainless steel are iron alloys. They have 74% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is ASTM A227 spring steel and the bottom bar is EN 1.4612 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 12 | |
| 11 |
| Fatigue Strength, MPa | 900 to 1160 | |
| 860 to 950 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 72 | |
| 76 |
| Shear Strength, MPa | 1030 to 1330 | |
| 1010 to 1110 |
| Tensile Strength: Ultimate (UTS), MPa | 1720 to 2220 | |
| 1690 to 1850 |
| Tensile Strength: Yield (Proof), MPa | 1430 to 1850 | |
| 1570 to 1730 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 790 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1450 |
| Melting Onset (Solidus), °C | 1410 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 16 |
| Density, g/cm3 | 7.8 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 3.6 |
| Embodied Energy, MJ/kg | 19 | |
| 50 |
| Embodied Water, L/kg | 46 | |
| 140 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 200 to 260 | |
| 190 to 210 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 61 to 79 | |
| 60 to 65 |
| Strength to Weight: Bending, points | 41 to 48 | |
| 40 to 43 |
| Thermal Shock Resistance, points | 55 to 71 | |
| 58 to 63 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 1.4 to 1.8 |
| Carbon (C), % | 0.45 to 0.85 | |
| 0 to 0.015 |
| Chromium (Cr), % | 0 | |
| 11 to 12.5 |
| Iron (Fe), % | 97.4 to 99.1 | |
| 71.5 to 75.5 |
| Manganese (Mn), % | 0.3 to 1.3 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 0 | |
| 1.8 to 2.3 |
| Nickel (Ni), % | 0 | |
| 10.2 to 11.3 |
| Nitrogen (N), % | 0 | |
| 0 to 0.010 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.010 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.0050 |
| Titanium (Ti), % | 0 | |
| 0.2 to 0.5 |