SAE-AISI 1552 Steel vs. SAE-AISI 1049 Steel
Both SAE-AISI 1552 steel and SAE-AISI 1049 steel are iron alloys. Their average alloy composition is basically identical.
For each property being compared, the top bar is SAE-AISI 1552 steel and the bottom bar is SAE-AISI 1049 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 250 | |
| 200 to 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 14 | |
| 11 to 17 |
| Fatigue Strength, MPa | 290 to 400 | |
| 250 to 400 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Reduction in Area, % | 34 to 46 | |
| 34 to 46 |
| Shear Modulus, GPa | 72 | |
| 72 |
| Shear Strength, MPa | 460 to 510 | |
| 420 to 450 |
| Tensile Strength: Ultimate (UTS), MPa | 760 to 840 | |
| 680 to 750 |
| Tensile Strength: Yield (Proof), MPa | 460 to 650 | |
| 370 to 640 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 400 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 51 | |
| 51 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 12 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.4 |
| Embodied Energy, MJ/kg | 19 | |
| 18 |
| Embodied Water, L/kg | 47 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 81 to 98 | |
| 75 to 99 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 560 to 1130 | |
| 370 to 1090 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 27 to 30 | |
| 24 to 27 |
| Strength to Weight: Bending, points | 24 to 25 | |
| 22 to 23 |
| Thermal Diffusivity, mm2/s | 14 | |
| 14 |
| Thermal Shock Resistance, points | 26 to 29 | |
| 22 to 24 |
Alloy Composition
| Carbon (C), % | 0.47 to 0.55 | |
| 0.46 to 0.53 |
| Iron (Fe), % | 97.9 to 98.3 | |
| 98.5 to 98.9 |
| Manganese (Mn), % | 1.2 to 1.5 | |
| 0.6 to 0.9 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.050 |