SAE-AISI 1548 Steel vs. ASTM A372 Grade H Steel
Both SAE-AISI 1548 steel and ASTM A372 grade H steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1548 steel and the bottom bar is ASTM A372 grade H steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 220 to 250 | |
| 200 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 16 | |
| 20 to 22 |
| Fatigue Strength, MPa | 270 to 430 | |
| 310 to 380 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 73 |
| Shear Strength, MPa | 440 to 500 | |
| 410 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 730 to 830 | |
| 650 to 910 |
| Tensile Strength: Yield (Proof), MPa | 420 to 690 | |
| 430 to 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 410 |
| 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 | |
| 45 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 2.3 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 1.5 |
| Embodied Energy, MJ/kg | 19 | |
| 20 |
| Embodied Water, L/kg | 47 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 79 to 99 | |
| 130 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 470 to 1280 | |
| 500 to 810 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 26 to 30 | |
| 23 to 32 |
| Strength to Weight: Bending, points | 23 to 25 | |
| 21 to 27 |
| Thermal Diffusivity, mm2/s | 14 | |
| 12 |
| Thermal Shock Resistance, points | 23 to 27 | |
| 19 to 27 |
Alloy Composition
| Carbon (C), % | 0.44 to 0.52 | |
| 0.3 to 0.4 |
| Chromium (Cr), % | 0 | |
| 0.4 to 0.65 |
| Iron (Fe), % | 98 to 98.5 | |
| 97.3 to 98.3 |
| Manganese (Mn), % | 1.1 to 1.4 | |
| 0.75 to 1.1 |
| Molybdenum (Mo), % | 0 | |
| 0.15 to 0.25 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.010 |