ASTM A372 Grade H Steel vs. SAE-AISI 1552 Steel
Both ASTM A372 grade H steel and SAE-AISI 1552 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 ASTM A372 grade H steel and the bottom bar is SAE-AISI 1552 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 to 280 | |
| 220 to 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 to 22 | |
| 11 to 14 |
| Fatigue Strength, MPa | 310 to 380 | |
| 290 to 400 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 410 to 570 | |
| 460 to 510 |
| Tensile Strength: Ultimate (UTS), MPa | 650 to 910 | |
| 760 to 840 |
| Tensile Strength: Yield (Proof), MPa | 430 to 550 | |
| 460 to 650 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 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 | 45 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 11 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 1.4 |
| Embodied Energy, MJ/kg | 20 | |
| 19 |
| Embodied Water, L/kg | 49 | |
| 47 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 to 160 | |
| 81 to 98 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 500 to 810 | |
| 560 to 1130 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 23 to 32 | |
| 27 to 30 |
| Strength to Weight: Bending, points | 21 to 27 | |
| 24 to 25 |
| Thermal Diffusivity, mm2/s | 12 | |
| 14 |
| Thermal Shock Resistance, points | 19 to 27 | |
| 26 to 29 |
Alloy Composition
| Carbon (C), % | 0.3 to 0.4 | |
| 0.47 to 0.55 |
| Chromium (Cr), % | 0.4 to 0.65 | |
| 0 |
| Iron (Fe), % | 97.3 to 98.3 | |
| 97.9 to 98.3 |
| Manganese (Mn), % | 0.75 to 1.1 | |
| 1.2 to 1.5 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.050 |