SAE-AISI 1151 Steel vs. ASTM A372 Grade H Steel
Both SAE-AISI 1151 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 1151 steel and the bottom bar is ASTM A372 grade H steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 210 to 220 | |
| 200 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 11 to 17 | |
| 20 to 22 |
| Fatigue Strength, MPa | 260 to 410 | |
| 310 to 380 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 73 |
| Shear Strength, MPa | 430 to 480 | |
| 410 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 710 to 800 | |
| 650 to 910 |
| Tensile Strength: Yield (Proof), MPa | 390 to 660 | |
| 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 | 10 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 12 | |
| 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 | 18 | |
| 20 |
| Embodied Water, L/kg | 46 | |
| 49 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 86 to 100 | |
| 130 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 400 to 1170 | |
| 500 to 810 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 25 to 28 | |
| 23 to 32 |
| Strength to Weight: Bending, points | 22 to 24 | |
| 21 to 27 |
| Thermal Diffusivity, mm2/s | 14 | |
| 12 |
| Thermal Shock Resistance, points | 22 to 25 | |
| 19 to 27 |
Alloy Composition
| Carbon (C), % | 0.48 to 0.55 | |
| 0.3 to 0.4 |
| Chromium (Cr), % | 0 | |
| 0.4 to 0.65 |
| Iron (Fe), % | 98.3 to 98.7 | |
| 97.3 to 98.3 |
| Manganese (Mn), % | 0.7 to 1.0 | |
| 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), % | 0.080 to 0.13 | |
| 0 to 0.010 |