ASTM A387 Grade 12 Steel vs. SAE-AISI 1151 Steel
Both ASTM A387 grade 12 steel and SAE-AISI 1151 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is ASTM A387 grade 12 steel and the bottom bar is SAE-AISI 1151 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 140 to 160 | |
| 210 to 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 25 | |
| 11 to 17 |
| Fatigue Strength, MPa | 190 to 230 | |
| 260 to 410 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 72 |
| Shear Strength, MPa | 300 to 330 | |
| 430 to 480 |
| Tensile Strength: Ultimate (UTS), MPa | 470 to 520 | |
| 710 to 800 |
| Tensile Strength: Yield (Proof), MPa | 260 to 310 | |
| 390 to 660 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 400 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1460 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 470 |
| Thermal Conductivity, W/m-K | 44 | |
| 51 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 10 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.8 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.6 | |
| 1.4 |
| Embodied Energy, MJ/kg | 21 | |
| 18 |
| Embodied Water, L/kg | 51 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 110 | |
| 86 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 180 to 250 | |
| 400 to 1170 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 16 to 18 | |
| 25 to 28 |
| Strength to Weight: Bending, points | 17 to 18 | |
| 22 to 24 |
| Thermal Diffusivity, mm2/s | 12 | |
| 14 |
| Thermal Shock Resistance, points | 14 to 15 | |
| 22 to 25 |
Alloy Composition
| Carbon (C), % | 0.050 to 0.17 | |
| 0.48 to 0.55 |
| Chromium (Cr), % | 0.8 to 1.2 | |
| 0 |
| Iron (Fe), % | 97 to 98.2 | |
| 98.3 to 98.7 |
| Manganese (Mn), % | 0.4 to 0.65 | |
| 0.7 to 1.0 |
| Molybdenum (Mo), % | 0.45 to 0.6 | |
| 0 |
| Phosphorus (P), % | 0 to 0.025 | |
| 0 to 0.040 |
| Silicon (Si), % | 0.15 to 0.4 | |
| 0 |
| Sulfur (S), % | 0 to 0.025 | |
| 0.080 to 0.13 |