SAE-AISI 1046 Steel vs. ASTM A372 Grade G Steel
Both SAE-AISI 1046 steel and ASTM A372 grade G 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 1046 steel and the bottom bar is ASTM A372 grade G steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 to 210 | |
| 200 to 280 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 14 to 17 | |
| 20 to 22 |
| Fatigue Strength, MPa | 240 to 390 | |
| 310 to 380 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 72 | |
| 73 |
| Shear Strength, MPa | 410 to 450 | |
| 410 to 570 |
| Tensile Strength: Ultimate (UTS), MPa | 660 to 740 | |
| 650 to 910 |
| Tensile Strength: Yield (Proof), MPa | 370 to 610 | |
| 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 | |
| 46 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 11 | |
| 7.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 12 | |
| 8.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 2.2 |
| 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 | 91 to 95 | |
| 130 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 to 990 | |
| 500 to 810 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 23 to 26 | |
| 23 to 32 |
| Strength to Weight: Bending, points | 22 to 23 | |
| 21 to 27 |
| Thermal Diffusivity, mm2/s | 14 | |
| 13 |
| Thermal Shock Resistance, points | 23 to 25 | |
| 19 to 27 |
Alloy Composition
| Carbon (C), % | 0.43 to 0.5 | |
| 0.25 to 0.35 |
| Chromium (Cr), % | 0 | |
| 0.4 to 0.65 |
| Iron (Fe), % | 98.4 to 98.9 | |
| 97.4 to 98.4 |
| Manganese (Mn), % | 0.7 to 1.0 | |
| 0.7 to 1.0 |
| 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 |