SAE-AISI 1045 Steel vs. ASTM A356 Grade 8
Both SAE-AISI 1045 steel and ASTM A356 grade 8 are iron alloys. They have a very high 97% 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 SAE-AISI 1045 steel and the bottom bar is ASTM A356 grade 8.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 180 to 190 | |
190 |
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Elongation at Break, % | 13 to 18 | |
21 |
Fatigue Strength, MPa | 220 to 370 | |
270 |
Poisson's Ratio | 0.29 | |
0.29 |
Reduction in Area, % | 40 to 51 | |
50 |
Shear Modulus, GPa | 72 | |
73 |
Tensile Strength: Ultimate (UTS), MPa | 620 to 680 | |
630 |
Tensile Strength: Yield (Proof), MPa | 330 to 580 | |
390 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
260 |
Maximum Temperature: Mechanical, °C | 400 | |
440 |
Melting Completion (Liquidus), °C | 1460 | |
1470 |
Melting Onset (Solidus), °C | 1420 | |
1430 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 51 | |
38 |
Thermal Expansion, µm/m-K | 12 | |
13 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
7.5 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
8.6 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 1.8 | |
3.5 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
2.0 |
Embodied Energy, MJ/kg | 18 | |
26 |
Embodied Water, L/kg | 46 | |
55 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 84 to 93 | |
110 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 300 to 900 | |
390 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 22 to 24 | |
22 |
Strength to Weight: Bending, points | 21 to 22 | |
21 |
Thermal Diffusivity, mm2/s | 14 | |
10 |
Thermal Shock Resistance, points | 20 to 22 | |
18 |
Alloy Composition
Carbon (C), % | 0.43 to 0.5 | |
0 to 0.2 |
Chromium (Cr), % | 0 | |
1.0 to 1.5 |
Iron (Fe), % | 98.5 to 99 | |
95.4 to 97.4 |
Manganese (Mn), % | 0.6 to 0.9 | |
0.5 to 0.9 |
Molybdenum (Mo), % | 0 | |
0.9 to 1.2 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.035 |
Silicon (Si), % | 0 | |
0.2 to 0.6 |
Sulfur (S), % | 0 to 0.050 | |
0 to 0.030 |
Vanadium (V), % | 0 | |
0.050 to 0.15 |