SAE-AISI 5145 Steel vs. SAE-AISI A2 Steel
Both SAE-AISI 5145 steel and SAE-AISI A2 steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 5145 steel and the bottom bar is SAE-AISI A2 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
190 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
74 |
Tensile Strength: Ultimate (UTS), MPa | 560 | |
710 to 2040 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
260 |
Melting Completion (Liquidus), °C | 1460 | |
1450 |
Melting Onset (Solidus), °C | 1410 | |
1410 |
Specific Heat Capacity, J/kg-K | 470 | |
470 |
Thermal Conductivity, W/m-K | 47 | |
38 |
Thermal Expansion, µm/m-K | 12 | |
11 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
8.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
9.5 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 2.1 | |
5.5 |
Density, g/cm3 | 7.8 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
2.7 |
Embodied Energy, MJ/kg | 19 | |
38 |
Embodied Water, L/kg | 49 | |
73 |
Common Calculations
Stiffness to Weight: Axial, points | 13 | |
14 |
Stiffness to Weight: Bending, points | 24 | |
25 |
Strength to Weight: Axial, points | 20 | |
25 to 73 |
Strength to Weight: Bending, points | 19 | |
23 to 46 |
Thermal Diffusivity, mm2/s | 13 | |
10 |
Thermal Shock Resistance, points | 17 | |
25 to 71 |
Alloy Composition
Carbon (C), % | 0.43 to 0.48 | |
1.0 to 1.1 |
Chromium (Cr), % | 0.7 to 0.9 | |
4.8 to 5.5 |
Copper (Cu), % | 0 | |
0 to 0.25 |
Iron (Fe), % | 97.3 to 98 | |
89.4 to 93.3 |
Manganese (Mn), % | 0.7 to 0.9 | |
0 to 1.0 |
Molybdenum (Mo), % | 0 | |
0.9 to 1.4 |
Nickel (Ni), % | 0 | |
0 to 0.3 |
Phosphorus (P), % | 0 to 0.035 | |
0 to 0.030 |
Silicon (Si), % | 0.15 to 0.35 | |
0 to 0.5 |
Sulfur (S), % | 0 to 0.040 | |
0 to 0.030 |
Vanadium (V), % | 0 | |
0.15 to 0.5 |