SAE-AISI M4 Steel vs. ASTM A514 Steel
Both SAE-AISI M4 steel and ASTM A514 steel are iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI M4 steel and the bottom bar is ASTM A514 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 770 to 2150 | |
| 790 to 830 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 250 to 260 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1460 |
| Melting Onset (Solidus), °C | 1560 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 440 | |
| 470 |
| Thermal Conductivity, W/m-K | 25 | |
| 37 to 51 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 25 | |
| 2.3 to 3.8 |
| Density, g/cm3 | 8.3 | |
| 7.8 to 7.9 |
| Embodied Carbon, kg CO2/kg material | 14 | |
| 1.6 to 1.8 |
| Embodied Energy, MJ/kg | 210 | |
| 21 to 25 |
| Embodied Water, L/kg | 110 | |
| 48 to 57 |
Common Calculations
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 26 to 72 | |
| 28 to 29 |
| Strength to Weight: Bending, points | 23 to 45 | |
| 24 to 25 |
| Thermal Diffusivity, mm2/s | 6.9 | |
| 10 to 14 |
| Thermal Shock Resistance, points | 24 to 68 | |
| 23 to 24 |