SAE-AISI 4340M Steel vs. C34200 Brass
SAE-AISI 4340M steel belongs to the iron alloys classification, while C34200 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 4340M steel and the bottom bar is C34200 brass.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 100 |
| Elongation at Break, % | 6.0 | |
| 3.0 to 17 |
| Poisson's Ratio | 0.29 | |
| 0.31 |
| Shear Modulus, GPa | 72 | |
| 40 |
| Shear Strength, MPa | 1360 | |
| 230 to 360 |
| Tensile Strength: Ultimate (UTS), MPa | 2340 | |
| 370 to 650 |
| Tensile Strength: Yield (Proof), MPa | 1240 | |
| 150 to 420 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 170 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 120 |
| Melting Completion (Liquidus), °C | 1440 | |
| 910 |
| Melting Onset (Solidus), °C | 1400 | |
| 890 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 380 |
| Thermal Conductivity, W/m-K | 38 | |
| 120 |
| Thermal Expansion, µm/m-K | 13 | |
| 21 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.8 | |
| 26 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 9.1 | |
| 29 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 3.9 | |
| 24 |
| Density, g/cm3 | 7.8 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 1.9 | |
| 2.6 |
| Embodied Energy, MJ/kg | 26 | |
| 45 |
| Embodied Water, L/kg | 55 | |
| 320 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 9.0 to 98 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 4120 | |
| 110 to 870 |
| Stiffness to Weight: Axial, points | 13 | |
| 7.1 |
| Stiffness to Weight: Bending, points | 25 | |
| 19 |
| Strength to Weight: Axial, points | 84 | |
| 13 to 22 |
| Strength to Weight: Bending, points | 51 | |
| 14 to 20 |
| Thermal Diffusivity, mm2/s | 10 | |
| 37 |
| Thermal Shock Resistance, points | 70 | |
| 12 to 22 |
Alloy Composition
| Carbon (C), % | 0.38 to 0.43 | |
| 0 |
| Chromium (Cr), % | 0.7 to 1.0 | |
| 0 |
| Copper (Cu), % | 0 | |
| 62 to 65 |
| Iron (Fe), % | 93.3 to 94.8 | |
| 0 to 0.1 |
| Lead (Pb), % | 0 | |
| 1.5 to 2.5 |
| Manganese (Mn), % | 0.65 to 0.9 | |
| 0 |
| Molybdenum (Mo), % | 0.35 to 0.45 | |
| 0 |
| Nickel (Ni), % | 1.7 to 2.0 | |
| 0 |
| Phosphorus (P), % | 0 to 0.012 | |
| 0 |
| Silicon (Si), % | 1.5 to 1.8 | |
| 0 |
| Sulfur (S), % | 0 to 0.012 | |
| 0 |
| Vanadium (V), % | 0.050 to 0.1 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 32 to 36.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |