Aged 300 Maraging Steel vs. SAE-AISI 4340M Steel
Both aged 300 maraging steel and SAE-AISI 4340M steel are iron alloys. They have 69% of their average alloy composition in common. There are 28 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 aged 300 maraging steel and the bottom bar is SAE-AISI 4340M steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 6.5 | |
| 6.0 |
| Fatigue Strength, MPa | 860 | |
| 690 |
| Fracture Toughness, MPa-m1/2 | 77 | |
| 60 |
| Impact Strength: V-Notched Charpy, J | 18 | |
| 18 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Rockwell C Hardness | 56 | |
| 55 |
| Shear Modulus, GPa | 75 | |
| 72 |
| Shear Strength, MPa | 1190 | |
| 1360 |
| Tensile Strength: Ultimate (UTS), MPa | 2030 | |
| 2340 |
| Tensile Strength: Yield (Proof), MPa | 1990 | |
| 1240 |
Thermal Properties
| Latent Heat of Fusion, J/g | 270 | |
| 280 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1440 |
| Melting Onset (Solidus), °C | 1430 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 480 |
| Thermal Expansion, µm/m-K | 12 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 34 | |
| 3.9 |
| Density, g/cm3 | 8.2 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 5.1 | |
| 1.9 |
| Embodied Energy, MJ/kg | 68 | |
| 26 |
| Embodied Water, L/kg | 150 | |
| 55 |
Common Calculations
| PREN (Pitting Resistance) | 16 | |
| 2.2 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 130 | |
| 120 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 68 | |
| 84 |
| Strength to Weight: Bending, points | 43 | |
| 51 |
| Thermal Shock Resistance, points | 62 | |
| 70 |
Alloy Composition
| Aluminum (Al), % | 0.050 to 0.15 | |
| 0 |
| Boron (B), % | 0 to 0.0030 | |
| 0 |
| Calcium (Ca), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 to 0.030 | |
| 0.38 to 0.43 |
| Chromium (Cr), % | 0 | |
| 0.7 to 1.0 |
| Cobalt (Co), % | 8.5 to 9.5 | |
| 0 |
| Iron (Fe), % | 65 to 68.4 | |
| 93.3 to 94.8 |
| Manganese (Mn), % | 0 to 0.1 | |
| 0.65 to 0.9 |
| Molybdenum (Mo), % | 4.6 to 5.2 | |
| 0.35 to 0.45 |
| Nickel (Ni), % | 18 to 19 | |
| 1.7 to 2.0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.012 |
| Silicon (Si), % | 0 to 0.1 | |
| 1.5 to 1.8 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 to 0.012 |
| Titanium (Ti), % | 0.5 to 0.8 | |
| 0 |
| Vanadium (V), % | 0 | |
| 0.050 to 0.1 |
| Zirconium (Zr), % | 0 to 0.020 | |
| 0 |