SAE-AISI M3 Class 2 Steel vs. Grade 300 Maraging Steel
Both SAE-AISI M3 class 2 steel and grade 300 maraging steel are iron alloys. They have 72% of their average alloy composition in common. There are 20 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 M3 class 2 steel and the bottom bar is grade 300 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
190 |
Poisson's Ratio | 0.29 | |
0.3 |
Shear Modulus, GPa | 77 | |
75 |
Tensile Strength: Ultimate (UTS), MPa | 770 to 2210 | |
1030 to 2030 |
Thermal Properties
Latent Heat of Fusion, J/g | 260 | |
270 |
Melting Completion (Liquidus), °C | 1620 | |
1480 |
Melting Onset (Solidus), °C | 1570 | |
1430 |
Specific Heat Capacity, J/kg-K | 440 | |
450 |
Thermal Expansion, µm/m-K | 12 | |
12 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 25 | |
34 |
Density, g/cm3 | 8.3 | |
8.2 |
Embodied Carbon, kg CO2/kg material | 12 | |
5.1 |
Embodied Energy, MJ/kg | 180 | |
68 |
Embodied Water, L/kg | 110 | |
150 |
Common Calculations
PREN (Pitting Resistance) | 33 | |
16 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 23 | |
23 |
Strength to Weight: Axial, points | 26 to 74 | |
35 to 68 |
Strength to Weight: Bending, points | 22 to 45 | |
28 to 43 |
Thermal Shock Resistance, points | 24 to 69 | |
31 to 62 |
Alloy Composition
Aluminum (Al), % | 0 | |
0.050 to 0.15 |
Boron (B), % | 0 | |
0 to 0.0030 |
Calcium (Ca), % | 0 | |
0 to 0.050 |
Carbon (C), % | 1.2 to 1.3 | |
0 to 0.030 |
Chromium (Cr), % | 3.8 to 4.5 | |
0 |
Cobalt (Co), % | 0 | |
8.5 to 9.5 |
Copper (Cu), % | 0 to 0.25 | |
0 |
Iron (Fe), % | 75.8 to 82.3 | |
65 to 68.4 |
Manganese (Mn), % | 0.15 to 0.4 | |
0 to 0.1 |
Molybdenum (Mo), % | 4.8 to 6.5 | |
4.6 to 5.2 |
Nickel (Ni), % | 0 to 0.3 | |
18 to 19 |
Phosphorus (P), % | 0 to 0.030 | |
0 to 0.010 |
Silicon (Si), % | 0.2 to 0.45 | |
0 to 0.1 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.010 |
Titanium (Ti), % | 0 | |
0.5 to 0.8 |
Tungsten (W), % | 5.0 to 6.8 | |
0 |
Vanadium (V), % | 2.8 to 3.8 | |
0 |
Zirconium (Zr), % | 0 | |
0 to 0.020 |