SAE-AISI M3 Class 2 Steel vs. SAE-AISI M6 Steel
Both SAE-AISI M3 class 2 steel and SAE-AISI M6 steel are iron alloys. They have 88% of their average alloy composition in common.
For each property being compared, the top bar is SAE-AISI M3 class 2 steel and the bottom bar is SAE-AISI M6 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
200 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 77 | |
77 |
Tensile Strength: Ultimate (UTS), MPa | 770 to 2210 | |
840 to 2210 |
Thermal Properties
Latent Heat of Fusion, J/g | 260 | |
260 |
Melting Completion (Liquidus), °C | 1620 | |
1560 |
Melting Onset (Solidus), °C | 1570 | |
1510 |
Specific Heat Capacity, J/kg-K | 440 | |
440 |
Thermal Conductivity, W/m-K | 26 | |
17 |
Thermal Expansion, µm/m-K | 12 | |
12 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 25 | |
39 |
Density, g/cm3 | 8.3 | |
8.4 |
Embodied Carbon, kg CO2/kg material | 12 | |
8.0 |
Embodied Energy, MJ/kg | 180 | |
120 |
Embodied Water, L/kg | 110 | |
160 |
Common Calculations
PREN (Pitting Resistance) | 33 | |
28 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 23 | |
23 |
Strength to Weight: Axial, points | 26 to 74 | |
28 to 73 |
Strength to Weight: Bending, points | 22 to 45 | |
24 to 45 |
Thermal Diffusivity, mm2/s | 7.2 | |
4.7 |
Thermal Shock Resistance, points | 24 to 69 | |
26 to 68 |
Alloy Composition
Carbon (C), % | 1.2 to 1.3 | |
0.75 to 0.85 |
Chromium (Cr), % | 3.8 to 4.5 | |
3.8 to 4.5 |
Cobalt (Co), % | 0 | |
11 to 13 |
Copper (Cu), % | 0 to 0.25 | |
0 |
Iron (Fe), % | 75.8 to 82.3 | |
68.8 to 74.6 |
Manganese (Mn), % | 0.15 to 0.4 | |
0.15 to 0.4 |
Molybdenum (Mo), % | 4.8 to 6.5 | |
4.5 to 5.5 |
Nickel (Ni), % | 0 to 0.3 | |
0 |
Phosphorus (P), % | 0 to 0.030 | |
0 to 0.030 |
Silicon (Si), % | 0.2 to 0.45 | |
0.2 to 0.45 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.030 |
Tungsten (W), % | 5.0 to 6.8 | |
3.8 to 4.8 |
Vanadium (V), % | 2.8 to 3.8 | |
1.3 to 1.7 |