Annealed SAE-AISI M3 Class 1 vs. Annealed SAE-AISI M3 Class 2
Both annealed SAE-AISI M3 class 1 and annealed SAE-AISI M3 class 2 are iron alloys. Both are furnished in the annealed condition. Their average alloy composition is basically identical. There are 23 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.
For each property being compared, the top bar is annealed SAE-AISI M3 class 1 and the bottom bar is annealed SAE-AISI M3 class 2.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 230 | |
230 |
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 | |
770 |
Thermal Properties
Latent Heat of Fusion, J/g | 260 | |
260 |
Melting Completion (Liquidus), °C | 1610 | |
1620 |
Melting Onset (Solidus), °C | 1570 | |
1570 |
Specific Heat Capacity, J/kg-K | 440 | |
440 |
Thermal Conductivity, W/m-K | 26 | |
26 |
Thermal Expansion, µm/m-K | 12 | |
12 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 25 | |
25 |
Density, g/cm3 | 8.3 | |
8.3 |
Embodied Carbon, kg CO2/kg material | 10 | |
12 |
Embodied Energy, MJ/kg | 150 | |
180 |
Embodied Water, L/kg | 100 | |
110 |
Common Calculations
PREN (Pitting Resistance) | 33 | |
33 |
Stiffness to Weight: Axial, points | 13 | |
13 |
Stiffness to Weight: Bending, points | 23 | |
23 |
Strength to Weight: Axial, points | 26 | |
26 |
Strength to Weight: Bending, points | 22 | |
22 |
Thermal Diffusivity, mm2/s | 7.2 | |
7.2 |
Thermal Shock Resistance, points | 24 | |
24 |
Alloy Composition
Carbon (C), % | 1.0 to 1.1 | |
1.2 to 1.3 |
Chromium (Cr), % | 3.8 to 4.5 | |
3.8 to 4.5 |
Copper (Cu), % | 0 to 0.25 | |
0 to 0.25 |
Iron (Fe), % | 76.9 to 82.9 | |
75.8 to 82.3 |
Manganese (Mn), % | 0.15 to 0.4 | |
0.15 to 0.4 |
Molybdenum (Mo), % | 4.8 to 6.5 | |
4.8 to 6.5 |
Nickel (Ni), % | 0 to 0.3 | |
0 to 0.3 |
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 | |
5.0 to 6.8 |
Vanadium (V), % | 2.3 to 2.8 | |
2.8 to 3.8 |