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SAE-AISI M3 Class 2 Steel vs. ASTM F15 Fe-Ni-Co

Both SAE-AISI M3 class 2 steel and ASTM F15 Fe-Ni-Co are iron alloys. They have 54% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (4, 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 ASTM F15 Fe-Ni-Co.

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
73
Tensile Strength: Ultimate (UTS), MPa 770 to 2210
520 to 880

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1620
1410
Melting Onset (Solidus), °C 1570
1450
Specific Heat Capacity, J/kg-K 440
460
Thermal Conductivity, W/m-K 26
17
Thermal Expansion, µm/m-K 12
6.0

Otherwise Unclassified Properties

Base Metal Price, % relative 25
49
Density, g/cm3 8.3
8.3
Embodied Carbon, kg CO2/kg material 12
5.2
Embodied Energy, MJ/kg 180
71
Embodied Water, L/kg 110
190

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 26 to 74
17 to 29
Strength to Weight: Bending, points 22 to 45
17 to 24
Thermal Diffusivity, mm2/s 7.2
4.5
Thermal Shock Resistance, points 24 to 69
32 to 55

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 1.2 to 1.3
0 to 0.040
Chromium (Cr), % 3.8 to 4.5
0 to 0.2
Cobalt (Co), % 0
16 to 18
Copper (Cu), % 0 to 0.25
0 to 0.2
Iron (Fe), % 75.8 to 82.3
50.3 to 56
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0.15 to 0.4
0 to 0.5
Molybdenum (Mo), % 4.8 to 6.5
0 to 0.2
Nickel (Ni), % 0 to 0.3
28 to 30
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.45
0 to 0.2
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.1
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.8 to 3.8
0
Zirconium (Zr), % 0
0 to 0.1

Comparable Variants