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SAE-AISI M3 Class 2 Steel vs. R56406 Titanium

SAE-AISI M3 class 2 steel belongs to the iron alloys classification, while R56406 titanium belongs to the titanium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, 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 R56406 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 77
40
Tensile Strength: Ultimate (UTS), MPa 770 to 2210
980

Thermal Properties

Latent Heat of Fusion, J/g 260
410
Melting Completion (Liquidus), °C 1620
1610
Melting Onset (Solidus), °C 1570
1560
Specific Heat Capacity, J/kg-K 440
560
Thermal Conductivity, W/m-K 26
7.1
Thermal Expansion, µm/m-K 12
9.6

Otherwise Unclassified Properties

Base Metal Price, % relative 25
36
Density, g/cm3 8.3
4.5
Embodied Carbon, kg CO2/kg material 12
38
Embodied Energy, MJ/kg 180
610
Embodied Water, L/kg 110
200

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 26 to 74
61
Strength to Weight: Bending, points 22 to 45
49
Thermal Diffusivity, mm2/s 7.2
2.8
Thermal Shock Resistance, points 24 to 69
69

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 1.2 to 1.3
0 to 0.1
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 75.8 to 82.3
0 to 0.3
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.8 to 6.5
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.45
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
88.1 to 91
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.8 to 3.8
3.5 to 4.5