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SAE-AISI M3 Class 2 Steel vs. AWS ERTi-12

SAE-AISI M3 class 2 steel belongs to the iron alloys classification, while AWS ERTi-12 belongs to the titanium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, 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 AWS ERTi-12.

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
41
Tensile Strength: Ultimate (UTS), MPa 770 to 2210
480

Thermal Properties

Latent Heat of Fusion, J/g 260
420
Melting Completion (Liquidus), °C 1620
1670
Melting Onset (Solidus), °C 1570
1620
Specific Heat Capacity, J/kg-K 440
540
Thermal Conductivity, W/m-K 26
21
Thermal Expansion, µm/m-K 12
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 25
37
Density, g/cm3 8.3
4.5
Embodied Carbon, kg CO2/kg material 12
31
Embodied Energy, MJ/kg 180
510
Embodied Water, L/kg 110
110

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 26 to 74
30
Strength to Weight: Bending, points 22 to 45
30
Thermal Diffusivity, mm2/s 7.2
8.7
Thermal Shock Resistance, points 24 to 69
37

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.0080
Iron (Fe), % 75.8 to 82.3
0 to 0.15
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.8 to 6.5
0.2 to 0.4
Nickel (Ni), % 0 to 0.3
0.060 to 0.090
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
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
99.147 to 99.66
Tungsten (W), % 5.0 to 6.8
0
Vanadium (V), % 2.8 to 3.8
0