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SAE-AISI M2 Steel vs. AWS ERTi-7

SAE-AISI M2 steel belongs to the iron alloys classification, while AWS ERTi-7 belongs to the titanium alloys. There are 20 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 M2 steel and the bottom bar is AWS ERTi-7.

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 760 to 2150
340

Thermal Properties

Latent Heat of Fusion, J/g 260
420
Melting Completion (Liquidus), °C 1610
1670
Melting Onset (Solidus), °C 1570
1620
Specific Heat Capacity, J/kg-K 440
540
Thermal Conductivity, W/m-K 22
21
Thermal Expansion, µm/m-K 10
8.7

Otherwise Unclassified Properties

Density, g/cm3 8.4
4.5
Embodied Carbon, kg CO2/kg material 8.8
47
Embodied Energy, MJ/kg 130
800
Embodied Water, L/kg 98
470

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 25 to 71
21
Strength to Weight: Bending, points 22 to 44
24
Thermal Diffusivity, mm2/s 5.9
8.8
Thermal Shock Resistance, points 27 to 76
26

Alloy Composition

Carbon (C), % 0.78 to 1.1
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), % 78.5 to 83.4
0 to 0.12
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.015
Oxygen (O), % 0
0.080 to 0.16
Palladium (Pd), % 0
0.12 to 0.25
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
99.417 to 99.8
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0