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AWS ERTi-7 vs. SAE-AISI M2 Steel

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 340
760 to 2150

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Carbon (C), % 0 to 0.030
0.78 to 1.1
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.0080
0
Iron (Fe), % 0 to 0.12
78.5 to 83.4
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
4.5 to 5.5
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0 to 0.015
0
Oxygen (O), % 0.080 to 0.16
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99.417 to 99.8
0
Tungsten (W), % 0
5.5 to 6.8
Vanadium (V), % 0
1.8 to 2.2