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SAE-AISI T6 Steel vs. ASTM B817 Type I

SAE-AISI T6 steel belongs to the iron alloys classification, while ASTM B817 type I 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. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is SAE-AISI T6 steel and the bottom bar is ASTM B817 type I.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
100
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 81
40
Tensile Strength: Ultimate (UTS), MPa 880 to 2150
770 to 960

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Melting Completion (Liquidus), °C 1830
1600
Melting Onset (Solidus), °C 1770
1550
Specific Heat Capacity, J/kg-K 400
560
Thermal Conductivity, W/m-K 18
7.1
Thermal Expansion, µm/m-K 12
9.6

Otherwise Unclassified Properties

Base Metal Price, % relative 70
36
Density, g/cm3 9.5
4.4
Embodied Carbon, kg CO2/kg material 11
38
Embodied Energy, MJ/kg 170
610
Embodied Water, L/kg 160
200

Common Calculations

Stiffness to Weight: Axial, points 12
13
Stiffness to Weight: Bending, points 21
35
Strength to Weight: Axial, points 26 to 63
48 to 60
Strength to Weight: Bending, points 21 to 39
42 to 49
Thermal Diffusivity, mm2/s 4.7
2.9
Thermal Shock Resistance, points 26 to 64
54 to 68

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.75 to 0.85
0 to 0.1
Chlorine (Cl), % 0
0 to 0.2
Chromium (Cr), % 4.0 to 4.8
0
Cobalt (Co), % 11 to 13
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 55.9 to 63.5
0 to 0.4
Manganese (Mn), % 0.2 to 0.4
0
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 0 to 0.3
0
Nitrogen (N), % 0
0 to 0.040
Oxygen (O), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.4
0 to 0.1
Sodium (Na), % 0
0 to 0.2
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
87 to 91
Tungsten (W), % 18.5 to 21
0
Vanadium (V), % 1.5 to 2.1
3.5 to 4.5
Residuals, % 0
0 to 0.4