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ASTM B817 Type II vs. ASTM B522 Class II

ASTM B817 type II belongs to the titanium alloys classification, while ASTM B522 class II belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (11, 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 ASTM B817 type II and the bottom bar is ASTM B522 class II.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
96
Elongation at Break, % 3.0 to 13
1.1 to 28
Poisson's Ratio 0.32
0.41
Shear Modulus, GPa 40
34
Tensile Strength: Ultimate (UTS), MPa 900 to 960
280 to 490
Tensile Strength: Yield (Proof), MPa 780 to 900
120 to 210

Thermal Properties

Latent Heat of Fusion, J/g 400
77
Melting Completion (Liquidus), °C 1580
1030
Melting Onset (Solidus), °C 1530
1030
Specific Heat Capacity, J/kg-K 550
160
Thermal Expansion, µm/m-K 9.9
15

Otherwise Unclassified Properties

Density, g/cm3 4.6
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26 to 120
4.4 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 2890 to 3890
75 to 230
Stiffness to Weight: Axial, points 13
3.1
Stiffness to Weight: Bending, points 34
8.9
Strength to Weight: Axial, points 55 to 58
4.4 to 7.8
Strength to Weight: Bending, points 45 to 47
5.5 to 8.0
Thermal Shock Resistance, points 62 to 66
13 to 24

Alloy Composition


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Aluminum (Al), % 5.0 to 6.0
0
Carbon (C), % 0 to 0.1
0
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0.35 to 1.0
0
Gold (Au), % 0
68.5 to 69.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
0
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Platinum (Pt), % 0
5.5 to 6.5
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
24.5 to 25.5
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.1 to 87.8
0
Vanadium (V), % 5.0 to 6.0
0
Residuals, % 0 to 0.4
0 to 0.26