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ASTM B817 Type I vs. AWS ERTi-1

Both ASTM B817 type I and AWS ERTi-1 are titanium alloys. They have 89% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type I and the bottom bar is AWS ERTi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
110
Elongation at Break, % 4.0 to 13
24
Fatigue Strength, MPa 360 to 520
120
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 770 to 960
240
Tensile Strength: Yield (Proof), MPa 700 to 860
170

Thermal Properties

Latent Heat of Fusion, J/g 410
420
Maximum Temperature: Mechanical, °C 340
320
Melting Completion (Liquidus), °C 1600
1670
Melting Onset (Solidus), °C 1550
1620
Specific Heat Capacity, J/kg-K 560
540
Thermal Conductivity, W/m-K 7.1
21
Thermal Expansion, µm/m-K 9.6
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 36
37
Density, g/cm3 4.4
4.5
Embodied Carbon, kg CO2/kg material 38
31
Embodied Energy, MJ/kg 610
510
Embodied Water, L/kg 200
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 30 to 120
52
Resilience: Unit (Modulus of Resilience), kJ/m3 2310 to 3540
140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
35
Strength to Weight: Axial, points 48 to 60
15
Strength to Weight: Bending, points 42 to 49
19
Thermal Diffusivity, mm2/s 2.9
8.7
Thermal Shock Resistance, points 54 to 68
19

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
0 to 0.030
Chlorine (Cl), % 0 to 0.2
0
Hydrogen (H), % 0 to 0.015
0 to 0.0050
Iron (Fe), % 0 to 0.4
0 to 0.080
Nitrogen (N), % 0 to 0.040
0 to 0.012
Oxygen (O), % 0 to 0.3
0.030 to 0.1
Silicon (Si), % 0 to 0.1
0
Sodium (Na), % 0 to 0.2
0
Titanium (Ti), % 87 to 91
99.773 to 99.97
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0