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ASTM B817 Type II vs. AWS ERNiCu-7

ASTM B817 type II belongs to the titanium alloys classification, while AWS ERNiCu-7 belongs to the nickel 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 ASTM B817 type II and the bottom bar is AWS ERNiCu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
160
Elongation at Break, % 3.0 to 13
34
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 40
61
Tensile Strength: Ultimate (UTS), MPa 900 to 960
550

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Melting Completion (Liquidus), °C 1580
1280
Melting Onset (Solidus), °C 1530
1240
Specific Heat Capacity, J/kg-K 550
440
Thermal Expansion, µm/m-K 9.9
13

Otherwise Unclassified Properties

Base Metal Price, % relative 37
50
Density, g/cm3 4.6
8.7
Embodied Carbon, kg CO2/kg material 40
8.5
Embodied Energy, MJ/kg 650
120
Embodied Water, L/kg 220
250

Common Calculations

Stiffness to Weight: Axial, points 13
10
Stiffness to Weight: Bending, points 34
21
Strength to Weight: Axial, points 55 to 58
18
Strength to Weight: Bending, points 45 to 47
17
Thermal Shock Resistance, points 62 to 66
19

Alloy Composition

Aluminum (Al), % 5.0 to 6.0
0 to 1.3
Carbon (C), % 0 to 0.1
0 to 0.15
Chlorine (Cl), % 0 to 0.2
0
Copper (Cu), % 0.35 to 1.0
18.3 to 36.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0.35 to 1.0
0 to 2.5
Manganese (Mn), % 0
0 to 4.0
Nickel (Ni), % 0
62 to 69
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.1
0 to 1.3
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 1.5 to 2.5
0
Titanium (Ti), % 82.1 to 87.8
1.5 to 3.0
Vanadium (V), % 5.0 to 6.0
0
Residuals, % 0 to 0.4
0 to 0.5