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ASTM B817 Type I vs. EN 1.7239 Steel

ASTM B817 type I belongs to the titanium alloys classification, while EN 1.7239 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM B817 type I and the bottom bar is EN 1.7239 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 770 to 960
660 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 340
420
Melting Completion (Liquidus), °C 1600
1460
Melting Onset (Solidus), °C 1550
1410
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 7.1
44
Thermal Expansion, µm/m-K 9.6
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.3
Density, g/cm3 4.4
7.8
Embodied Carbon, kg CO2/kg material 38
1.5
Embodied Energy, MJ/kg 610
20
Embodied Water, L/kg 200
50

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 48 to 60
23 to 71
Strength to Weight: Bending, points 42 to 49
21 to 45
Thermal Diffusivity, mm2/s 2.9
12
Thermal Shock Resistance, points 54 to 68
19 to 59

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
0.56 to 0.64
Chlorine (Cl), % 0 to 0.2
0
Chromium (Cr), % 0
0.7 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
96.8 to 98
Manganese (Mn), % 0
0.7 to 1.0
Molybdenum (Mo), % 0
0.060 to 0.15
Nitrogen (N), % 0 to 0.040
0
Oxygen (O), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.1
0 to 0.4
Sodium (Na), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 87 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0