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EN 1.7139 Steel vs. Grade 37 Titanium

EN 1.7139 steel belongs to the iron alloys classification, while grade 37 titanium belongs to the titanium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is EN 1.7139 steel and the bottom bar is grade 37 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 480 to 1390
390

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 420
310
Melting Completion (Liquidus), °C 1460
1650
Melting Onset (Solidus), °C 1420
1600
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 44
21
Thermal Expansion, µm/m-K 13
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
6.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.4
31
Embodied Energy, MJ/kg 19
500
Embodied Water, L/kg 51
120

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 17 to 49
24
Strength to Weight: Bending, points 17 to 35
26
Thermal Diffusivity, mm2/s 12
8.4
Thermal Shock Resistance, points 14 to 41
29

Alloy Composition

Aluminum (Al), % 0
1.0 to 2.0
Carbon (C), % 0.14 to 0.19
0 to 0.080
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 96.8 to 98
0 to 0.3
Manganese (Mn), % 1.0 to 1.3
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0
Sulfur (S), % 0.020 to 0.040
0
Titanium (Ti), % 0
96.9 to 99
Residuals, % 0
0 to 0.4