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Grade 4 Titanium vs. EN 1.7380 Steel

Grade 4 titanium belongs to the titanium alloys classification, while EN 1.7380 steel belongs to the iron alloys. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 4 titanium and the bottom bar is EN 1.7380 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
160 to 170
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 17
19 to 20
Fatigue Strength, MPa 340
200 to 230
Impact Strength: V-Notched Charpy, J 23
31 to 35
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
74
Shear Strength, MPa 390
330 to 350
Tensile Strength: Ultimate (UTS), MPa 640
540 to 550
Tensile Strength: Yield (Proof), MPa 530
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Maximum Temperature: Mechanical, °C 320
460
Melting Completion (Liquidus), °C 1660
1470
Melting Onset (Solidus), °C 1610
1430
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 19
39
Thermal Expansion, µm/m-K 9.4
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
3.8
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 31
1.8
Embodied Energy, MJ/kg 500
23
Embodied Water, L/kg 110
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
87 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 1330
230 to 280
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 40
19 to 20
Strength to Weight: Bending, points 37
19
Thermal Diffusivity, mm2/s 7.6
11
Thermal Shock Resistance, points 46
15 to 16

Alloy Composition

Carbon (C), % 0 to 0.080
0.080 to 0.14
Chromium (Cr), % 0
2.0 to 2.5
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
94.6 to 96.6
Manganese (Mn), % 0
0.4 to 0.8
Molybdenum (Mo), % 0
0.9 to 1.1
Nitrogen (N), % 0 to 0.050
0 to 0.012
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 98.6 to 100
0
Residuals, % 0 to 0.4
0