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Grade 1 Titanium vs. EN 1.5521 Steel

Grade 1 titanium belongs to the titanium alloys classification, while EN 1.5521 steel belongs to the iron alloys.

For each property being compared, the top bar is grade 1 titanium and the bottom bar is EN 1.5521 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
130 to 180
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 28
11 to 21
Fatigue Strength, MPa 170
210 to 310
Poisson's Ratio 0.32
0.29
Reduction in Area, % 36
59 to 72
Shear Modulus, GPa 39
73
Shear Strength, MPa 200
310 to 360
Tensile Strength: Ultimate (UTS), MPa 310
430 to 1390
Tensile Strength: Yield (Proof), MPa 220
300 to 490

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
400
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 20
51
Thermal Expansion, µm/m-K 8.8
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 37
1.9
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
1.4
Embodied Energy, MJ/kg 510
19
Embodied Water, L/kg 110
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
44 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 230
250 to 630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 19
15 to 49
Strength to Weight: Bending, points 23
16 to 35
Thermal Diffusivity, mm2/s 8.2
14
Thermal Shock Resistance, points 24
13 to 41

Alloy Composition

Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0 to 0.080
0.16 to 0.2
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
98 to 98.9
Manganese (Mn), % 0
0.9 to 1.2
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.3
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 99.095 to 100
0
Residuals, % 0 to 0.4
0