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EN 1.5508 Steel vs. Grade 1 Titanium

EN 1.5508 steel belongs to the iron alloys classification, while grade 1 titanium belongs to the titanium alloys.

For each property being compared, the top bar is EN 1.5508 steel and the bottom bar is grade 1 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 180
120
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 11 to 20
28
Fatigue Strength, MPa 210 to 320
170
Poisson's Ratio 0.29
0.32
Reduction in Area, % 62 to 74
36
Shear Modulus, GPa 73
39
Shear Strength, MPa 300 to 360
200
Tensile Strength: Ultimate (UTS), MPa 420 to 1460
310
Tensile Strength: Yield (Proof), MPa 310 to 490
220

Thermal Properties

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
7.3

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 230
79
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 640
230
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 15 to 52
19
Strength to Weight: Bending, points 16 to 36
23
Thermal Diffusivity, mm2/s 14
8.2
Thermal Shock Resistance, points 12 to 43
24

Alloy Composition

Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.2 to 0.25
0 to 0.080
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.25
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 97.9 to 99.199
0 to 0.2
Manganese (Mn), % 0.6 to 0.9
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.18
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
99.095 to 100
Residuals, % 0
0 to 0.4