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EN 1.8550 Steel vs. Grade 4 Titanium

EN 1.8550 steel belongs to the iron alloys classification, while grade 4 titanium belongs to the titanium 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 EN 1.8550 steel and the bottom bar is grade 4 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
200
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 11
17
Fatigue Strength, MPa 470
340
Impact Strength: V-Notched Charpy, J 34
23
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
41
Shear Strength, MPa 600
390
Tensile Strength: Ultimate (UTS), MPa 1000
640
Tensile Strength: Yield (Proof), MPa 760
530

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 440
320
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1410
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 40
19
Thermal Expansion, µm/m-K 13
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.7
31
Embodied Energy, MJ/kg 23
500
Embodied Water, L/kg 67
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
100
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
1330
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 36
40
Strength to Weight: Bending, points 29
37
Thermal Diffusivity, mm2/s 11
7.6
Thermal Shock Resistance, points 29
46

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0 to 0.080
Chromium (Cr), % 1.5 to 1.8
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 94.4 to 96.3
0 to 0.5
Manganese (Mn), % 0.4 to 0.7
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.85 to 1.2
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0
Sulfur (S), % 0 to 0.035
0
Titanium (Ti), % 0
98.6 to 100
Residuals, % 0
0 to 0.4