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EN 1.4938 +A Steel vs. Annealed Grade 28 Titanium

EN 1.4938 +A steel belongs to the iron alloys classification, while annealed grade 28 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4938 +A steel and the bottom bar is annealed grade 28 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17
17
Fatigue Strength, MPa 390
350
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
40
Shear Strength, MPa 540
440
Tensile Strength: Ultimate (UTS), MPa 870
710
Tensile Strength: Yield (Proof), MPa 640
540

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 750
330
Melting Completion (Liquidus), °C 1460
1640
Melting Onset (Solidus), °C 1420
1590
Specific Heat Capacity, J/kg-K 470
550
Thermal Conductivity, W/m-K 30
8.3
Thermal Expansion, µm/m-K 11
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.3
37
Embodied Energy, MJ/kg 47
600
Embodied Water, L/kg 110
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1050
1370
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 31
44
Strength to Weight: Bending, points 26
39
Thermal Diffusivity, mm2/s 8.1
3.4
Thermal Shock Resistance, points 30
48

Alloy Composition


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Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.080 to 0.15
0 to 0.080
Chromium (Cr), % 11 to 12.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 80.5 to 84.8
0 to 0.25
Manganese (Mn), % 0.4 to 0.9
0
Molybdenum (Mo), % 1.5 to 2.0
0
Nickel (Ni), % 2.0 to 3.0
0
Nitrogen (N), % 0.020 to 0.040
0 to 0.030
Oxygen (O), % 0
0 to 0.15
Phosphorus (P), % 0 to 0.025
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
92.4 to 95.4
Vanadium (V), % 0.25 to 0.4
2.0 to 3.0
Residuals, % 0
0 to 0.4