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EN 1.4028 Stainless Steel vs. Grade 4 Titanium

EN 1.4028 stainless steel belongs to the iron alloys classification, while grade 4 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4028 stainless steel and the bottom bar is grade 4 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 11 to 17
17
Fatigue Strength, MPa 230 to 400
340
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
41
Shear Strength, MPa 410 to 550
390
Tensile Strength: Ultimate (UTS), MPa 660 to 930
640
Tensile Strength: Yield (Proof), MPa 390 to 730
530

Thermal Properties

Latent Heat of Fusion, J/g 270
420
Maximum Temperature: Mechanical, °C 760
320
Melting Completion (Liquidus), °C 1440
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 30
19
Thermal Expansion, µm/m-K 11
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 1.9
31
Embodied Energy, MJ/kg 27
500
Embodied Water, L/kg 100
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 96
100
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
1330
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 24 to 33
40
Strength to Weight: Bending, points 22 to 27
37
Thermal Diffusivity, mm2/s 8.1
7.6
Thermal Shock Resistance, points 23 to 32
46

Alloy Composition

Carbon (C), % 0.26 to 0.35
0 to 0.080
Chromium (Cr), % 12 to 14
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 83.1 to 87.7
0 to 0.5
Manganese (Mn), % 0 to 1.5
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
98.6 to 100
Residuals, % 0
0 to 0.4