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EN 1.4424 Stainless Steel vs. Grade 37 Titanium

EN 1.4424 stainless steel belongs to the iron alloys classification, while grade 37 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 1.4424 stainless steel and the bottom bar is grade 37 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 28
22
Fatigue Strength, MPa 350 to 370
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 78
40
Shear Strength, MPa 520
240
Tensile Strength: Ultimate (UTS), MPa 800
390
Tensile Strength: Yield (Proof), MPa 480 to 500
250

Thermal Properties

Latent Heat of Fusion, J/g 310
420
Maximum Temperature: Mechanical, °C 960
310
Melting Completion (Liquidus), °C 1430
1650
Melting Onset (Solidus), °C 1390
1600
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 12
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
6.8

Otherwise Unclassified Properties

Base Metal Price, % relative 15
36
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 3.4
31
Embodied Energy, MJ/kg 46
500
Embodied Water, L/kg 140
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 200
76
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 640
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 29
24
Strength to Weight: Bending, points 25
26
Thermal Diffusivity, mm2/s 3.5
8.4
Thermal Shock Resistance, points 23
29

Alloy Composition

Aluminum (Al), % 0
1.0 to 2.0
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 18 to 19
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 68.6 to 72.4
0 to 0.3
Manganese (Mn), % 1.2 to 2.0
0
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 4.5 to 5.2
0
Nitrogen (N), % 0.050 to 0.1
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 1.4 to 2.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
96.9 to 99
Residuals, % 0
0 to 0.4