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EN 1.4308 Stainless Steel vs. Grade 37 Titanium

EN 1.4308 stainless steel belongs to the iron alloys classification, while grade 37 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4308 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, % 34
22
Fatigue Strength, MPa 160
170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Tensile Strength: Ultimate (UTS), MPa 510
390
Tensile Strength: Yield (Proof), MPa 200
250

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 960
310
Melting Completion (Liquidus), °C 1420
1650
Melting Onset (Solidus), °C 1380
1600
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 17
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
6.8

Otherwise Unclassified Properties

Base Metal Price, % relative 15
36
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.0
31
Embodied Energy, MJ/kg 43
500
Embodied Water, L/kg 150
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
76
Resilience: Unit (Modulus of Resilience), kJ/m3 100
280
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
26
Thermal Diffusivity, mm2/s 4.1
8.4
Thermal Shock Resistance, points 11
29

Alloy Composition


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Aluminum (Al), % 0
1.0 to 2.0
Carbon (C), % 0 to 0.070
0 to 0.080
Chromium (Cr), % 18 to 20
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 65.9 to 74
0 to 0.3
Manganese (Mn), % 0 to 1.5
0
Nickel (Ni), % 8.0 to 11
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
96.9 to 99
Residuals, % 0
0 to 0.4