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EN 1.4308 Stainless Steel vs. Grade 30 Titanium

EN 1.4308 stainless steel belongs to the iron alloys classification, while grade 30 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, 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 30 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34
23
Fatigue Strength, MPa 160
250
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
41
Tensile Strength: Ultimate (UTS), MPa 510
390
Tensile Strength: Yield (Proof), MPa 200
350

Thermal Properties

Latent Heat of Fusion, J/g 290
420
Maximum Temperature: Mechanical, °C 960
320
Melting Completion (Liquidus), °C 1420
1660
Melting Onset (Solidus), °C 1380
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 15
21
Thermal Expansion, µm/m-K 17
8.7

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
6.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.0
36
Embodied Energy, MJ/kg 43
600
Embodied Water, L/kg 150
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
86
Resilience: Unit (Modulus of Resilience), kJ/m3 100
590
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
8.6
Thermal Shock Resistance, points 11
30

Alloy Composition


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Carbon (C), % 0 to 0.070
0 to 0.080
Chromium (Cr), % 18 to 20
0
Cobalt (Co), % 0
0.2 to 0.8
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
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98 to 99.76
Residuals, % 0
0 to 0.4