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EN 1.4309 Stainless Steel vs. Grade C-3 Titanium

EN 1.4309 stainless steel belongs to the iron alloys classification, while grade C-3 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 1.4309 stainless steel and the bottom bar is grade C-3 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
200
Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 34
13
Fatigue Strength, MPa 170
260
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
40
Tensile Strength: Ultimate (UTS), MPa 490
500
Tensile Strength: Yield (Proof), MPa 210
430

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 2.2
3.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 16
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.1
31
Embodied Energy, MJ/kg 45
510
Embodied Water, L/kg 150
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
65
Resilience: Unit (Modulus of Resilience), kJ/m3 110
880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 18
31
Strength to Weight: Bending, points 18
31
Thermal Diffusivity, mm2/s 4.1
8.5
Thermal Shock Resistance, points 11
39

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.1
Chromium (Cr), % 18 to 20
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 64.2 to 73
0 to 0.25
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 12
0 to 0.050
Nitrogen (N), % 0 to 0.2
0
Oxygen (O), % 0
0 to 0.4
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
98.8 to 100
Residuals, % 0
0 to 0.4