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AISI 420F Stainless Steel vs. Grade C-5 Titanium

AISI 420F stainless steel belongs to the iron alloys classification, while grade C-5 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 AISI 420F stainless steel and the bottom bar is grade C-5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
310
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 18
6.7
Fatigue Strength, MPa 270
510
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
40
Tensile Strength: Ultimate (UTS), MPa 740
1000
Tensile Strength: Yield (Proof), MPa 430
940

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 760
340
Melting Completion (Liquidus), °C 1440
1610
Melting Onset (Solidus), °C 1390
1560
Specific Heat Capacity, J/kg-K 480
560
Thermal Conductivity, W/m-K 25
7.1
Thermal Expansion, µm/m-K 10
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.7
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
36
Density, g/cm3 7.7
4.4
Embodied Carbon, kg CO2/kg material 2.0
38
Embodied Energy, MJ/kg 28
610
Embodied Water, L/kg 100
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
66
Resilience: Unit (Modulus of Resilience), kJ/m3 480
4200
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 27
63
Strength to Weight: Bending, points 23
50
Thermal Diffusivity, mm2/s 6.8
2.9
Thermal Shock Resistance, points 27
71

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.3 to 0.4
0 to 0.1
Chromium (Cr), % 12 to 14
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 82.4 to 87.6
0 to 0.4
Manganese (Mn), % 0 to 1.3
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0.15 to 0.35
0
Titanium (Ti), % 0
87.5 to 91
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4