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EN 1.4621 Stainless Steel vs. Grade 24 Titanium

EN 1.4621 stainless steel belongs to the iron alloys classification, while grade 24 titanium belongs to the titanium alloys. There are 29 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 1.4621 stainless steel and the bottom bar is grade 24 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 25
11
Fatigue Strength, MPa 190
550
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 78
40
Shear Strength, MPa 320
610
Tensile Strength: Ultimate (UTS), MPa 500
1010
Tensile Strength: Yield (Proof), MPa 270
940

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 970
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 21
7.1
Thermal Expansion, µm/m-K 11
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.1
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 2.8
43
Embodied Energy, MJ/kg 41
710
Embodied Water, L/kg 140
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 190
4160
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 18
63
Strength to Weight: Bending, points 18
50
Thermal Diffusivity, mm2/s 5.7
2.9
Thermal Shock Resistance, points 17
72

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 20 to 21.5
0
Copper (Cu), % 0.1 to 1.0
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 74.4 to 79.7
0 to 0.4
Manganese (Mn), % 0 to 1.0
0
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0 to 0.030
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
87.5 to 91
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4