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EN 1.4005 Stainless Steel vs. Grade 21 Titanium

EN 1.4005 stainless steel belongs to the iron alloys classification, while grade 21 titanium belongs to the titanium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4005 stainless steel and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
140
Elongation at Break, % 13 to 21
9.0 to 17
Fatigue Strength, MPa 240 to 290
550 to 660
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
51
Shear Strength, MPa 390 to 450
550 to 790
Tensile Strength: Ultimate (UTS), MPa 630 to 750
890 to 1340
Tensile Strength: Yield (Proof), MPa 370 to 500
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 270
410
Maximum Temperature: Mechanical, °C 760
310
Melting Completion (Liquidus), °C 1440
1740
Melting Onset (Solidus), °C 1400
1690
Specific Heat Capacity, J/kg-K 480
500
Thermal Conductivity, W/m-K 30
7.5
Thermal Expansion, µm/m-K 10
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
60
Density, g/cm3 7.7
5.4
Embodied Carbon, kg CO2/kg material 2.0
32
Embodied Energy, MJ/kg 28
490
Embodied Water, L/kg 100
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 650
2760 to 5010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 23 to 27
46 to 69
Strength to Weight: Bending, points 21 to 24
38 to 50
Thermal Diffusivity, mm2/s 8.1
2.8
Thermal Shock Resistance, points 23 to 27
66 to 100

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.060 to 0.15
0 to 0.050
Chromium (Cr), % 12 to 14
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 82.4 to 87.8
0 to 0.4
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0 to 0.6
14 to 16
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.17
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.15 to 0.25
Sulfur (S), % 0.15 to 0.35
0
Titanium (Ti), % 0
76 to 81.2
Residuals, % 0
0 to 0.4

Comparable Variants