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EN 1.4310 Stainless Steel vs. Grade 21 Titanium

EN 1.4310 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 (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4310 stainless steel and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 14 to 45
9.0 to 17
Fatigue Strength, MPa 240 to 330
550 to 660
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
51
Shear Strength, MPa 510 to 550
550 to 790
Tensile Strength: Ultimate (UTS), MPa 730 to 900
890 to 1340
Tensile Strength: Yield (Proof), MPa 260 to 570
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 910
310
Melting Completion (Liquidus), °C 1420
1740
Melting Onset (Solidus), °C 1380
1690
Specific Heat Capacity, J/kg-K 480
500
Thermal Conductivity, W/m-K 15
7.5
Thermal Expansion, µm/m-K 18
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 14
60
Density, g/cm3 7.8
5.4
Embodied Carbon, kg CO2/kg material 2.9
32
Embodied Energy, MJ/kg 42
490
Embodied Water, L/kg 140
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 260
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 830
2760 to 5010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 26 to 32
46 to 69
Strength to Weight: Bending, points 23 to 27
38 to 50
Thermal Diffusivity, mm2/s 4.0
2.8
Thermal Shock Resistance, points 15 to 18
66 to 100

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0.050 to 0.15
0 to 0.050
Chromium (Cr), % 16 to 19
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 66.4 to 78
0 to 0.4
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0 to 0.8
14 to 16
Nickel (Ni), % 6.0 to 9.5
0
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0 to 0.1
0 to 0.030
Oxygen (O), % 0
0 to 0.17
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 2.0
0.15 to 0.25
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
76 to 81.2
Residuals, % 0
0 to 0.4

Comparable Variants