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AISI 310S Stainless Steel vs. Grade 21 Titanium

AISI 310S 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 AISI 310S 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, % 34 to 44
9.0 to 17
Fatigue Strength, MPa 250 to 280
550 to 660
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 79
51
Shear Strength, MPa 420 to 470
550 to 790
Tensile Strength: Ultimate (UTS), MPa 600 to 710
890 to 1340
Tensile Strength: Yield (Proof), MPa 270 to 350
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 310
410
Maximum Temperature: Mechanical, °C 1100
310
Melting Completion (Liquidus), °C 1450
1740
Melting Onset (Solidus), °C 1400
1690
Specific Heat Capacity, J/kg-K 480
500
Thermal Conductivity, W/m-K 16
7.5
Thermal Expansion, µm/m-K 16
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 25
60
Density, g/cm3 7.9
5.4
Embodied Carbon, kg CO2/kg material 4.3
32
Embodied Energy, MJ/kg 61
490
Embodied Water, L/kg 190
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 220
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 190 to 310
2760 to 5010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
32
Strength to Weight: Axial, points 21 to 25
46 to 69
Strength to Weight: Bending, points 20 to 22
38 to 50
Thermal Diffusivity, mm2/s 4.1
2.8
Thermal Shock Resistance, points 14 to 16
66 to 100

Alloy Composition


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Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.080
0 to 0.050
Chromium (Cr), % 24 to 26
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 48.3 to 57
0 to 0.4
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0
14 to 16
Nickel (Ni), % 19 to 22
0
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 0.045
0
Silicon (Si), % 0 to 1.5
0.15 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
76 to 81.2
Residuals, % 0
0 to 0.4

Comparable Variants