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Grade 3 Titanium vs. S39274 Stainless Steel

Grade 3 titanium belongs to the titanium alloys classification, while S39274 stainless steel belongs to the iron alloys. There are 32 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 grade 3 titanium and the bottom bar is S39274 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
270
Elastic (Young's, Tensile) Modulus, GPa 110
210
Elongation at Break, % 21
17
Fatigue Strength, MPa 300
380
Poisson's Ratio 0.32
0.27
Reduction in Area, % 34
34
Shear Modulus, GPa 39
81
Shear Strength, MPa 320
560
Tensile Strength: Ultimate (UTS), MPa 510
900
Tensile Strength: Yield (Proof), MPa 440
620

Thermal Properties

Latent Heat of Fusion, J/g 420
300
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1480
Melting Onset (Solidus), °C 1610
1430
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 9.2
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.6
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 37
24
Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 31
4.3
Embodied Energy, MJ/kg 510
60
Embodied Water, L/kg 110
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
140
Resilience: Unit (Modulus of Resilience), kJ/m3 910
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 32
32
Strength to Weight: Bending, points 32
26
Thermal Diffusivity, mm2/s 8.6
4.2
Thermal Shock Resistance, points 37
25

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0
0.2 to 0.8
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
57 to 65.6
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0
6.0 to 8.0
Nitrogen (N), % 0 to 0.050
0.24 to 0.32
Oxygen (O), % 0 to 0.35
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 98.8 to 100
0
Tungsten (W), % 0
1.5 to 2.5
Residuals, % 0 to 0.4
0