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Grade 38 Titanium vs. S21603 Stainless Steel

Grade 38 titanium belongs to the titanium alloys classification, while S21603 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 38 titanium and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
45
Fatigue Strength, MPa 530
360
Poisson's Ratio 0.32
0.28
Reduction in Area, % 29
57
Shear Modulus, GPa 40
79
Shear Strength, MPa 600
490
Tensile Strength: Ultimate (UTS), MPa 1000
690
Tensile Strength: Yield (Proof), MPa 910
390

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 330
990
Melting Completion (Liquidus), °C 1620
1420
Melting Onset (Solidus), °C 1570
1380
Specific Heat Capacity, J/kg-K 550
480
Thermal Expansion, µm/m-K 9.3
17

Otherwise Unclassified Properties

Base Metal Price, % relative 36
17
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 35
3.6
Embodied Energy, MJ/kg 560
50
Embodied Water, L/kg 160
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
270
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
380
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 62
25
Strength to Weight: Bending, points 49
22
Thermal Shock Resistance, points 72
15

Alloy Composition

Aluminum (Al), % 3.5 to 4.5
0
Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 0
17.5 to 22
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 1.2 to 1.8
57.6 to 67.8
Manganese (Mn), % 0
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0 to 0.030
0.25 to 0.5
Oxygen (O), % 0.2 to 0.3
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 89.9 to 93.1
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0