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Grade 38 Titanium vs. S33228 Stainless Steel

Grade 38 titanium belongs to the titanium alloys classification, while S33228 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 S33228 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
34
Fatigue Strength, MPa 530
170
Poisson's Ratio 0.32
0.28
Reduction in Area, % 29
39
Shear Modulus, GPa 40
79
Shear Strength, MPa 600
380
Tensile Strength: Ultimate (UTS), MPa 1000
570
Tensile Strength: Yield (Proof), MPa 910
210

Thermal Properties

Latent Heat of Fusion, J/g 410
310
Maximum Temperature: Mechanical, °C 330
1100
Melting Completion (Liquidus), °C 1620
1410
Melting Onset (Solidus), °C 1570
1360
Specific Heat Capacity, J/kg-K 550
470
Thermal Expansion, µm/m-K 9.3
16

Otherwise Unclassified Properties

Base Metal Price, % relative 36
37
Density, g/cm3 4.5
8.0
Embodied Carbon, kg CO2/kg material 35
6.2
Embodied Energy, MJ/kg 560
89
Embodied Water, L/kg 160
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
150
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 62
20
Strength to Weight: Bending, points 49
19
Thermal Shock Resistance, points 72
13

Alloy Composition

Aluminum (Al), % 3.5 to 4.5
0 to 0.025
Carbon (C), % 0 to 0.080
0.040 to 0.080
Cerium (Ce), % 0
0.050 to 0.1
Chromium (Cr), % 0
26 to 28
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 1.2 to 1.8
36.5 to 42.3
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
31 to 33
Niobium (Nb), % 0
0.6 to 1.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0.2 to 0.3
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.3
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 89.9 to 93.1
0
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0