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Grade 30 Titanium vs. S30615 Stainless Steel

Grade 30 titanium belongs to the titanium alloys classification, while S30615 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 30 titanium and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 23
39
Fatigue Strength, MPa 250
270
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
75
Shear Strength, MPa 240
470
Tensile Strength: Ultimate (UTS), MPa 390
690
Tensile Strength: Yield (Proof), MPa 350
310

Thermal Properties

Latent Heat of Fusion, J/g 420
340
Maximum Temperature: Mechanical, °C 320
960
Melting Completion (Liquidus), °C 1660
1370
Melting Onset (Solidus), °C 1610
1320
Specific Heat Capacity, J/kg-K 540
500
Thermal Conductivity, W/m-K 21
14
Thermal Expansion, µm/m-K 8.7
16

Otherwise Unclassified Properties

Density, g/cm3 4.5
7.6
Embodied Carbon, kg CO2/kg material 36
3.7
Embodied Energy, MJ/kg 600
53
Embodied Water, L/kg 230
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86
220
Resilience: Unit (Modulus of Resilience), kJ/m3 590
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 24
25
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 8.6
3.7
Thermal Shock Resistance, points 30
16

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.5
Carbon (C), % 0 to 0.080
0.16 to 0.24
Chromium (Cr), % 0
17 to 19.5
Cobalt (Co), % 0.2 to 0.8
0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
56.7 to 65.3
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
13.5 to 16
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.040 to 0.080
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
3.2 to 4.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 98 to 99.76
0
Residuals, % 0 to 0.4
0