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Grade 7 Titanium vs. S35135 Stainless Steel

Grade 7 titanium belongs to the titanium alloys classification, while S35135 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is grade 7 titanium and the bottom bar is S35135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 24
34
Fatigue Strength, MPa 250
180
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 38
79
Shear Strength, MPa 270
390
Tensile Strength: Ultimate (UTS), MPa 420
590
Tensile Strength: Yield (Proof), MPa 340
230

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Maximum Temperature: Mechanical, °C 320
1100
Melting Completion (Liquidus), °C 1660
1430
Melting Onset (Solidus), °C 1610
1380
Specific Heat Capacity, J/kg-K 540
470
Thermal Expansion, µm/m-K 9.2
16

Otherwise Unclassified Properties

Density, g/cm3 4.5
8.1
Embodied Carbon, kg CO2/kg material 47
6.8
Embodied Energy, MJ/kg 800
94
Embodied Water, L/kg 470
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
160
Resilience: Unit (Modulus of Resilience), kJ/m3 560
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 26
20
Strength to Weight: Bending, points 28
19
Thermal Shock Resistance, points 31
13

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.080
Chromium (Cr), % 0
20 to 25
Copper (Cu), % 0
0 to 0.75
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
28.3 to 45
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
4.0 to 4.8
Nickel (Ni), % 0
30 to 38
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Palladium (Pd), % 0.12 to 0.25
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0.6 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 98.7 to 99.88
0.4 to 1.0
Residuals, % 0 to 0.4
0