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S35315 Stainless Steel vs. Grade 25 Titanium

S35315 stainless steel belongs to the iron alloys classification, while grade 25 titanium belongs to the titanium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S35315 stainless steel and the bottom bar is grade 25 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 46
11
Fatigue Strength, MPa 280
550
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 78
40
Shear Strength, MPa 520
600
Tensile Strength: Ultimate (UTS), MPa 740
1000
Tensile Strength: Yield (Proof), MPa 300
940

Thermal Properties

Latent Heat of Fusion, J/g 330
410
Maximum Temperature: Mechanical, °C 1100
340
Melting Completion (Liquidus), °C 1370
1610
Melting Onset (Solidus), °C 1330
1560
Specific Heat Capacity, J/kg-K 480
560
Thermal Conductivity, W/m-K 12
7.1
Thermal Expansion, µm/m-K 16
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.0

Otherwise Unclassified Properties

Density, g/cm3 7.9
4.5
Embodied Carbon, kg CO2/kg material 5.7
43
Embodied Energy, MJ/kg 81
700
Embodied Water, L/kg 220
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
110
Resilience: Unit (Modulus of Resilience), kJ/m3 230
4220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 26
62
Strength to Weight: Bending, points 23
50
Thermal Diffusivity, mm2/s 3.1
2.8
Thermal Shock Resistance, points 17
71

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.8
Carbon (C), % 0.040 to 0.080
0 to 0.080
Cerium (Ce), % 0.030 to 0.1
0
Chromium (Cr), % 24 to 26
0
Hydrogen (H), % 0
0 to 0.013
Iron (Fe), % 33.6 to 40.6
0 to 0.4
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 34 to 36
0.3 to 0.8
Nitrogen (N), % 0.12 to 0.18
0 to 0.050
Oxygen (O), % 0
0 to 0.2
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.2 to 2.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
86.7 to 90.6
Vanadium (V), % 0
3.5 to 4.5
Residuals, % 0
0 to 0.4