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S20910 Stainless Steel vs. Grade 30 Titanium

S20910 stainless steel belongs to the iron alloys classification, while grade 30 titanium belongs to the titanium alloys. There are 28 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 S20910 stainless steel and the bottom bar is grade 30 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 14 to 39
23
Fatigue Strength, MPa 310 to 460
250
Poisson's Ratio 0.28
0.32
Reduction in Area, % 56 to 62
34
Shear Modulus, GPa 79
41
Shear Strength, MPa 500 to 570
240
Tensile Strength: Ultimate (UTS), MPa 780 to 940
390
Tensile Strength: Yield (Proof), MPa 430 to 810
350

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1080
320
Melting Completion (Liquidus), °C 1420
1660
Melting Onset (Solidus), °C 1380
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 13
21
Thermal Expansion, µm/m-K 16
8.7

Otherwise Unclassified Properties

Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 4.8
36
Embodied Energy, MJ/kg 68
600
Embodied Water, L/kg 180
230

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
86
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 28 to 33
24
Strength to Weight: Bending, points 24 to 27
26
Thermal Diffusivity, mm2/s 3.6
8.6
Thermal Shock Resistance, points 17 to 21
30

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.080
Chromium (Cr), % 20.5 to 23.5
0
Cobalt (Co), % 0
0.2 to 0.8
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 52.1 to 62.1
0 to 0.3
Manganese (Mn), % 4.0 to 6.0
0
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Palladium (Pd), % 0
0.040 to 0.080
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
98 to 99.76
Vanadium (V), % 0.1 to 0.3
0
Residuals, % 0
0 to 0.4