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S32803 Stainless Steel vs. Grade 12 Titanium

S32803 stainless steel belongs to the iron alloys classification, while grade 12 titanium belongs to the titanium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S32803 stainless steel and the bottom bar is grade 12 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
170
Elastic (Young's, Tensile) Modulus, GPa 210
110
Elongation at Break, % 18
21
Fatigue Strength, MPa 350
280
Poisson's Ratio 0.27
0.32
Shear Modulus, GPa 81
39
Shear Strength, MPa 420
330
Tensile Strength: Ultimate (UTS), MPa 680
530
Tensile Strength: Yield (Proof), MPa 560
410

Thermal Properties

Latent Heat of Fusion, J/g 300
420
Maximum Temperature: Mechanical, °C 1100
320
Melting Completion (Liquidus), °C 1450
1660
Melting Onset (Solidus), °C 1400
1610
Specific Heat Capacity, J/kg-K 480
540
Thermal Conductivity, W/m-K 16
21
Thermal Expansion, µm/m-K 11
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 19
37
Density, g/cm3 7.7
4.5
Embodied Carbon, kg CO2/kg material 3.7
31
Embodied Energy, MJ/kg 53
500
Embodied Water, L/kg 180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 760
770
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 25
32
Strength to Weight: Bending, points 22
32
Thermal Diffusivity, mm2/s 4.4
8.5
Thermal Shock Resistance, points 22
37

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.080
Chromium (Cr), % 28 to 29
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 62.9 to 67.1
0 to 0.3
Manganese (Mn), % 0 to 0.5
0
Molybdenum (Mo), % 1.8 to 2.5
0.2 to 0.4
Nickel (Ni), % 3.0 to 4.0
0.6 to 0.9
Niobium (Nb), % 0.15 to 0.5
0
Nitrogen (N), % 0 to 0.020
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.55
0
Sulfur (S), % 0 to 0.0035
0
Titanium (Ti), % 0
97.6 to 99.2
Residuals, % 0
0 to 0.4