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Grade 2 Titanium vs. AISI 434 Stainless Steel

Grade 2 titanium belongs to the titanium alloys classification, while AISI 434 stainless steel belongs to the iron alloys. There are 31 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 grade 2 titanium and the bottom bar is AISI 434 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
170
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 23
24
Fatigue Strength, MPa 250
220
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 38
78
Shear Strength, MPa 270
330
Tensile Strength: Ultimate (UTS), MPa 420
520
Tensile Strength: Yield (Proof), MPa 360
320

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 320
880
Melting Completion (Liquidus), °C 1660
1510
Melting Onset (Solidus), °C 1610
1430
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 22
25
Thermal Expansion, µm/m-K 9.0
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 7.2
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
9.5
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 31
2.4
Embodied Energy, MJ/kg 510
33
Embodied Water, L/kg 110
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
110
Resilience: Unit (Modulus of Resilience), kJ/m3 600
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 26
19
Strength to Weight: Bending, points 28
18
Thermal Diffusivity, mm2/s 8.9
6.7
Thermal Shock Resistance, points 32
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.12
Chromium (Cr), % 0
16 to 18
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
78.6 to 83.3
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
0.75 to 1.3
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 98.9 to 100
0
Residuals, % 0 to 0.4
0