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Grade 6 Titanium vs. AISI 347H Stainless Steel

Grade 6 titanium belongs to the titanium alloys classification, while AISI 347H stainless steel belongs to the iron 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 grade 6 titanium and the bottom bar is AISI 347H stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 11
39
Fatigue Strength, MPa 290
200
Poisson's Ratio 0.32
0.28
Reduction in Area, % 27
51
Shear Modulus, GPa 39
77
Shear Strength, MPa 530
400
Tensile Strength: Ultimate (UTS), MPa 890
580
Tensile Strength: Yield (Proof), MPa 840
230

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 310
940
Melting Completion (Liquidus), °C 1580
1430
Melting Onset (Solidus), °C 1530
1390
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 7.8
16
Thermal Expansion, µm/m-K 9.4
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 36
19
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 30
3.6
Embodied Energy, MJ/kg 480
52
Embodied Water, L/kg 190
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
180
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 55
21
Strength to Weight: Bending, points 46
20
Thermal Diffusivity, mm2/s 3.2
4.2
Thermal Shock Resistance, points 65
13

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.080
0.040 to 0.1
Chromium (Cr), % 0
17 to 19
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
64.1 to 74
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0
9.0 to 13
Niobium (Nb), % 0
0 to 1.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0
Residuals, % 0 to 0.4
0