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AISI 348H Stainless Steel vs. Titanium 6-5-0.5

AISI 348H stainless steel belongs to the iron alloys classification, while titanium 6-5-0.5 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 AISI 348H stainless steel and the bottom bar is titanium 6-5-0.5.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 40
6.7
Fatigue Strength, MPa 200
530
Poisson's Ratio 0.28
0.32
Reduction in Area, % 51
23
Shear Modulus, GPa 77
40
Shear Strength, MPa 400
630
Tensile Strength: Ultimate (UTS), MPa 580
1080
Tensile Strength: Yield (Proof), MPa 230
990

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 940
300
Melting Completion (Liquidus), °C 1430
1610
Melting Onset (Solidus), °C 1390
1560
Specific Heat Capacity, J/kg-K 480
550
Thermal Conductivity, W/m-K 15
4.2
Thermal Expansion, µm/m-K 16
9.4

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.1

Otherwise Unclassified Properties

Base Metal Price, % relative 20
41
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 3.9
33
Embodied Energy, MJ/kg 56
540
Embodied Water, L/kg 150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
71
Resilience: Unit (Modulus of Resilience), kJ/m3 140
4630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
35
Strength to Weight: Axial, points 21
67
Strength to Weight: Bending, points 20
52
Thermal Diffusivity, mm2/s 4.1
1.7
Thermal Shock Resistance, points 13
79

Alloy Composition

Aluminum (Al), % 0
5.7 to 6.3
Carbon (C), % 0.040 to 0.1
0 to 0.080
Chromium (Cr), % 17 to 19
0
Cobalt (Co), % 0 to 0.2
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 63.8 to 73.6
0 to 0.2
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 0
0.25 to 0.75
Nickel (Ni), % 9.0 to 13
0
Niobium (Nb), % 0.32 to 1.0
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.19
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0 to 0.1
0
Titanium (Ti), % 0
85.6 to 90.1
Zirconium (Zr), % 0
4.0 to 6.0
Residuals, % 0
0 to 0.4