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SAE-AISI 94B17 Steel vs. Grade 26 Titanium

SAE-AISI 94B17 steel belongs to the iron alloys classification, while grade 26 titanium belongs to the titanium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 94B17 steel and the bottom bar is grade 26 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 25
23
Fatigue Strength, MPa 200
250
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
41
Shear Strength, MPa 280
250
Tensile Strength: Ultimate (UTS), MPa 440
390
Tensile Strength: Yield (Proof), MPa 270
350

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Maximum Temperature: Mechanical, °C 410
320
Melting Completion (Liquidus), °C 1460
1660
Melting Onset (Solidus), °C 1420
1610
Specific Heat Capacity, J/kg-K 470
540
Thermal Conductivity, W/m-K 39
21
Thermal Expansion, µm/m-K 13
9.2

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
6.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
37
Density, g/cm3 7.8
4.5
Embodied Carbon, kg CO2/kg material 1.5
33
Embodied Energy, MJ/kg 20
530
Embodied Water, L/kg 49
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96
85
Resilience: Unit (Modulus of Resilience), kJ/m3 200
580
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
35
Strength to Weight: Axial, points 16
24
Strength to Weight: Bending, points 16
26
Thermal Diffusivity, mm2/s 10
8.6
Thermal Shock Resistance, points 13
28

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.15 to 0.2
0 to 0.080
Chromium (Cr), % 0.3 to 0.5
0
Hydrogen (H), % 0
0 to 0.015
Iron (Fe), % 97.1 to 98.3
0 to 0.3
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.080 to 0.15
0
Nickel (Ni), % 0.3 to 0.6
0
Nitrogen (N), % 0
0 to 0.030
Oxygen (O), % 0
0 to 0.25
Phosphorus (P), % 0 to 0.035
0
Ruthenium (Ru), % 0
0.080 to 0.14
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
98.8 to 99.92
Residuals, % 0
0 to 0.4