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Grade 4 Titanium vs. SAE-AISI 6150 Steel

Grade 4 titanium belongs to the titanium alloys classification, while SAE-AISI 6150 steel belongs to the iron alloys. There are 31 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 grade 4 titanium and the bottom bar is SAE-AISI 6150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
200 to 350
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 17
15 to 23
Fatigue Strength, MPa 340
300 to 750
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 390
400 to 730
Tensile Strength: Ultimate (UTS), MPa 640
630 to 1200
Tensile Strength: Yield (Proof), MPa 530
420 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
420
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 19
46
Thermal Expansion, µm/m-K 9.4
12 to 13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.1
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 6.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.3
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
2.0
Embodied Energy, MJ/kg 500
28
Embodied Water, L/kg 110
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
130 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 1330
460 to 3590
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 40
22 to 43
Strength to Weight: Bending, points 37
21 to 32
Thermal Diffusivity, mm2/s 7.6
13
Thermal Shock Resistance, points 46
20 to 38

Alloy Composition

Carbon (C), % 0 to 0.080
0.48 to 0.53
Chromium (Cr), % 0
0.8 to 1.1
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
96.7 to 97.7
Manganese (Mn), % 0
0.7 to 0.9
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 98.6 to 100
0
Vanadium (V), % 0
0.15 to 0.3
Residuals, % 0 to 0.4
0