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R58150 Titanium vs. Grade 21 Titanium

Both R58150 titanium and grade 21 titanium are titanium alloys. They have a moderately high 94% of their average alloy composition in common. There are 27 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 R58150 titanium and the bottom bar is grade 21 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
140
Elongation at Break, % 13
9.0 to 17
Fatigue Strength, MPa 330
550 to 660
Poisson's Ratio 0.32
0.32
Reduction in Area, % 68
22
Shear Modulus, GPa 52
51
Shear Strength, MPa 470
550 to 790
Tensile Strength: Ultimate (UTS), MPa 770
890 to 1340
Tensile Strength: Yield (Proof), MPa 550
870 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 320
310
Melting Completion (Liquidus), °C 1760
1740
Melting Onset (Solidus), °C 1700
1690
Specific Heat Capacity, J/kg-K 500
500
Thermal Expansion, µm/m-K 8.4
7.1

Otherwise Unclassified Properties

Base Metal Price, % relative 48
60
Density, g/cm3 5.4
5.4
Embodied Carbon, kg CO2/kg material 31
32
Embodied Energy, MJ/kg 480
490
Embodied Water, L/kg 150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
110 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
2760 to 5010
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 32
32
Strength to Weight: Axial, points 40
46 to 69
Strength to Weight: Bending, points 35
38 to 50
Thermal Shock Resistance, points 48
66 to 100

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.5
Carbon (C), % 0 to 0.1
0 to 0.050
Hydrogen (H), % 0 to 0.015
0 to 0.015
Iron (Fe), % 0 to 0.1
0 to 0.4
Molybdenum (Mo), % 14 to 16
14 to 16
Niobium (Nb), % 0
2.2 to 3.2
Nitrogen (N), % 0 to 0.050
0 to 0.030
Oxygen (O), % 0 to 0.2
0 to 0.17
Silicon (Si), % 0
0.15 to 0.25
Titanium (Ti), % 83.5 to 86
76 to 81.2
Residuals, % 0
0 to 0.4