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Solution-Treated and Aged (High Strength) Grade 21 Titanium

Titanium Alloys

OverviewChemical CompositionMechanical PropertiesPhysical PropertiesOther Properties

Property Overview

Density5.4g/cm³
Elastic Modulus140GPa
Tensile Strength1340MPa
Yield Strength1170MPa
Brinell HardnessUnknown
Maximum Service Temperature310°C
Weight Calculator

Chemical Composition

C
0 to 0.050%
MO
14 to 16%
SI
0.15 to 0.25%
N
0 to 0.030%
NB
2.2 to 3.2%
TI
76 to 81.2%
AL
2.5 to 3.5%
H
0 to 0.015%
O
0 to 0.17%
RES.
Residuals res. | | 0 to 0.4%
RESIDUALS RES.
0 to 0.4%
FE
0 to 0.4%

Mechanical

Elastic (Young's, Tensile) Modulus
140 GPa
Elongation at Break
9.0 %
Fatigue Strength
660 MPa
Poisson's Ratio
0.32
Reduction in Area
22 %
Shear Modulus
51 GPa
Shear Strength
790 MPa
Tensile Strength: Ultimate (UTS)
1340 MPa
Tensile Strength: Yield (Proof)
1170 MPa

Physical

Density
5.4 g/cm 3

Thermal

Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
310 °C
Melting Completion (Liquidus)
1740 °C
Melting Onset (Solidus)
1690 °C
Specific Heat Capacity
500 J/kg-K
Thermal Conductivity
7.5 W/m-K
Thermal Diffusivity
2.8 mm 2 /s
Thermal Expansion
7.1 µm/m-K
Thermal Shock Resistance
100 points

Calculated

Resilience: Ultimate (Unit Rupture Work)
110 MJ/m 3
Resilience: Unit (Modulus of Resilience)
5010 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
32 points
Strength to Weight: Axial
69 points
Strength to Weight: Bending
50 points

Environmental

Base Metal Price
60 % relative
Embodied Carbon
32 kg CO 2 /kg material
Embodied Energy
490 MJ/kg
Embodied Energy
490 MJ/kg 210 x 10 3 BTU/lb
Embodied Water
180 L/kg
Embodied Water
180 L/kg 21 gal/lb
Registered Designations & Aliases
High StrengthSolution-Treated and Aged (High Strength) Grade 21 Titanium
Standards

ASTM B265 ASTM B265: Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate

ASTM B348 ASTM B348: Standard Specification for Titanium and Titanium Alloy Bars and Billets

ASTM B381 ASTM B381: Standard Specification for Titanium and Titanium Alloy Forgings

ASTM B861 ASTM B861: Standard Specification for Titanium and Titanium Alloy Seamless Pipe

ASTM B861 ASTM B861: Standard Specification for Titanium and Titanium Alloy Seamless Pipe ASTM B381: Standard Specification for Titanium and Titanium Alloy Forgings ASTM B265: Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate ASTM B348: Standard Specification for Titanium and Titanium Alloy Bars and Billets Titanium and Titanium Alloys: Fundamentals and Applications, Christoph Leyens and Manfred Peters (editors), 2003 Titanium, 2nd ed., G. Lutjering and J. C. Williams, 2007 Aerospace Materials, Brian Cantor et al. (editors), 2001