Titanium Grade 4, Annealed

Subcategory: Metal; Nonferrous Metal; Titanium Alloy; Unalloyed/Modified Titanium

Close Analogs: Titanium Grades 1,2,3,4,7,11,and 12 are all considered unalloyed and have similar mechanical properties.

Key Words: ASTM Grade 4: UNS R50700, CP titanium, C.P. titanium alloy

Component   Wt. %
CMax 0.1 
FeMax 0.5 
HMax 0.015 
N Max 0.05 
OMax 0.4 

Material Notes:
Information provided by Allvac and the references.

Applications: Airframe components, cryogenic vessels, heat exchangers, CPI equipment, condenser tubing, pickling baskets. Sample was annealed 2 hr at 700C.

Physical PropertiesMetricEnglishComments
Density4.51 g/cc0.163 lb/in 

Mechanical Properties
Hardness, Brinell265265 
Hardness, Knoop296296 Estimated from Brinell.
Hardness, Rockwell B104104 
Hardness, Rockwell C2323 Estimated from Brinell.
Hardness, Vickers280280 Estimated from Brinell.
Tensile Strength, Ultimate660 MPa95700 psi 
Tensile Strength, Yield590 MPa85600 psi 
Elongation at Break20 %20 % 
Modulus of Elasticity105 GPa15200 ksi Unspecified heat treatment in tension
Compressive Modulus110 GPa16000 ksi unspecified heat treatment
Notched Tensile Strength900 MPa131000 psi Kt (stress concentration factor) = 3.0
Poisson's Ratio0.340.34 
Shear Modulus39 GPa5660 ksi 

Electrical Properties
Electrical Resistivity6e-005 ohm-cm6e-005 ohm-cm 

Thermal Properties
Heat of Fusion325 J/g140 BTU/lb High Purity Ti.
CTE, linear 20C8.6 m/m-C4.78 in/in-F 20-93C
CTE, linear 250C9.2 m/m-C5.11 in/in-F Unspecified heat treatment. Average over the range 0-315C
Specific Heat Capacity0.54 J/g-C0.129 BTU/lb-F 
Thermal Conductivity16.9 W/m-K117 BTU-in/hr-ft-F 
Melting PointMax 1660 CMax 3020 F Liquidus
Liquidus1660 C3020 F 
Beta Transus950 C1740 F 

Optical Properties
Emissivity (0-1)0.30.3 High purity Ti at 710C
Reflection Coefficient, Visible (0-1)0.560.56 High purity Ti; visible light.

References for this datasheet.

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