Grade 4 Titanium Foil

Grade 4 Titanium Foil is the strongest grade of commercially pure titanium, offering exceptional strength-to-weight ratio, excellent corrosion resistance, and high biocompatibility. This foil grade combines moderate formability with mechanical robustness, making it suitable for mission-critical applications in aerospace, chemical processing, and biomedical devices. It is widely used in load-bearing implants, high-pressure chemical reactors, and radiation shielding in nuclear environments. Advanced manufacturing methods, such as severe plastic deformation followed by heat treatment, can tailor its microstructure for enhanced yield strength while maintaining ductility—making it invaluable in both bulk and microscale applications. Its electrochemical stability and surface modifiability also support functional coatings for drug delivery or enhanced blood compatibility. Grade 4 Titanium Foil is vital for research where durability, corrosion resistance, and compatibility with living tissue or harsh media are non-negotiable.

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Tolerance

Properties

Reference & Citations

each

Tolerances

Foil

Thickness	<0.01mm	±25%
Thickness	0.01mm - 0.05mm	±15%
Thickness	>0.05mm	±10%

Material Properties for Metals

Atomic Properties

Element	Value
Atomic number	22
Crystal structure	Hexagonal close packed
Electronic structure	Ar 3d² 4s²
Valences shown	2,3,4
Atomic weight( amu )	47.88
Thermal neutron absorption cross-section( Barns )	6.1
Photo-electric work function( eV )	4.1
Natural isotope distribution( Mass No./% )	50/ 5.3
Natural isotope distribution( Mass No./% )	49/ 5.5
Natural isotope distribution( Mass No./% )	46/ 8.0
Natural isotope distribution( Mass No./% )	48/ 73.7
Natural isotope distribution( Mass No./% )	47/ 7.5
Atomic radius - Goldschmidt( nm )	0.147
Ionisation potential( No./eV )	3/ 27.5
Ionisation potential( No./eV )	4/ 43.3
Ionisation potential( No./eV )	5/ 99.2
Ionisation potential( No./eV )	1/ 6.82
Ionisation potential( No./eV )	2/ 13.6
Ionisation potential( No./eV )	6/ 119

Mechanical Properties

Element	Value
Material condition	Polycrystalline
Material condition	Annealed
Poisson's ratio	0.361
Poisson's ratio	0.361
Poisson's ratio	-
Bulk modulus( GPa )	108.4
Bulk modulus( GPa )	-
Bulk modulus( GPa )	108.4
Tensile modulus( GPa )	-
Tensile modulus( GPa )	120.2
Tensile modulus( GPa )	120.2
Izod toughness( J m⁻¹ )	61
Izod toughness( J m⁻¹ )	61
Hardness - Vickers( kgf mm⁻² )	60
Hardness - Vickers( kgf mm⁻² )	60
Tensile strength( MPa )	230-460
Tensile strength( MPa )	230-460
Yield strength( MPa )	140-250
Yield strength( MPa )	140-250

Electrical Properties

Element	Value
Electrical resistivity( µOhmcm )	54@20@20°C
Superconductivity critical temperature( K )	0.4
Temperature coefficient( K⁻¹ )	0.0038@0-100°C

Physical Properties

Element	Value
Boiling point( C )	3287
Density( gcm⁻³ )	4.5@20°C

Thermal Properties

Element	Value
Melting point( C )	1660
Latent heat of evaporation( J g⁻¹ )	8893
Latent heat of fusion( J g⁻¹ )	365
Specific heat( J K⁻¹ kg⁻¹ )	523@25°C
Thermal conductivity( W m⁻¹ K⁻¹ )	21.9@0-100°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	8.9@0-100°C