Grade 4 Titanium Coil

Grade 4 Titanium Coil is a high-strength, commercially pure titanium (>99%) product designed for demanding structural and biomedical applications. It offers the highest strength among CP titanium grades while maintaining good corrosion resistance, especially in chloride environments. The coiled form enhances its flexibility in continuous processing applications like tube fabrication, heat exchanger linings, and implant device production. Used across aerospace, medical, and marine sectors, it finds specific roles in orthopedic load-bearing implants, rotary blood pumps, and high-pressure tubing. Research highlights its suitability for severe plastic deformation processes (e.g., Conform SPD), which significantly enhance strength while allowing ductility tuning via post-treatment annealing. Surface modification techniques such as TiO₂ layer deposition improve hemocompatibility, making it ideal for blood-contact devices. Its biocompatibility, combined with high tensile performance and microstructural integrity, makes Grade 4 Titanium Coil a cornerstone material for innovative structural and biomedical engineering.

Quick Links:

Tolerance

Properties

Reference & Citations

each

Tolerances

Coil

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