TITANIUM AND TITANIUM ALLOYS
After an extensive research and development programme for the manufacture of titanium bars, together with a high technological level in plant and equipment, Valbruna has achieved a carefully controlled manufacturing process to ensure the highest quality product.

Main properties of Titanium alloys:
  • High Mechanical Strength
  • Good Fatigue Strength
  • Perfect Bio-Compatibility
  • Non-Magnetic
  • Good Heart Transfer
  • Low Thermal Expansion
  • Low Elastic Modulus
  • High Specific Strength
  • High Corrosion / Erosion-Corrosion Resistance

Titanium, because of its physical, chemical and mechanical porperties, is among the most interesting materials for constructing the products of the future. 		  The most versatile Titanium grades can be found in Valbruna's production range:

Ti Gr.2 Combines good tensile strength and cold forming properties.
Ti Gr.4 Is the commercially pure Titanium possessing the highest tensile strength properties.
Ti Gr.5 The most versatile Titanium alloy due to its excellent combination of characteristics. It behaves well in forging and has excellent ductility and toughness in the annealed condition. Because of its low sensibility to notching effects and its excellent resistance to cavitation, Ti Gr.5 is suitable for any mechanical application.
Ti Gr.5 ELI Is the Titanium alloy used in biomedical implants, because of its extra low level of interstital elements obtained through a double-remelting in the VAR furnace.
   



 
GRADE STANDARD

Ti Gr.2
ASTM B348
ASTM F67
ISO 5832-2

Ti Gr.4
ASTM B348
ASTM F67
ISO 5832-2		 Ti Gr.5
ASTM B348
AMS 4928		 Ti Gr.5 ELI
ASTM F136
ISO 5832-3
AMS 4930
Chemical Analysis (%)
N max 0.03 0.05 0.05 0.05
C max 0.10 0.10 0.10 0.08
H max 0.0100 0.0100 0.0100 0.012
Fe max 0.30 0.50 0.40 0.25
O max 0.25 0.4 0.2 0.13
Al - - 5.50 - 6.75 5.50 - 6.75
V - - 3.5 - 4.5 3.5 - 4.5
Other elements 0.5 max 0.5 max 0.5 max -
Ti Remainder Remainder Remainder Remainder
Mechanical Properties (%)
T.S min (N/mm2) 345 550 895 825
Y.S. 0.2%mm (N/mm2) 275 438 828 760
E in 4D min (%) 20 15 10 8
RA min (%) 30 25 25 15
Physical Properties (%)
Atomic weight (-) 22 22 22 22
Specific gravity (-) 47.9 47.9 47.9 47.9
Density (Kg/dm3) 4.5 4.5 4.43 4.43
Melting temperature (¢XC) 1660 - 1670 1660 - 1670 1604 - 1660 1604 - 1660
Coef. of expansion (£gm/m¢XC) 8.3 8.3 9 9
Specific heat (J/Kg¢XC) 544 544 586 586
Thermal conductivity (W/m¢XC) 16.4 16.4 6.6 6.6
Electrical resistivity (£g£[m) 0.5 0.5 1.71 1.71
Magnetic permeabilty (a1.6kAm) 1.00005 1.00005 1.00005 1.00005
Coefficient of elasticity (GPa) 103 103 110 110
Poisson's ratio (-) 0.33 0.33 0.33 0.33
 

 

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