Features

ISO 5832-2 Unalloyed Titanium Bar for Surgical Implant

Chemical Composition (wt.%)

Element	Grade 1 ELI	Grade 1	Grade 2	Grade 3	Grades 4A and 4B
Nitrogen	0.012	0.03	0.03	0.05	0.05
Carbon	0.03	0.1	0.1	0.1	0.1
Hydrogen	0.0125	0.0125	0.0125	0.0125	0.0125
Iron	0.1	0.2	0.3	0.3	0.5
Oxygen	0.1	0.18	0.25	0.35	0.4
Titanium	Balance	Balance	Balance	Balance	Balance

Note: For billets, the maximum hydrogen content shall be 0.010 % (mass fraction) and for flat products for the maximum hydrogen content shall be 0.015 % (mass fraction).

Mechanical Properties

Grade	Condition	Tensile Strength (min. MPa)	Proof Stress of non-proportional elongation (min. MPa)	Percentage Elongation (min. %)	Mandrel Diameter for Bend Test for Sheet and Strip (mm)
1 ELI	Annealed	200	140	30	2 mm ≤ t < 5 mm: 3 t < 2 mm: 4
1	Annealed	240	170	24	2 mm ≤ t < 5 mm: 3 t < 2 mm: 4
2	Annealed	345	275	20	t ≥ 2 mm: 4 t < 2 mm: 5
3	Annealed	450	380	18	t ≥ 2 mm: 4 t < 2 mm: 5
4A	Annealed	550	483	15	t ≥ 2 mm: 5 t < 2 mm: 6
4B	Cold-worked	680	520	10	t ≥ 2 mm: 6 t < 2 mm: 6

Notes:

Tensile, yield, and bending requirements of the sheet shall apply to material taken both parallel and perpendicular to the direction of rolling.
Gauge length = 5.65√So, or 50 mm, where So is the original cross-sectional area, in square millimetres.
Ct = thickness of the sheet or strip.

Technical Specifications

Specification	Value
Standard	ISO 5832-2 Unalloyed Titanium Bar for Surgical Implants
Grade	Grade 1 ELI, Grade 1, Grade 2, Grade 3, Grade 4A, Grade 4B
Type	Alloy Bar, Sheet, Plate, Wire
Dimension	Bar—Round bars and flats from 5.50 to 94.0 mm [0.218 to 3.70 in.] in diameter or thickness （other sizes or shapes by special order）.
	Sheet—Any product 0.188 in. (4.76 mm) and under in thickness and 24 in. (610 mm) or more in width.
	Plate—Any product 5.50 up to 94.0 mm [0.218 to 3.70 in.] in thickness, with a width equal to or greater than five times the thickness.
	Wire—Smaller than 0.218″ (5.5mm) in outer diameter.
Density	4.51g/cm³
Inspection Certificate	EN 10204 Type 3.1 (Mill Test Certificate), EN 10204 Type 3.2 (Witness Testing or 3rd Party Inspection)
Tests	Chemical Composition, Grain Size ISO 643/ASTM E112, Tensile Test ISO 6892-1, 105° Bending Test ISO 7438

Key Features

Excellent Biocompatibility: Unalloyed titanium boasts superior biocompatibility, meaning it is non-toxic and exhibits minimal interaction with surrounding tissues and fluids. This minimizes the risk of adverse reactions and ensures the implant’s long-term success within the body.
Corrosion Resistance: It demonstrates outstanding resistance to corrosion within the body’s physiological environment, preventing degradation and ensuring the implant’s longevity.
Lower Strength Compared to Alloys: While not as strong as titanium alloys like Ti6Al4V or Ti6Al7Nb, unalloyed titanium still offers sufficient strength for many implant applications, particularly those that do not experience high stress or load-bearing conditions.
Good Ductility and Formability: Unalloyed titanium exhibits good ductility and can be readily formed into various shapes and sizes required for different implant designs.
Lower Modulus of Elasticity: Compared to titanium alloys, unalloyed titanium has a lower modulus of elasticity, closer to the stiffness of natural bone. This helps reduce stress shielding and improve load transfer to the surrounding bone.

Packing

Packed in plywood boxes.

Application

Dental implants: These bars, sheets, and strips are frequently used as the base for dental prosthetics like crowns and bridges due to their excellent biocompatibility and osseointegration properties.
Abutments: Connect the implant to the prosthetic
Non-load-bearing or low-stress applications: These are used in situations where high strength is not a primary requirement, such as certain spinal implants, fracture fixation devices, and maxillofacial implants.
Pacemaker components: This material is employed in pacemaker casings and leads due to its biocompatibility and resistance to corrosion from bodily fluids.