Grade and Standard
1) Common grades of titanium screws include:

Pure titanium: GR1 (TA1), GR2 (TA2) - Good corrosion resistance, moderate strength.

Titanium alloy: GR5 (TC4, Ti-6Al-4V) - High strength, high temperature resistance, commonly used in the aviation field.

Other alloys: such as Ti-6Al-4V ELI (medical grade), Ti-3Al-2.5V (high plasticity).

2) Execution standards:

National standards (GB/T): GB/T 13810 (Titanium and titanium alloy processed materials), GB/T 2670 (Titanium screw standards).

American Standard (ASTM): ASTM F136 (Medical Titanium Alloy), ASTM B348 (Titanium Bars).

International standards: ISO 5832-3 (Titanium for surgical implants), DIN 17851 (German standard for titanium fasteners).

(2) Features
1) Light and strong: Its density is only 60% of that of steel, and its strength is close to that of alloy steel.

2) Corrosion resistance: Resistant to seawater, acids, alkalis and chlorides, suitable for chemical and marine environments.

3) Biocompatibility: Medical titanium (such as GR5 ELI) is non-toxic and non-magnetic, making it suitable for human implantation.

4) Resistance to high and low temperatures: Wide operating temperature range (-250℃ to 600℃).

(3) Main Uses
1) Aerospace: Aircraft structural components, engine fasteners.

2) Medical field: orthopedic screws, dental implants.

3) Chemical industry / Marine: Corrosion-resistant pipe flanges, deep-sea equipment.

4) High-end manufacturing: lightweighting demand scenarios such as racing cars and precision instruments.