CNC Machining Titanium Fasteners

In fields with stringent material performance requirements, such as aerospace, medical devices, high-end automobiles, and marine engineering, titanium fasteners have become a key alternative to traditional steel and aluminum alloy fasteners due to their low density (only 60% of steel), high strength (tensile strength exceeding 1000 MPa), excellent corrosion resistance (with a service life far exceeding stainless steel in seawater and strong acid environments), and excellent biocompatibility.

Wstitanium, a company specializing in the manufacture of precision titanium and titanium alloy components, has been deeply engaged in CNC machining for over a decade. Leveraging its deep understanding of titanium material properties, customized machining processes, and comprehensive quality control, it has become a core supplier to numerous global aerospace and medical device manufacturers.

Titanium Fastener Specifications

Wstitanium Internal Investment

Quality Control

Wstitanium strictly adheres to ISO 9001 standards for quality control to ensure that our titanium fasteners meet high quality standards. Wstitanium is constantly striving to improve quality and is dedicated to meeting your demanding needs. We believe that quality control is the key to our success.

1. Basic Material Testing

Composition Analysis: Spectroscopic analysis (e.g., direct-emission spectrometer) is used to confirm the titanium alloy grade (e.g., TC4, TA2) to ensure that the Ti content and alloying elements (e.g., Al, V) comply with ASTM B348 or GB/T 2965 standards to avoid impurities that may affect corrosion resistance.
Microstructural Examination: A metallographic microscope is used to observe grain size and structural uniformity to prevent structural defects (e.g., Widmanstätten structure) caused by improper heat treatment, which could affect mechanical stability.

2. Mechanical Property Testing

Tensile strength, yield strength, and elongation are tested to meet the corresponding grade requirements (e.g., TC4 tensile strength ≥860 MPa) in accordance with ASTM F1106 or GB/T 30767. Surface hardness is tested using a Vickers hardness tester (HV) to avoid excessive hardness that increases brittleness or insufficient hardness that affects wear resistance. For high-intensity applications such as aviation and medical applications, fatigue life is tested using simulated alternating loads to ensure long-term fracture resistance.

3. Dimensional Inspection

Use calipers, micrometers, or a three-dimensional coordinate measuring machine to inspect thread accuracy (e.g., pitch, pitch diameter), length, and diameter in accordance with ISO 898-1 or GB/T 3098.1 standards. Visually or microscopically inspect to ensure the absence of defects such as cracks, scratches, and scale. Test coating thickness, adhesion, and corrosion resistance (neutral salt spray test) to prevent coating loss and rust during use.

4. Special Performance Testing (Optional)

Corrosion testing in specific environments (e.g., acidic or marine environments) is performed to evaluate the corrosion resistance of titanium alloys. This is particularly applicable to the chemical and shipbuilding industries.

Ultrasonic Testing (UT): Detects internal cracks, inclusions, and other defects.

Penetrant Testing (PT): Detects surface-opening defects and is suitable for complex structural areas such as threads and chamfers.

5. Core Testing Standards Reference

ASTM B348 (Titanium and Titanium Alloy Bars), ASTM F1106 (Mechanical Properties of Titanium Alloy Fasteners), and ISO 5832-2 (Titanium Alloys for Surgical Implants).

Through these systematic tests, we ensure that titanium fasteners meet application requirements in terms of strength, corrosion resistance, and stability. This is particularly true for critical applications such as aerospace, medical devices, and high-end equipment. Test results must be accompanied by reports issued by authoritative organizations.