Grade 5 Titanium Piston with Precision Machining

Product Introduction 

Grade 5 Titanium Piston with Precision Machining delivers the ideal combination of light weight, high strength, and dimensional accuracy for demanding mechanical systems. The alloy (Ti-6Al-4V) has a density of 4.43 g/cm3, making it roughly 45% lighter than steel, with an ultimate tensile strength of 895-1000 MPa. We manufacture these pistons in Baoji Huacan using 40+ Advanced CNC machines, with tolerances of ±0.01 mm and surface roughness of Ra ≤0.2 μm. All parts are made as per your designs. Full OEM/ODM support.

Product Specification & OEM Customization

Parameter	Value / Specification
Material	Ti-6Al-4V (Grade 5)
Material Standards	ASTM B348 / AMS 4928, as applicable to the raw material form and requirements
Mechanical Properties	Ultimate Tensile Strength: ≥895 MPa; Yield Strength: ≥828 MPa; Elongation: ≥10%
Dimensions	Custom outer diameter, length, bore, grooves, and thread configurations; typical OD range: 20–120 mm
Machining Tolerance	Up to ±0.01 mm for selected features, subject to part geometry and drawing requirements
Surface Finish	CNC-machined or polished; surface roughness available down to Ra 0.2 μm for suitable surfaces
Manufacturing & Customization	CNC turning, milling, and thread machining; drawing-based production, prototype samples, and custom specifications available

Product Material Advantages

Product Application

High-Performance Motorsports Used in Formula 1, MotoGP and drag racing engines. Precision cam ground skirt profiles enable operation at 15,000+ RPM without piston slap or seizure.

Aerospace Hydraulic Actuators: These are used in flight control systems where seal grooves need Ra ≤0.2 μm surface finishes to prevent fluid leakage at operating pressures of 3,000-5,000 PSI.

Deep-sea submersible pumps: Used in offshore oil, gas and research submersibles working at depths in excess of 3,000 m. Resistance to chloride corrosion and volumetric efficiency are important.

Industrial Pneumatic and Hydraulic Systems: The material investment cost of Grade 5 Titanium Piston with Precision Machining is justified by lower reciprocating mass, chemical resistance and extended service life.

Why Choose Us

Titanium Pistons Are Not Just”Lighter Pistons”They tackle actual technical difficulties that aluminum and steel can't solve.

Ti-6Al-4V’s reduced reciprocating mass decreases engine inertia, and allows for the prospect of a higher RPM and quicker reaction. The alloy’s fatigue resistance can endure millions of high stress cycles without failing. Its corrosion resistance makes it appropriate for use with hydraulic fluids, in maritime situations and hostile media .

This is where precision machining comes in. Titanium has a unique thermal expansion. Each piston needs carefully designed skirt profiles, frequently noncircular, which expand to a perfect circle at operating temperature to avoid seizure or blow-by.

With more than ten years of titanium machining expertise and yearly output in excess of 1,000 tons, Baoji Huacan provides parts to your precise requirements, every time.

Manufacturing Process

Every piston begins with certified Ti-6Al-4V bar stock, verified through chemical composition analysis and material certification before entering production.

Forging or precision die forging is applied where structural integrity demands it. This refines the grain structure and improves mechanical properties before any machining begins.

CNC turning and 5-axis milling then shape the component to your exact drawings. Complex skirt geometries, ring groove profiles, pin bore alignment, and sealing surfaces are all machined with tight tolerance control. Deburring and surface finishing complete the process before inspection.

Receiving Drawings

Annealing

Developing Machining Process

Finish Machining

Preparing Raw Materials

Deburring

Rough Machining

Deburring

Quality Control

Baoji Huacan applies a multi-stage inspection protocol to every titanium piston:

• Raw material verification — spectrometer-based chemical analysis and supplier certification review
• In-process dimensional checks — real-time monitoring through forging and machining stages
• CMM inspection — coordinate measuring machines verify skirt profiles, pin bore alignment, and ring groove flatness to <0.01 mm
• Surface profilometry — Ra and Rz values measured on skirts and ring lands
• Fluorescent Dye Penetrant Inspection (FPI) — detects micro-cracks or porosity from forging or machining
• Coating validation — adhesion and thickness checks for DLC and MoS₂ coatings (typically 2–4 microns)
• Final documentation — inspection reports, material certificates, and traceability records provided with each shipment

Certifications

Baoji Huacan's manufacturing plant is ISO 9001 quality management system certified and covers raw material selection, in-process control, and final inspection. All material standards are per ASTM B348, AMS 4928, and appropriate DIN specs.

Contact Us

Ready to source precision-machined titanium pistons like Grade 5 Titanium Piston with Precision Machining built to your exact specifications? Contact our team at Joy@hc-titanium.com  now.