Titanium Grade 5 (Ti-6Al-4V) is the most widely used titanium alloy, accounting for more than 50% of all titanium usage worldwide. Its exceptional strength-to-weight ratio (stronger than most structural steels at less than half the weight), complete immunity to corrosion in seawater and body fluids, and biocompatibility with human tissue make it irreplaceable in aerospace structures, orthopaedic implants, marine hardware, and high-performance motorsport. Machining titanium is genuinely difficult — it generates extreme cutting heat, work-hardens at the surface, and wears tooling aggressively. OrangeSea CNC machines titanium every day with proven programmes, PCD and carbide tooling specifically selected for Ti-6Al-4V, and high-pressure through-coolant to manage heat.
Technical Data
Material Properties
Capabilities
Why CNC Machine Ti Gr5?
Unmatched Strength-to-Weight
950 MPa tensile at 4.43 g/cm³ — stronger than 316L stainless at 56% of the weight. No other common metal comes close.
Corrosion Proof
Ti-6Al-4V is completely immune to seawater, body fluids, most acids, and oxidising environments. No surface treatment required for most applications.
Biocompatible
ASTM F136 ELI (Extra Low Interstitial) grade available for implant applications. Osseointegrates with bone tissue — the orthopaedic implant standard.
Non-Magnetic
Fully non-magnetic at all temperatures — essential for MRI-compatible devices, certain aerospace instruments, and some defence applications.
Low Thermal Expansion
Thermal expansion coefficient (8.6 µm/m·°C) between aluminium and steel — stable dimensions across temperature cycling in aerospace structures.
Proven Programmes at OrangeSea
We machine titanium daily with documented feeds, speeds, tooling grades, and coolant pressure. No learning curve, no tool breakage surprises — predictable first-time quality.
Use Cases
What We Machine in Ti Gr5
Engineering Tips
Design for Machining — Ti Gr5
Specify ELI (Extra Low Interstitial) grade (ASTM F136) for medical implant applications — standard Grade 5 is NOT implant-approved
Ti-6Al-4V generates extreme heat — do not dry-machine. Our programmes use high-pressure through-coolant and flood coolant as standard
Avoid thin walls below 1.0 mm where possible — titanium's low thermal conductivity causes deflection during cutting
Surface finish matters more than for steel — the oxide layer that reforms after machining is thin and the base metal is prone to fretting. Specify Ra requirements explicitly
Allow for 2–3× the cost of equivalent stainless 316L — material cost, tooling consumption, and slower speeds all contribute
Surface Options
Available Finishes
Related Materials
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Ready to Machine in Ti Gr5?
Upload your design files and get a detailed quote within 24 hours. Tolerances to ±0.01 mm, ships worldwide from Shenzhen.