Ti-6Al-4V Investment Casting: Properties, Specs & Uses
TL;DR: Ti-6Al-4V investment casting produces lightweight, high-strength titanium parts for aerospace. This guide covers titanium alloy casting aerospace uses, grade 5 titanium casting properties, and titanium casting vs forging.
Ti-6Al-4V investment casting is the leading way to make lightweight, high-strength titanium components for aircraft and spacecraft. At Uni Tritech, India’s NADCAP-certified aerospace foundry, we vacuum-cast Ti-6Al-4V to net shape and HIP every part for full integrity.
This guide explains Ti-6Al-4V investment casting properties, why titanium alloy casting aerospace programmes rely on it, and how it compares with forging. For more, see our investment casting process page and the Ti-6Al-4V reference.
What Is Ti-6Al-4V Investment Casting?
Ti-6Al-4V investment casting forms complex titanium parts using the lost-wax process under vacuum. Because titanium is highly reactive, Ti-6Al-4V investment casting needs special yttria or zirconia face coats to prevent alpha-case contamination of the surface.
This guide explains Ti-6Al-4V investment casting: the materials, process, tolerances and quality controls that matter. Uni Tritech is India's Airbus-approved, NADCAP-certified foundry serving aerospace, defence and medical OEMs globally.
Titanium Alloy Casting Aerospace Applications
Titanium alloy casting aerospace demand is driven by the metal’s strength-to-weight ratio. Ti-6Al-4V is roughly 40% lighter than steel at similar strength. Titanium alloy casting aerospace parts include brackets, gimbals, housings, and structural fittings.
Common Ti-6Al-4V aerospace castings:
- Structural brackets and airframe fittings for weight saving.
- Engine and gearbox housings needing heat and corrosion resistance.
- Gimbals and actuator bodies for satellites and launch vehicles.
- Medical implants and surgical components needing biocompatibility.
- Near-net-shape parts that cut titanium machining waste and cost.
Grade 5 Titanium Casting Properties
Grade 5 titanium casting refers to Ti-6Al-4V, an alpha-beta alloy of titanium with 6% aluminium and 4% vanadium. Grade 5 titanium casting combines high strength, low density, and excellent corrosion resistance for demanding service.
Key grade 5 titanium casting properties:
- Tensile strength around 900 MPa after HIP and heat treatment.
- Low density of 4.43 g/cc for outstanding strength-to-weight.
- Excellent corrosion resistance in seawater and chemicals.
- Biocompatible, so suited to medical and surgical castings.
- HIP closes porosity and lifts fatigue life for flight parts.
Titanium Casting vs Forging: Which Is Better?
In titanium casting vs forging, casting wins on complex, near-net-shape geometry and lower tooling cost, while forging gives the highest fatigue strength. For most brackets and housings, titanium casting vs forging favours HIP-treated castings.
- Choose casting for complex shapes and faster, cheaper tooling.
- Choose forging for the highest fatigue and fracture toughness.
- HIP-treated Ti-6Al-4V castings approach wrought properties.
- Casting reduces buy-to-fly ratio and costly titanium scrap.
Why Choose Uni Tritech for Ti-6Al-4V Investment Casting
Uni Tritech is NADCAP-certified and AS9100D approved by Airbus and Collins Aerospace. We pair Ti-6Al-4V investment casting with in-house CNC machining and full non-destructive testing, and also cast Inconel 718 superalloys.
- Vacuum melting and casting for clean, reactive titanium alloys.
- In-house HIP and heat treatment for full mechanical properties.
- NADCAP NDT plus AS9102 first-article inspection with CMM data.
- One-stop titanium casting, machining, and finishing in India.
Frequently Asked Questions
Ti-6Al-4V investment casting is done under vacuum using lost-wax patterns and ceramic shells with inert face coats. Parts are then HIP-treated and heat-treated to close porosity and meet aerospace properties.
Most aerospace brackets are better cast. Titanium casting vs forging favours casting for complex shapes and lower cost, and HIP-treated castings reach the strength most brackets require.
Grade 5 titanium casting is Ti-6Al-4V, an alpha-beta alloy with 6% aluminium and 4% vanadium. It is the most widely cast titanium alloy for aerospace and medical parts.
HIP closes internal porosity in Ti-6Al-4V investment casting, raising fatigue life and density so the parts meet flight-critical aerospace acceptance standards.
Yes. Uni Tritech supplies NADCAP-certified Ti-6Al-4V investment casting to aerospace, defence, space, and medical OEMs globally, with full traceability and documentation.
Need Ti-6Al-4V investment casting for lightweight aerospace or medical parts? Uni Tritech delivers NADCAP-certified, HIP-treated titanium castings with full traceability. Contact our team today.
Looking for a trusted Ti-6Al-4V investment casting manufacturer in India?
Uni Tritech casts lightweight, high-strength titanium components for aerospace, defence, space, and medical. Talk to us about your Ti-6Al-4V castings today.
