---
title: "Ti-6Al-4V titanium alloy — density, melting point and properti"
description: "Ti-6Al-4V titanium alloy has a density of 4,430 kg/m³. Melting point, strength, conductivity, what it is used for, and whether it floats, rusts or is magnetic."
url: https://atoneplace.net/material/ti-6al-4v/
site: "At One Place"
---

# Ti-6Al-4V titanium alloy

**Density of Ti-6Al-4V titanium alloy: 4,430 kg/m³**

4.43 g/cm³ · 276.6 lb/ft³

Known as grade 5, and about half of all titanium produced is this one alloy. At 900-1100 MPa it matches a quenched and tempered alloy steel at 56% of the weight, which is the trade every aerospace part is making. Its thermal conductivity of 6.7 W/(m·K) is a seventh of steel's, so machining heat has nowhere to go but the cutting edge — this is why titanium is expensive to machine and why the advice is always slow speed, heavy feed and flood coolant.

## Properties

- **Density:** 4,430 kg/m³ — 4.43 g/cm³
- **Melting range:** 1604–1660 °C
- **Tensile strength:** 900–1100 MPa
- **Young's modulus:** 114 GPa
- **Thermal conductivity:** 6.7 W/(m·K)
- **Thermal expansion:** 8.6 µm/(m·K)
- **Floats in water:** No
- **Magnetic:** No

## What it is used for

- Jet engine fan blades and compressor discs
- Airframe fasteners and landing gear parts
- Hip stems and spinal implants
- Motorsport connecting rods and valves

## How it compares

*Water is 1,000 kg/m³. Anything with a shorter bar than water floats in it.*

- air: 1.2 kg/m³
- expanded polystyrene foam: 20 kg/m³
- rigid polyurethane foam: 40 kg/m³
- Water — the float line: 1,000 kg/m³
- Ti-6Al-4V titanium alloy: 4,430 kg/m³
- tungsten: 19,250 kg/m³
- gold: 19,300 kg/m³
- platinum: 21,450 kg/m³

*Water is 1,000 kg/m³. Anything below that floats.*

| Material | Density | Relative to water |
| --- | --- | --- |
| rigid polyurethane foam | 40 kg/m³ | 0.04× |
| expanded polystyrene foam | 20 kg/m³ | 0.02× |
| air | 1.2 kg/m³ | 0.00× |
| Ti-6Al-4V titanium alloy ← | 4,430 kg/m³ | 4.43× |
| platinum | 21,450 kg/m³ | 21.45× |
| gold | 19,300 kg/m³ | 19.30× |
| tungsten | 19,250 kg/m³ | 19.25× |

## Does it rust?

Ti-6Al-4V titanium alloy does not rust — rust is iron oxide specifically — but it does corrode, forming its own oxide or salts over time.

## Is it magnetic?

Ti-6Al-4V titanium alloy is not ferromagnetic. Most metals are not.

## Common questions

### What is the density of Ti-6Al-4V titanium alloy?

4,430 kg/m³, or 4.43 g/cm³.

### Does Ti-6Al-4V titanium alloy float?

No. At 4,430 kg/m³ it is denser than water.

### Is Ti-6Al-4V titanium alloy magnetic?

Ti-6Al-4V titanium alloy is not ferromagnetic. Most metals are not.

## Related pages

- [Does Ti-6Al-4V titanium alloy float?](https://atoneplace.net/does-it-float/ti-6al-4v/)
- [Mild steel](https://atoneplace.net/material/mild-steel/)
- [Stainless steel 304](https://atoneplace.net/material/stainless-304/)
- [Brass](https://atoneplace.net/material/brass/)
- [Gray cast iron](https://atoneplace.net/material/cast-iron/)
- [High-carbon steel](https://atoneplace.net/material/carbon-steel/)
- [Stainless steel 316](https://atoneplace.net/material/stainless-316/)
- [Aluminum 6061](https://atoneplace.net/material/aluminum-6061/)
- [Bronze](https://atoneplace.net/material/bronze/)

## Sources

- Typical range compiled from manufacturer specifications — At One Place (/about/)