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Metals · Ti

Titanium

Updated October 16, 2026

Titanium is a light, strong grey metal: about half the weight of steel for the same size, and it does not rust or tarnish. Implant-grade titanium (ASTM F136, often called G23) is what surgeons use for joint replacements and what piercers use for new piercings, which makes it the safest choice for sensitive skin. Titanium rings are cheap and comfortable, but hard to resize, so buy your exact size.

Element
Ti, atomic number 22
Density
4.5 g/cm³: about half the weight of steel
Implant grade
ASTM F136 (G23): titanium with 6% aluminium, 4% vanadium
Named after
The Titans of Greek myth (by Klaproth, 1795)

Why it suits sensitive skin

Titanium covers itself in a thin, stable oxide film that keeps metal ions from reaching the skin, and implant-grade titanium contains no nickel. That is why new piercings are done with F136 titanium and why it is the first choice for anyone who reacts to cheap earrings.

Colours without paint

Titanium can be anodised: an electric current grows a thicker oxide layer, and the thickness of that layer makes it look blue, purple, gold or green, the same way a film of oil on water shows colours. No dye or plating is involved.

The trade-offs

Titanium is greyer and duller than silver or platinum, it scratches more easily than steel, and rings are hard to resize. In an emergency a titanium ring can be cut off with the right cutter.

The titanium atom

A simplified picture: real electrons are fuzzy clouds, not dots on rings, but the count in each shell is real. The cube shows how the atoms stack in the solid metal.

Ti
TitaniumTiAtomic number22Atomic mass47.867Electrons per shell2 · 8 · 10 · 2CrystalHexagonal close-packedLayers of atoms in a honeycomb pattern, each layer nested in the hollows of the one below.Titanium is about as strong as many steels at roughly 45% less weight.

Electron shells from each element's ground-state configuration; crystal structures at room temperature. Source: electron configurations of the elements and crystal structures of the elements.

Titanium vs stainless steel

TitaniumStainless steel (316L)
WeightAbout 4.5 g/cm³: very lightAbout 8 g/cm³: nearly twice as heavy
ColourDarker, warmer greyBrighter, closer to silver
ScratchesPure titanium scratches more easilyHarder wearing, keeps a polish longer
Sensitive skinImplant grade (F136) has no nickel: the safest choiceContains nickel locked into the alloy; fine for most people
PriceMore: chains often $50 to $100Less: chains often $10 to $30
Rust and tarnishNeverNever
ResizingHardHard
Best forAllergies, new piercings, all-day comfortValue, shine, chains you swim and shower in

Real titanium pieces on Amazon

Each listing's own metal details were read on October 16, 2026 and match the title; we show its star rating, and leave out anything under 4 stars. Prices change, so the link goes to the live listing.

Chains and bracelets

Solid titanium, listed as pure or solid titanium.

Rings, earrings and a bar

From a $13 band to implant-grade earrings for brand-new piercings.

Frequently Asked Questions

Is titanium jewelry hypoallergenic?

Implant-grade titanium (ASTM F136 or G23) is about as hypoallergenic as metal gets: it contains no nickel and is used inside the body. Check the listing says implant grade or F136; "titanium steel" is stainless steel, not titanium.

Can a titanium ring be cut off?

Yes. Emergency rooms and jewellers can cut titanium with the right ring cutter. Tungsten carbide, by contrast, has to be cracked off.

Is "titanium steel" titanium?

No. "Titanium steel" on a listing is stainless steel, sometimes with a titanium-coloured coating. Real titanium jewellery says pure titanium, solid titanium, or a grade such as G23 or F136.

Sources