Stainless, nickel-plated, stainless steel – what's the difference?

“Rustproof”, “stainless steel”, “nickel-plated”, “INOX” – nail instruments carry a lot of labels, and the terms often get mixed up. Yet they decide durability, sharpness and even skin tolerance.

Here is the plain-language version.

Stainless steel (INOX)

The standard for high-quality nail instruments. The decisive factor is the chromium content: from around 10.5 per cent, an invisible passive layer forms on the surface. It protects the steel from corrosion and renews itself.

“INOX”, by the way, is simply the French word for stainless – not a higher standard, just the same thing.

Important: not all stainless steel is alike. There are dozens of alloys with very different properties. With scissors and nippers, the decisive question is whether the steel can be hardened.

Why hardness makes the difference

A blade has to be hard, otherwise it gives way while cutting and goes blunt quickly. Only certain grades of steel can be hardened – and the hardness comes from the carbon content.

That is the conflict the whole industry lives with: more carbon means more hardness and more sharpness, but less corrosion resistance. Good instrument steels are the balanced compromise between the two – and that balance is the real know-how of a manufacturer.

A soft, highly corrosion-resistant steel makes scissors that never rust and never really cut. Getting both at once is the art.

Nickel-plated – what that means

Nickel-plated instruments are not made of stainless steel. They have a body of simpler metal with a thin layer of nickel applied to it. That layer provides shine and a certain amount of protection.

This has consequences:

• The layer is finite. Once it is worn through or scratched, the metal underneath corrodes.
• Not resharpenable. Sharpening removes the coating.
• Nickel allergy. Nickel is one of the most common contact allergens of all. With prolonged skin contact this can matter.

Nickel plating is therefore typical for instruments without a blade – tweezers, pushers, simple case sets – and for budget goods.

Carbon steel

Not stainless, but extremely hard and very sharp. That is why scalpel blades are often made of carbon steel – they are sterile single-use products, so corrosion is irrelevant.

For instruments used again and again it is unsuitable.

The short version

• Hardened stainless steel – the right choice for nail scissors, cuticle scissors and nippers. Durable, hygienic, resharpenable.
• Nickel-plated – cheaper, good-looking, limited service life, relevant for allergies.
• Carbon steel – only makes sense for disposable blades.

How to spot good quality

• A screw joint instead of a rivet – adjustable and resharpenable
• Cleanly finished edges – no burrs, no rough spots
• A stamped maker's mark
• A clear material specification – anyone who writes only “steel” or “metal” usually has a reason
• Stated origin – the name Solingen is protected by law

Conclusion

For anything that cuts, there is no way around hardened stainless steel. Nickel-plated goods are not bad goods – but they are a different product class, and the price difference has a factual reason.

At nagelzange.de:

• Nail scissors in stainless steel
• Cuticle scissors and cuticle nippers
• Nail nippers
• Scalpels and blades

Read also: Made in Solingen – what the name means in law and Rust spots on instruments.